Astrophysics Events

  • Monday, April 22, 2019
    Princeton University/Institute for Advanced Study Galread [Galactic/Extragalactic Reading Group]
    “On the Assembly Bias of Cool Core Clusters Traced by Ha Nebulae”

    Location: Princeton University, Peyton Hall, Grand Central
    Time: 11:00 AM
    Speaker(s): Discussion Leader Elinor Medezinski, Princeton University

    Description: Each week, we hold a relatively informal seminar/discussion series in Peyton Hall with an emphasis on extra-galactic and large-scale structure astrophysics. During Galread a leader/visitor presents a recent paper to the discussion group. The PDF of the paper is projected onto a large screen, and a guest explains the paper, section by section, in greater detail than may be explained within the text of the article. To aid with discussion, only the article PDF is presented -- no powerpoint-style slides. Galread discussions are very friendly and interactive. If you would like to present at Galread, please contact Andy Goulding (goulding[at]astro.princeton.edu) or Jenny Greene (jgreene[at]astro.princeton.edu). The group's website is: http://web.astro.princeton.edu/events/seminars/galread. Discussion paper:
    https://arxiv.org/abs/1903.05092

  • Monday, April 22, 2019
    Princeton University/Institute for Advanced Study Planet/Exoplanet Discussion Group
    “Potluck Discussion of Exoplanet Papers”

    Location: Princeton University, Peyton Hall, Room 140
    Time: 12:15 PM

    Description: The Monday Planet Lunch will be held weekly. We discuss recent papers from astro-ph and hear from the occasional exoplanet visitor. Graduate students are particularly encouraged to attend. The format will be informal and inclusive, spanning at a minimum exoplanets, the solar system, and astrobiology. Moreover, we plan on discussing multiple topics each time we meet, and not to tether a lunch to one organized presentation each sitting. The purpose is to foster wide-ranging and cross-fertilizing interaction and to keep the local community up to date on developments across the spectrum of associated activities. Joel Hartman is the organizer.
    https://calendar.google.com/calendar/embed?src=MWw3Y2JhdnBucnZhaWkxbTd2YTdqNDNldmNAZ3JvdXAuY2FsZW5kYXIuZ29vZ2xlLmNvbQ

  • Monday, April 22, 2019
    Princeton University/Institute for Advanced Study Early Universe/Cosmology Lunch Discussion

    Location: Princeton University, Peyton Hall, Dome Room, Room 201
    Time: 12:30 PM
    Speaker(s): Laurence Levasseur, Center for Computational Astrophysics, Flatiron Institute

    Description: Organizers are Jo Dunkley, Princeton University, and Matias Zaldarriaga, Institute for Advanced Study. The lunch will be held either at Princeton University or the Institute for Advanced Study. Check the calendar for the meeting location. This week's meeting is at Princeton University. Attendees can bring lunch.
    https://web.astro.princeton.edu/events/seminars/cosmology-lunch

  • Monday, April 22, 2019
    Princeton University Data Science / COMPASS Seminar
    “Accelerating Scientific Calculations with GPUs”

    Location: Peter B. Lewis Science Library, Visualization Lab, Rm. 347
    Time: 4:00 PM
    Speaker(s): Evan Schneider, Princeton University

    Description: Have you always wondered whether you could use GPUs in your research but were too intimidated to try them? Then this lecture is for you! In this talk, I will give a *brief* introduction to parallel programming and the use of the general purpose graphics processing unit (GPU) for scientific calculations. Both general parallel programming models and the specific CUDA thread/block model for GPUs will be covered. I will also discuss Numba, a just-in-time compiler for python that allows you to easily play around with GPU computing with a low barrier to entry. Along with the lecture, I will provide a python notebook through Googles Colaboratory that contains simple examples to help you get a feel for whether GPUs could be helpful for your science.

    Every week we discuss data science methods and applications from papers, reviews, software releases, etc. We also have demos for useful/fancy methods by locals and visitors through the COMPASS program. The setting is informal. Material should be presented directly from the source or on the white board, demos should be hands-on. We collect links to documents, source code, tutorials, etc. for later perusal in this github repo. If you would like to present at the data science seminar, please contact the organizers Peter Melchior (melchior[at]astro.princeton.edu), Adrian Price-Whelan (adrn[at]astro.princeton.edu), Christina Kreisch (ckreisch[at]astro.princeton.edu), Lachlan Lancaster (lachlanl[at]princeton.edu).
    https://web.astro.princeton.edu/events/seminars/data-science-compass

  • Tuesday, April 23, 2019
    Institute for Advanced Study/Princeton University Joint Astrophysics Colloquium
    “A Magnified Vision of How Galaxies Evolve”

    Location: Princeton University, Peyton Hall, Auditorium, Room 145
    Time: 11:00 AM
    Speaker(s): Jane Rigby, Space Telescope Science Institute (STScI)
    Note: Coffee and refreshments are available from 10:15 am in Peyton Hall Common Room.

    Description: In hundreds of known cases, "gravitational lenses deflect, distort, and magnify images of galaxies behind them. Lensing can magnify galaxies by factors of 10--100 times, transforming them from objects we can barely detect to bright objects we can study in detail. We have taken advantage of these natural telescopes to build Megasaura: The Magellan Evolution of Galaxies Spectroscopic and Ultraviolet Reference Atlas. Megasaura is an atlas of high signal-to-noise, medium spectral resolution (R~3000) spectra of 21 extremely bright gravitationally lensed galaxies at redshifts of 1.7<z<3.6.  The Megasaura spectra reveal a wealth of spectral diagnostics: absorption lines from gas being blown out of the galaxy, emission lines from gas heated by newly-formed stars, and photospheric absorption lines and P Cygni profiles from the massive stars that power the outflow. These will be key diagnostics for future telescopes (JWST and beyond) that with Megasaura we can study now.  Indeed, Megasaura will be the definitive spectral atlas of its kind until the advent of 2030m ground-based telescopes in the late 2020s, giving insight into the processes by which galaxies evolve over cosmic time.
    http://www.sns.ias.edu/astrophysics/joint-iaspu-astrophysics-colloquium

  • Tuesday, April 23, 2019
    Institute for Advanced Study / Princeton University Bahcall Lunch

    Location: Princeton University, Jadwin Hall, Joseph Henry Room, Room 102
    Time: 12:15 PM

  • Tuesday, April 23, 2019
    Pheno & Vino Seminar
    “Astrometric Weak Lensing from Dark Matter Substructures”

    Location: Jadwin Hall, Room 303
    Time: 4:00 PM
    Speaker(s): Christina Mondino, New York University

    Description: It has been recently pointed out that variable weak gravitational lensing effects on the motion of background stars can be used to probe nonluminous structures inside the Milky Way halo. I will describe one possible detection strategy targeting collapsed dark matter structures in the mass range from million to billion solar masses. The data analysis technique will be discussed in detail with an application to Gaia's second data release.

  • Wednesday, April 24, 2019
    Physics Group Meeting
    “The Current State of Gravitational Wave Searches with LIGO/VIRGO”

    Location: Bloomberg Lecture Hall
    Time: 1:45 PM
    Speaker(s): Matias Zaldarriaga, Faculty, School of Natural Sciences, IAS

    Description: The LIGO/VIRGO collaboration has just started their observing run 3. I will first give an introduction to gravitational wave searches and the events that have been found so far and describe some of the interesting astrophysics problems that might be addressed in the coming few years. Together with the rest of the IAS team, I will then describe the results of the searches for new events in the publicly available LIGO data that we have carried out (https://arxiv.org/pdf/1902.10331.pdf, https://arxiv.org/pdf/1904.07214.pdf, https://arxiv.org/pdf/1902.10341.pdf). These searches have nearly doubled the catalog of binary black hole mergers. 

  • Wednesday, April 24, 2019
    University of Pennsylvania Astrophysics Seminar
    “IAccretion in the Shadow of M87”

    Location: David Rittenhouse Laboratory (DRL) (209 South 33rd Street), Room A2
    Time: 2:00 PM
    Speaker(s): Joey Neilsen, Villanova University

    Description: With the Event Horizon Telescopes groundbreaking detection of the shadow of the supermassive black hole in M87, we have entered a new era of black hole astrophysics. After presenting the first results from the EHT, I will give a high-energy astrophysicists view of what comes next. Looking to the future, I will focus on how coordinated EHT/X-ray observations can help us address lingering open questions about accretion onto black holes, including how they accelerate particles to high energies and, possibly, the physics of variability around our own supermassive black hole, Sgr A*.
    http://www.physics.upenn.edu/events/

  • Wednesday, April 24, 2019
    Princeton University Astroplasmas Special Seminar
    “Hyper-Resistive Model of UHE Cosmic Ray Acceleration by AGNs”

    Location: Peyton Hall, Dome Room, Room 201
    Time: 3:00 PM
    Speaker(s): T. K. Fowler, University of California, Berkeley
    Note: Special day and time.

    Description: Ultra High Energy (UHE) cosmic rays ( 1020 eV) may be produced by known processes of acceleration by plasma turbulence in magnetized jets produced by Active Galactic Nuclei (AGNs). A simple model in which turbulence is represented as hyper-resistivity in Ohms Law yields several predictions in sufficient agreement with observations to motivate further investigation. Besides jet dimensions, these predictions include the unique extra-galactic cosmic ray energy spectrum ( 1/E3) and a different interpretation of the synchrotron radiation by which AGN jets are observed. Crucial to the model is a new theory of jet propagation whereby un-collimated jets generated by General Relativistic MHD simulations evolve to a highly collimated structure, finally evolving at speed 0.01c that explains jet dimensions, while relativistic acceleration parallel to field lines yields both cosmic rays and synchrotron radiation. References: [1] S. A. Colgate, T. K. Fowler, H. Li & J.Pino, 2014 ApJ 789, 144, on AGN jets [2] S. A. Colgate, T. K. Fowler, H. Li et al. 2015 ApJ 813, 136, on jet stability [3] T. K. Fowler & H. Li, 2016 J. Plas. Phys. 82, 595820513, on UHE acceleration [4] T. K. Fowler, H. Li, R. Anantua, 2019 ArXiV 2615445
    https://web.astro.princeton.edu/events/seminars/astroplasmas

  • Thursday, April 25, 2019
    Institute for Advanced Study Informal Astrophysics Seminar
    “Foundations of Strongly Lensed Supernova Cosmology”

    Location: Bloomberg Hall, Astrophysics Library
    Time: 11:00 AM
    Speaker(s): Danny Goldstein, California Institute of Technology

    Description: In this talk I will present solutions to some problems associated with using strongly gravitationally lensed supernovae (gLSNe) to measure the cosmological parameters.  Chief among these are new methods for finding gLSNe and extracting their time delays in the presence of microlensing. The latter of these results involved performing simulations of radiation transport in supernova atmospheres. I will also talk about how these simulations provided evidence that some Type Ia supernovae come from sub-Chandrasekhar mass progenitors. 
    https://www.sns.ias.edu/astrophysics/informal-seminars

  • Thursday, April 25, 2019
    Princeton University Thunch Talk
    “Implications for the Stochastic Gravitational Wave Background from a Massive Quasar-binary”

    Location: Peyton Hall, Room 033 (basement)
    Time: 12:15 PM
    Speaker(s): Kris Pardo, Princeton University

    Description: The collective inspirals of very close-separation supermassive black holes (SMBHs) are expected to produce a stochastic gravitational wave background (GWB) at nHz frequencies, which is accessible to pulsar timing arrays. However, we have yet to detect this background or find any SMBH binaries that are sufficiently massive or at small enough separations to contribute appreciably to the GWB. Using Hubble Space Telescope imaging, we have identified a pair of rapidly-growing supermassive black holes (M>4.e8 solar masses) at z=0.2 that are separated by only 400 parsecs. While this pair is not currently in the GW-emission regime, it points to a population of SMBH pairs that should have merged by today, unless there is a final parsec problem. Using estimates for the number density of such sources, we place limits on the expected GWB amplitude. I'll discuss the issues surrounding these calculations and how we can expect to learn more about the GWB and SMBH dynamics as we search for more of these SMBH pairs.
    https://web.astro.princeton.edu/Thunch

  • Thursday, April 25, 2019
    Rutgers University Astrophysics Seminar
    “The Origin of Multiphase Galaxy Outflows”

    Location: Serin Hall, Room 401
    Time: 1:30 PM
    Speaker(s): Evan Schneider, Princeton University
    Note: Refreshments to follow in room 332W.

    Description: Star-forming galaxies are often observed to host galactic winds - gas that is flowing out of the galaxy in phases ranging from cold molecular clouds to hot X-ray emitting plasma. While these multiphase outflows are routinely observed, theoretically constraining their origin and evolution has proven difficult. Explaining the prevalence and velocities of the cool ionized phase (T~10^4 K) in particular poses a challenge. In this talk, I will discuss a potential dual origin for this cool gas. Through a series of extremely high-resolution simulations run with the GPU-based Cholla code, I will show that in high star formation surface density systems, dense disk gas can be pushed out by the collective effect of clustered supernovae, explaining the low-velocity material. Simultaneously, shredding and mixing of these clouds increases the density of the hot phase of the wind, leading to large-scale radiative losses that produce high velocity cool gas. In addition to explaining the nature of outflows themselves, these multiphase winds could potentially be a source of the cool photo-ionized gas that is found in abundance in galaxy halos.
    http://www.physicsmatt.com/astrophysics-seminars-spring-2019

  • Friday, April 26, 2019
    Princeton University HSC Group Discussion
    “General Discussion”

    Location: Peyton Hall, Room 025
    Time: 10:00 AM

  • Friday, April 26, 2019
    Princeton University Astrophysical Sciences Supernova Discussion Group

    Location: Peyton Hall, Room 140
    Time: 11:00 AM

    Description: Everyone is welcome. Adam Burrows is the organizer.

  • Friday, April 26, 2019
    Princeton University Astroplasmas Seminar
    “TBA”

    Location: Peyton Hall, Dome Room, Room 201
    Time: 12:30 PM
    Speaker(s): Jordy Davelaar, Radboud University Nijmegen & Center for Computational Astrophysics NY

    Description:  
    https://web.astro.princeton.edu/events/seminars/astroplasmas

  • Monday, April 29, 2019
    Princeton University/Institute for Advanced Study Galread [Galactic/Extragalactic Reading Group]

    Location: Princeton University, Peyton Hall, Grand Central
    Time: 11:00 AM
    Speaker(s): Discussion Leader

    Description: Each week, we hold a relatively informal seminar/discussion series in Peyton Hall with an emphasis on extra-galactic and large-scale structure astrophysics. During Galread a leader/visitor presents a recent paper to the discussion group. The PDF of the paper is projected onto a large screen, and a guest explains the paper, section by section, in greater detail than may be explained within the text of the article. To aid with discussion, only the article PDF is presented -- no powerpoint-style slides. Galread discussions are very friendly and interactive. If you would like to present at Galread, please contact Andy Goulding (goulding[at]astro.princeton.edu) or Jenny Greene (jgreene[at]astro.princeton.edu). The group's website is: http://web.astro.princeton.edu/events/seminars/galread.

  • Monday, April 29, 2019
    Princeton University/Institute for Advanced Study Planet/Exoplanet Discussion Group
    “Potluck Discussion of Exoplanet Papers”

    Location: Princeton University, Peyton Hall, Room 140
    Time: 12:15 PM

    Description: The Monday Planet Lunch will be held weekly. We discuss recent papers from astro-ph and hear from the occasional exoplanet visitor. Graduate students are particularly encouraged to attend. The format will be informal and inclusive, spanning at a minimum exoplanets, the solar system, and astrobiology. Moreover, we plan on discussing multiple topics each time we meet, and not to tether a lunch to one organized presentation each sitting. The purpose is to foster wide-ranging and cross-fertilizing interaction and to keep the local community up to date on developments across the spectrum of associated activities. Joel Hartman is the organizer.
    https://calendar.google.com/calendar/embed?src=MWw3Y2JhdnBucnZhaWkxbTd2YTdqNDNldmNAZ3JvdXAuY2FsZW5kYXIuZ29vZ2xlLmNvbQ

  • Monday, April 29, 2019
    Princeton University/Institute for Advanced Study Early Universe/Cosmology Lunch Discussion
    “Inhomogeneous Initial Conditions and the Start of Inflation”

    Location: Institute for Advanced Study, West Building, West Seminar Room
    Time: 12:30 PM
    Speaker(s): Patrick John Fitzpatrick, Massachusetts Institute of Technology

    Description: The robustness of inflation to inhomogeneous initial conditions for matter fields and the spacetime metric is under investigation. If inflationary expansion fails to begin under sufficiently inhomogeneous initial conditions, such that inflation requires fine-tuning of its initial state to occur, then its naturalness is challenged. I will present results for the range of initial conditions which give rise to inflation, based on numerical calculations which evolve the equations of motion of the scale factor and the inflaton field coupled to its quantum fluctuations and metric perturbations through a well-defined set of nonlinear interactions in the Hartree approximation. These results address to what extent inflation can occur under inhomogeneous initial conditions for a few standard slow-roll single-field inflationary models, in calculations which include effects of gravitational back-reaction of perturbations on the background dynamics and on the perturbations themselves, and which have wide applications beyond the inflationary models I will present. Our findings are consistent with recent simulations involving full (3+1) numerical relativity. However, by relying on certain well-studied approximations, our numerical approach can be applied more efficiently to a wide range of models, and can track the evolution of perturbations across a wide range of scales, thereby complementing the recent numerical-relativity simulations.

    Organizers are Jo Dunkley, Princeton University, and Matias Zaldarriaga, Institute for Advanced Study. The lunch will be held either at Princeton University or the Institute for Advanced Study. Check the calendar for the meeting location. This week's meeting is at the Institute for Advanced Study. Attendees can bring their own lunch or stop at the IAS Dining Hall. The West Seminar room is in a building which is a short walk from the main dining area.
    https://web.astro.princeton.edu/events/seminars/cosmology-lunch

  • Monday, April 29, 2019
    Gravity Initiative Lunch
    “TBA”

    Location: Jadwin Hall, Room 111
    Time: 12:30 PM
    Speaker(s): Felicity Eperon, University of Cambridge

  • Monday, April 29, 2019
    Princeton University Data Science / COMPASS Seminar
    “Improving Bayesian Hierarchical Modeling for Supernova Cosmology via Selection Effects”

    Location: Peter B. Lewis Science Library, Visualization Lab, Rm. 347
    Time: 4:00 PM
    Speaker(s): Lucas Makinen, Princeton University

    Description: Distant supernovae are less likely than closer ones to be selected in astronomical surveys. To avoid the bias this phenomena introduces to our estimation of Dark Energy parameters, we incorporate selection effects into a hierarchical probabilistic framework, which estimates these parameters as a function of data and prior knowledge. The project is multidisciplinary by nature, featuring a combination of cosmology, astrophysics, data science, and computational optimization. The current goal is to calibrate our inference machinery to be able to handle the newly-released Dark Energy Survey data.

    Every week we discuss data science methods and applications from papers, reviews, software releases, etc. We also have demos for useful/fancy methods by locals and visitors through the COMPASS program. The setting is informal. Material should be presented directly from the source or on the white board, demos should be hands-on. We collect links to documents, source code, tutorials, etc. for later perusal in this github repo. If you would like to present at the data science seminar, please contact the organizers Peter Melchior (melchior[at]astro.princeton.edu), Adrian Price-Whelan (adrn[at]astro.princeton.edu), Christina Kreisch (ckreisch[at]astro.princeton.edu), Lachlan Lancaster (lachlanl[at]princeton.edu).

     
    https://web.astro.princeton.edu/events/seminars/data-science-compass

  • Tuesday, April 30, 2019
    Institute for Advanced Study/Princeton University Joint Astrophysics Colloquium

    Location: Princeton University, Peyton Hall, Auditorium, Room 145
    Time: 11:00 AM
    Speaker(s): Dan Marrone, University of Arizona
    Note: Coffee and refreshments are available from 10:15 am in Peyton Hall Common Room.

    Description:  
    http://www.sns.ias.edu/astrophysics/joint-iaspu-astrophysics-colloquium

  • Tuesday, April 30, 2019
    Institute for Advanced Study / Princeton University Bahcall Lunch

    Location: Princeton University, Jadwin Hall, Joseph Henry Room, Room 102
    Time: 12:15 PM

  • Tuesday, April 30, 2019
    Pheno & Vino Seminar
    “Search Optimization, Natural Selection and Self-Organized Criticality on the Landscape”

    Location: Jadwin Hall, Room 303
    Time: 4:00 PM
    Speaker(s): Justin Khoury, University of Pennsylvania

    Description: The most pressing fine-tuning puzzles of the Standard Model the cosmological constant and weak hierarchy problems, as well as the Higgs metastability  can all be understood as problems of near criticality. I will present a natural selection mechanism based on search optimization on the string landscape. The working assumption is that cosmological evolution on the multiverse has occurred for a finite time, much shorter than the exponentially-long global mixing time for the landscape. I will argue this imposes a strong selection pressure among hospitable vacua, favoring those that lie in optimal regions where the search algorithm is efficient. This satisfies the basic requirements for natural selection: a diverse gene pool, offered ab initio by the landscape; vacuum replication through cosmological expansion; and competition for a finite resource, namely the fraction of comoving volume. Optimality is defined by two competing requirements: search efficiency, which requires minimizing the mean-first passage time, and sweeping exploration, which requires recurrent random walks. Optimal landscape regions reach a compromise by lying at the critical boundary between recurrence and transience, thereby realizing the idea of self-organized criticality. The framework makes concrete phenomenological predictions: 1. The expected lifetime of our universe is ~10^{130} years, consistent with current Standard Model metastability estimates; 2. The SUSY breaking scale should be nearly Planckian; and 3. The predicted cosmological constant is M_Pl^4/N, which can account for the inferred vacuum energy if our optimal region contains N ~10^{120} vacua. Importantly, these predictions do not rely on anthropic reasoning and instead follow readily from optimality.

  • Wednesday, May 1, 2019
    Rutgers University Physics/Astronomy Colloquium

    Location: Serin Hall, Physics and Astronomy Lecture Hall
    Time: 10:30 AM
    Note: Tea, coffee, and cookies served at 10:20.
    http://www.physics.rutgers.edu/colloquium/

  • Thursday, May 2, 2019
    Institute for Advanced Study Informal Astrophysics Seminar

    Location: Bloomberg Hall, Astrophysics Library
    Time: 11:00 AM
    Speaker(s): Dimitrios Psaltis, The University of Arizona and Steward Observatory

    Description:  
    https://www.sns.ias.edu/astrophysics/informal-seminars

  • Thursday, May 2, 2019
    Rutgers University Astrophysics Seminar

    Location: Serin Hall, Room 330
    Time: 1:30 PM
    Note: Refreshments to follow in room 332W.
    http://www.physicsmatt.com/astrophysics-seminars-spring-2019

  • Friday, May 3, 2019
    Princeton University HSC Group Discussion
    “General Discussion”

    Location: Peyton Hall, Room 025
    Time: 10:00 AM

  • Friday, May 3, 2019
    Princeton University Astrophysical Sciences Supernova Discussion Group

    Location: Peyton Hall, Room 140
    Time: 11:00 AM

    Description: Everyone is welcome. Adam Burrows is the organizer.

  • Friday, May 3, 2019
    Institute for Advanced Study Informal Astrophysics Seminar - Special Date

    Location: Bloomberg Hall, Astrophysics Library
    Time: 11:00 AM
    Speaker(s): Tim de Zeeuw, Leiden Observatory and Max Planck Institute for Extraterrestrial Physics
    https://www.sns.ias.edu/astrophysics/informal-seminars

  • Friday, May 3, 2019
    Institute for Advanced Study Informal Astrophysics Seminar - Special Date
    “MUSE and GRAVITY”

    Location: Bloomberg Hall, Astrophysics Library
    Time: 11:00 AM
    Speaker(s): Tim de Zeeuw, Leiden Observatory and Max Planck Institute for Extraterrestrial Physics

    Description: This informal seminar will highlight results obtained recently with the transformational instruments MUSE and GRAVITY on ESOs Very Large Telescope at Paranal. For MUSE, the focus will be on an ongoing study of the internal dynamics, stellar populations and slope of the initial mass function of 33 bright galaxies within the virial radius of the Fornax cluster. The results connect the properties of the stellar populations to the internal dynamical structure. They provide insight into the structure of the cluster, which is dominated by the gravitational potential of the central galaxy NGC1399, and serve as a benchmark for (simulations of) the assembly and evolution of galaxies in a cluster environment. GRAVITYs interferometric measurements with the four 8m telescopes include the detection of the gravitational redshift and relativistic transverse Doppler motion in the highly-elliptical 16-year-period orbit of the star S2 around Sgr A*, the detection of looped motion of flares in Sgr A* at 30% of the speed of light near the innermost stable circular orbit of the central black hole, the measurement of the size of the broad-line region in 3C273 as well as a direct spectroscopic measurement of the properties of the atmosphere of a bright young planet orbiting HR8799e.
    https://www.sns.ias.edu/astrophysics/informal-seminars

  • Monday, May 6, 2019
    Princeton University/Institute for Advanced Study Planet/Exoplanet Discussion Group
    “Potluck Discussion of Exoplanet Papers”

    Location: Princeton University, Peyton Hall, Room 140
    Time: 12:15 PM

    Description: The Monday Planet Lunch will be held weekly. We discuss recent papers from astro-ph and hear from the occasional exoplanet visitor. Graduate students are particularly encouraged to attend. The format will be informal and inclusive, spanning at a minimum exoplanets, the solar system, and astrobiology. Moreover, we plan on discussing multiple topics each time we meet, and not to tether a lunch to one organized presentation each sitting. The purpose is to foster wide-ranging and cross-fertilizing interaction and to keep the local community up to date on developments across the spectrum of associated activities. Joel Hartman is the organizer.
    https://calendar.google.com/calendar/embed?src=MWw3Y2JhdnBucnZhaWkxbTd2YTdqNDNldmNAZ3JvdXAuY2FsZW5kYXIuZ29vZ2xlLmNvbQ

  • Monday, May 6, 2019
    Princeton University/Institute for Advanced Study Early Universe/Cosmology Lunch Discussion

    Location: Princeton University, Peyton Hall, Dome Room, Room 201
    Time: 12:30 PM

    Description: Organizers are Jo Dunkley, Princeton University, and Matias Zaldarriaga, Institute for Advanced Study. The lunch will be held either at Princeton University or the Institute for Advanced Study. Check the calendar for the meeting location. This week's meeting is at Princeton University. Attendees can bring lunch.
    https://web.astro.princeton.edu/events/seminars/cosmology-lunch

  • Tuesday, May 7, 2019
    Princeton University Astrophysical Sciences 2018 Spitzer Lecturer Colloquium

    Location: Peyton Hall Auditorium
    Time: 11:00 AM
    Note: This will be followed by the Bahcall Lunch.

  • Tuesday, May 7, 2019
    Institute for Advanced Study / Princeton University Bahcall Lunch

    Location: Princeton University, Jadwin Hall, Joseph Henry Room, Room 102
    Time: 12:15 PM

  • Thursday, May 9, 2019
    Institute for Advanced Study Informal Astrophysics Seminar
    “Neutron Star Mergers Across Cosmic Time”

    Location: Bloomberg Hall, Astrophysics Library
    Time: 11:00 AM
    Speaker(s): Wen-fai Fong, Northwestern University

    Description:  
    https://www.sns.ias.edu/astrophysics/informal-seminars

  • Friday, May 10, 2019
    Princeton University HSC Group Discussion
    “General Discussion”

    Location: Peyton Hall, Room 025
    Time: 10:00 AM

  • Friday, May 10, 2019
    Princeton University Astrophysical Sciences Supernova Discussion Group

    Location: Peyton Hall, Room 140
    Time: 11:00 AM

    Description: Everyone is welcome. Adam Burrows is the organizer.

  • Monday, May 13, 2019
    Princeton University/Institute for Advanced Study Planet/Exoplanet Discussion Group
    “Potluck Discussion of Exoplanet Papers”

    Location: Princeton University, Peyton Hall, Room 140
    Time: 12:15 PM

    Description: The Monday Planet Lunch will be held weekly. We discuss recent papers from astro-ph and hear from the occasional exoplanet visitor. Graduate students are particularly encouraged to attend. The format will be informal and inclusive, spanning at a minimum exoplanets, the solar system, and astrobiology. Moreover, we plan on discussing multiple topics each time we meet, and not to tether a lunch to one organized presentation each sitting. The purpose is to foster wide-ranging and cross-fertilizing interaction and to keep the local community up to date on developments across the spectrum of associated activities. Joel Hartman is the organizer.
    https://calendar.google.com/calendar/embed?src=MWw3Y2JhdnBucnZhaWkxbTd2YTdqNDNldmNAZ3JvdXAuY2FsZW5kYXIuZ29vZ2xlLmNvbQ

  • Monday, May 13, 2019
    Princeton University/Institute for Advanced Study Early Universe/Cosmology Lunch Discussion

    Location: Institute for Advanced Study, West Building, West Seminar Room
    Time: 12:30 PM

    Description: Organizers are Jo Dunkley, Princeton University, and Matias Zaldarriaga, Institute for Advanced Study. The lunch will be held either at Princeton University or the Institute for Advanced Study. Check the calendar for the meeting location. This week's meeting is at the Institute for Advanced Study. Attendees can bring their own lunch or stop at the IAS Dining Hall. The West Seminar room is in a building which is a short walk from the main dining area.
    https://web.astro.princeton.edu/events/seminars/cosmology-lunch

  • Thursday, May 16, 2019
    Institute for Advanced Study Informal Astrophysics Seminar

    Location: Bloomberg Hall, Astrophysics Library
    Time: 11:00 AM
    Speaker(s): Richard Shaw, The University of British Columbia

    Description:  
    https://www.sns.ias.edu/astrophysics/informal-seminars

  • Friday, May 17, 2019
    Princeton University HSC Group Discussion
    “General Discussion”

    Location: Peyton Hall, Room 025
    Time: 10:00 AM

  • Friday, May 17, 2019
    Princeton University Astrophysical Sciences Supernova Discussion Group

    Location: Peyton Hall, Room 140
    Time: 11:00 AM

    Description: Everyone is welcome. Adam Burrows is the organizer.

  • Monday, May 20, 2019
    Princeton University/Institute for Advanced Study Planet/Exoplanet Discussion Group
    “Potluck Discussion of Exoplanet Papers”

    Location: Princeton University, Peyton Hall, Room 140
    Time: 12:15 PM

    Description: The Monday Planet Lunch will be held weekly. We discuss recent papers from astro-ph and hear from the occasional exoplanet visitor. Graduate students are particularly encouraged to attend. The format will be informal and inclusive, spanning at a minimum exoplanets, the solar system, and astrobiology. Moreover, we plan on discussing multiple topics each time we meet, and not to tether a lunch to one organized presentation each sitting. The purpose is to foster wide-ranging and cross-fertilizing interaction and to keep the local community up to date on developments across the spectrum of associated activities. Joel Hartman is the organizer.
    https://calendar.google.com/calendar/embed?src=MWw3Y2JhdnBucnZhaWkxbTd2YTdqNDNldmNAZ3JvdXAuY2FsZW5kYXIuZ29vZ2xlLmNvbQ

  • Monday, May 20, 2019
    Princeton University/Institute for Advanced Study Early Universe/Cosmology Lunch Discussion

    Location: Princeton University, Peyton Hall, Dome Room, Room 201
    Time: 12:30 PM

    Description: Organizers are Jo Dunkley, Princeton University, and Matias Zaldarriaga, Institute for Advanced Study. The lunch will be held either at Princeton University or the Institute for Advanced Study. Check the calendar for the meeting location. This week's meeting is at Princeton University. Attendees can bring lunch.
    https://web.astro.princeton.edu/events/seminars/cosmology-lunch

  • Thursday, May 23, 2019
    Institute for Advanced Study Informal Astrophysics Seminar

    Location: Bloomberg Hall, Astrophysics Library
    Time: 11:00 AM
    Speaker(s): Joel Meyers, Canadian Institute for Theoretical Astrophysics (CITA)

    Description:  
    https://www.sns.ias.edu/astrophysics/informal-seminars

  • Friday, May 24, 2019
    Princeton University HSC Group Discussion
    “General Discussion”

    Location: Peyton Hall, Room 025
    Time: 10:00 AM

  • Friday, May 24, 2019
    Princeton University Astrophysical Sciences Supernova Discussion Group

    Location: Peyton Hall, Room 140
    Time: 11:00 AM

    Description: Everyone is welcome. Adam Burrows is the organizer.

  • Monday, May 27, 2019
    Princeton University/Institute for Advanced Study Early Universe/Cosmology Lunch Discussion - NOT MEETING TODAY

    Time: 12:30 PM
    https://web.astro.princeton.edu/events/seminars/cosmology-lunch

  • Thursday, May 30, 2019
    Institute for Advanced Study Informal Astrophysics Seminar

    Location: Bloomberg Hall, Astrophysics Library
    Time: 11:00 AM
    Speaker(s): Greg Salvesen, University of California, Santa Barbara

    Description:  
    https://www.sns.ias.edu/astrophysics/informal-seminars

  • Friday, May 31, 2019
    Princeton University HSC Group Discussion
    “General Discussion”

    Location: Peyton Hall, Room 025
    Time: 10:00 AM

  • Friday, May 31, 2019
    Princeton University Astrophysical Sciences Supernova Discussion Group

    Location: Peyton Hall, Room 140
    Time: 11:00 AM

    Description: Everyone is welcome. Adam Burrows is the organizer.

  • Monday, June 3, 2019
    Princeton University/Institute for Advanced Study Early Universe/Cosmology Lunch Discussion

    Location: Institute for Advanced Study, West Building, West Seminar Room
    Time: 12:30 PM

    Description: Organizers are Jo Dunkley, Princeton University; and Matias Zaldarriaga, Institute for Advanced Study. The lunch will be held either at Princeton University or the Institute for Advanced Study. Check the calendar for the meeting location. This week's meeting is at the Institute for Advanced Study. Attendees can bring their own lunch or stop at the IAS Dining Hall. The West Seminar room is in a building which is a short walk from the main dining area.
    https://web.astro.princeton.edu/events/seminars/cosmology-lunch

  • Monday, June 10, 2019
    Princeton University/Institute for Advanced Study Early Universe/Cosmology Lunch Discussion

    Location: Princeton University, Peyton Hall, Dome Room, Room 201
    Time: 12:30 PM

    Description: Organizers are Jo Dunkley, Princeton University, and Matias Zaldarriaga, Institute for Advanced Study. The lunch will be held either at Princeton University or the Institute for Advanced Study. Check the calendar for the meeting location. This week's meeting is at Princeton University. Attendees can bring lunch.
    https://web.astro.princeton.edu/events/seminars/cosmology-lunch

  • Monday, June 17, 2019
    Princeton University/Institute for Advanced Study Early Universe/Cosmology Lunch Discussion

    Location: Institute for Advanced Study, West Building, West Seminar Room
    Time: 12:30 PM

    Description: Organizers are Jo Dunkley, Princeton University, and Matias Zaldarriaga, Institute for Advanced Study. The lunch will be held either at Princeton University or the Institute for Advanced Study. Check the calendar for the meeting location. This week's meeting is at the Institute for Advanced Study. Attendees can bring their own lunch or stop at the IAS Dining Hall. The West Seminar room is in a building which is a short walk from the main dining area.
    https://web.astro.princeton.edu/events/seminars/cosmology-lunch

  • Monday, June 24, 2019
    Princeton University/Institute for Advanced Study Early Universe/Cosmology Lunch Discussion

    Location: Princeton University, Peyton Hall, Dome Room, Room 201
    Time: 12:30 PM

    Description: Organizers are Jo Dunkley, Princeton University, and Matias Zaldarriaga, Institute for Advanced Study. The lunch will be held either at Princeton University or the Institute for Advanced Study. Check the calendar for the meeting location. This week's meeting is at Princeton University. Attendees can bring lunch.
    https://web.astro.princeton.edu/events/seminars/cosmology-lunch

  • Tuesday, September 3, 2019
    Institute for Advanced Study / Princeton University Bahcall Lunch

    Location: Dilworth Room
    Time: 12:30 PM

  • Monday, September 9, 2019
    Princeton University/Institute for Advanced Study Early Universe/Cosmology Lunch Discussion

    Location: Institute for Advanced Study, West Building, West Seminar Room
    Time: 12:30 PM
    https://web.astro.princeton.edu/events/seminars/cosmology-lunch

  • Tuesday, September 10, 2019
    Institute for Advanced Study / Princeton University Bahcall Lunch

    Location: Dilworth Room
    Time: 12:30 PM

  • Tuesday, September 17, 2019
    Institute for Advanced Study / Princeton University Bahcall Lunch

    Location: Dilworth Room
    Time: 12:30 PM

  • Tuesday, September 24, 2019
    Institute for Advanced Study / Princeton University Bahcall Lunch

    Location: Dilworth Room
    Time: 12:30 PM

  • Monday, September 30, 2019
    Princeton University/Institute for Advanced Study Early Universe/Cosmology Lunch Discussion

    Location: Institute for Advanced Study, West Building, West Seminar Room
    Time: 12:30 PM
    https://web.astro.princeton.edu/events/seminars/cosmology-lunch

  • Tuesday, October 1, 2019
    Institute for Advanced Study / Princeton University Bahcall Lunch

    Location: Dilworth Room
    Time: 12:30 PM

  • Tuesday, October 8, 2019
    Institute for Advanced Study / Princeton University Bahcall Lunch

    Location: Dilworth Room
    Time: 12:30 PM

  • Tuesday, October 15, 2019
    Institute for Advanced Study / Princeton University Bahcall Lunch

    Location: Dilworth Room
    Time: 12:30 PM

  • Monday, October 21, 2019
    Princeton University/Institute for Advanced Study Early Universe/Cosmology Lunch Discussion

    Location: Institute for Advanced Study, West Building, West Seminar Room
    Time: 12:30 PM
    https://web.astro.princeton.edu/events/seminars/cosmology-lunch

  • Tuesday, October 22, 2019
    Institute for Advanced Study / Princeton University Bahcall Lunch

    Location: Dilworth Room
    Time: 12:30 PM

  • Monday, October 28, 2019
    Princeton University/Institute for Advanced Study Early Universe/Cosmology Lunch Discussion

    Location: Institute for Advanced Study, West Building, West Seminar Room
    Time: 12:30 PM
    https://web.astro.princeton.edu/events/seminars/cosmology-lunch

  • Tuesday, October 29, 2019
    Institute for Advanced Study / Princeton University Bahcall Lunch

    Location: Dilworth Room
    Time: 12:30 PM

  • Monday, November 4, 2019
    Princeton University/Institute for Advanced Study Early Universe/Cosmology Lunch Discussion

    Location: Institute for Advanced Study, West Building, West Seminar Room
    Time: 12:30 PM
    https://web.astro.princeton.edu/events/seminars/cosmology-lunch

  • Tuesday, November 5, 2019
    Institute for Advanced Study / Princeton University Bahcall Lunch

    Location: Dilworth Room
    Time: 12:30 PM

  • Tuesday, November 12, 2019
    Institute for Advanced Study / Princeton University Bahcall Lunch

    Location: Dilworth Room
    Time: 12:30 PM

  • Monday, November 18, 2019
    Princeton University/Institute for Advanced Study Early Universe/Cosmology Lunch Discussion

    Location: Institute for Advanced Study, West Building, West Seminar Room
    Time: 12:30 PM
    https://web.astro.princeton.edu/events/seminars/cosmology-lunch

  • Tuesday, November 19, 2019
    Institute for Advanced Study / Princeton University Bahcall Lunch

    Location: Dilworth Room
    Time: 12:30 PM

  • Tuesday, November 26, 2019
    Institute for Advanced Study / Princeton University Bahcall Lunch

    Location: Dilworth Room
    Time: 12:30 PM

  • Monday, December 2, 2019
    Princeton University/Institute for Advanced Study Early Universe/Cosmology Lunch Discussion

    Location: Institute for Advanced Study, West Building, West Seminar Room
    Time: 12:30 PM
    https://web.astro.princeton.edu/events/seminars/cosmology-lunch

  • Tuesday, December 3, 2019
    Institute for Advanced Study / Princeton University Bahcall Lunch

    Location: Dilworth Room
    Time: 12:30 PM

  • Tuesday, December 10, 2019
    Institute for Advanced Study / Princeton University Bahcall Lunch

    Location: Dilworth Room
    Time: 12:30 PM

  • Monday, December 16, 2019
    Princeton University/Institute for Advanced Study Early Universe/Cosmology Lunch Discussion

    Location: Institute for Advanced Study, West Building, West Seminar Room
    Time: 12:30 PM
    https://web.astro.princeton.edu/events/seminars/cosmology-lunch

  • Tuesday, December 17, 2019
    Institute for Advanced Study / Princeton University Bahcall Lunch

    Location: Dilworth Room
    Time: 12:30 PM

  • Monday, January 13, 2020
    Princeton University/Institute for Advanced Study Early Universe/Cosmology Lunch Discussion

    Location: Institute for Advanced Study, West Building, West Seminar Room
    Time: 12:30 PM
    https://web.astro.princeton.edu/events/seminars/cosmology-lunch

  • Monday, February 3, 2020
    Princeton University/Institute for Advanced Study Early Universe/Cosmology Lunch Discussion

    Location: Institute for Advanced Study, West Building, West Seminar Room
    Time: 12:30 PM
    https://web.astro.princeton.edu/events/seminars/cosmology-lunch

  • Monday, March 2, 2020
    Princeton University/Institute for Advanced Study Early Universe/Cosmology Lunch Discussion

    Location: Institute for Advanced Study, West Building, West Seminar Room
    Time: 12:30 PM
    https://web.astro.princeton.edu/events/seminars/cosmology-lunch

  • Monday, March 16, 2020
    Princeton University/Institute for Advanced Study Early Universe/Cosmology Lunch Discussion

    Location: Institute for Advanced Study, West Building, West Seminar Room
    Time: 12:30 PM
    https://web.astro.princeton.edu/events/seminars/cosmology-lunch

  • Monday, March 30, 2020
    Princeton University/Institute for Advanced Study Early Universe/Cosmology Lunch Discussion

    Location: Institute for Advanced Study, West Building, West Seminar Room
    Time: 12:30 PM
    https://web.astro.princeton.edu/events/seminars/cosmology-lunch

  • Monday, April 13, 2020
    Princeton University/Institute for Advanced Study Early Universe/Cosmology Lunch Discussion

    Location: Institute for Advanced Study, West Building, West Seminar Room
    Time: 12:30 PM
    https://web.astro.princeton.edu/events/seminars/cosmology-lunch

  • Monday, April 27, 2020
    Princeton University/Institute for Advanced Study Early Universe/Cosmology Lunch Discussion

    Location: Institute for Advanced Study, West Building, West Seminar Room
    Time: 12:30 PM
    https://web.astro.princeton.edu/events/seminars/cosmology-lunch

  • Monday, May 11, 2020
    Princeton University/Institute for Advanced Study Early Universe/Cosmology Lunch Discussion

    Location: Institute for Advanced Study, West Building, West Seminar Room
    Time: 12:30 PM
    https://web.astro.princeton.edu/events/seminars/cosmology-lunch

  • Monday, June 1, 2020
    Princeton University/Institute for Advanced Study Early Universe/Cosmology Lunch Discussion

    Location: Institute for Advanced Study, West Building, West Seminar Room
    Time: 12:30 PM
    https://web.astro.princeton.edu/events/seminars/cosmology-lunch

  • Monday, June 15, 2020
    Princeton University/Institute for Advanced Study Early Universe/Cosmology Lunch Discussion

    Location: Institute for Advanced Study, West Building, West Seminar Room
    Time: 12:30 PM
    https://web.astro.princeton.edu/events/seminars/cosmology-lunch

  • Monday, June 29, 2020
    Princeton University/Institute for Advanced Study Early Universe/Cosmology Lunch Discussion

    Location: Institute for Advanced Study, West Building, West Seminar Room
    Time: 12:30 PM
    https://web.astro.princeton.edu/events/seminars/cosmology-lunch

  • Tuesday, September 1, 2020
    Institute for Advanced Study / Princeton University Bahcall Lunch

    Location: Dilworth Room
    Time: 12:15 PM

  • Tuesday, September 8, 2020
    Institute for Advanced Study / Princeton University Bahcall Lunch

    Location: Dilworth Room
    Time: 12:15 PM

  • Tuesday, September 15, 2020
    Institute for Advanced Study / Princeton University Bahcall Lunch

    Location: Dilworth Room
    Time: 12:15 PM

  • Tuesday, September 22, 2020
    Institute for Advanced Study / Princeton University Bahcall Lunch

    Location: Dilworth Room
    Time: 12:15 PM

  • Tuesday, September 29, 2020
    Institute for Advanced Study / Princeton University Bahcall Lunch

    Location: Dilworth Room
    Time: 12:15 PM

  • Tuesday, October 6, 2020
    Institute for Advanced Study / Princeton University Bahcall Lunch

    Location: Dilworth Room
    Time: 12:15 PM

  • Tuesday, October 13, 2020
    Institute for Advanced Study / Princeton University Bahcall Lunch

    Location: Dilworth Room
    Time: 12:15 PM

  • Tuesday, October 20, 2020
    Institute for Advanced Study / Princeton University Bahcall Lunch

    Location: Dilworth Room
    Time: 12:15 PM

  • Tuesday, October 27, 2020
    Institute for Advanced Study / Princeton University Bahcall Lunch

    Location: Dilworth Room
    Time: 12:15 PM

  • Tuesday, November 3, 2020
    Institute for Advanced Study / Princeton University Bahcall Lunch

    Location: Dilworth Room
    Time: 12:15 PM

  • Tuesday, November 10, 2020
    Institute for Advanced Study / Princeton University Bahcall Lunch

    Location: Dilworth Room
    Time: 12:15 PM

  • Tuesday, November 17, 2020
    Institute for Advanced Study / Princeton University Bahcall Lunch

    Location: Dilworth Room
    Time: 12:15 PM

  • Tuesday, November 24, 2020
    Institute for Advanced Study / Princeton University Bahcall Lunch

    Location: Dilworth Room
    Time: 12:15 PM

  • Tuesday, December 1, 2020
    Institute for Advanced Study / Princeton University Bahcall Lunch

    Location: Dilworth Room
    Time: 12:15 PM

  • Tuesday, December 8, 2020
    Institute for Advanced Study / Princeton University Bahcall Lunch

    Location: Dilworth Room
    Time: 12:15 PM

  • Tuesday, December 15, 2020
    Institute for Advanced Study / Princeton University Bahcall Lunch

    Location: Dilworth Room
    Time: 12:15 PM