Astrophysics Research Interests
Faculty
 Professor James Stone: Astrophysical gas dynamics; star and planet formation, accretion flows, interstellar gas dynamics. Numerical algorithms for magnetohydrodynamics and radiation hydrodynamics
 Professor Matias Zaldarriaga: Cosmology  early universe cosmology, cosmological perturbation theory, cosmic microwave background, largescale structure, dark matter and dark energy
Current Members

Kazuyuki Akitsu: tidal effects arising from the initial conditions or the gravitational clustering in the cosmological structure formation; extracting cosmological signals hidden in the shape of galaxies.

Lev Arzamasskiy: Plasma astrophysics, collisionless turbulence, particle heating, plasma instabilities, accretion disks, solar wind, intracluster medium

Giovanni Cabass: Effective field theory methods in cosmology: inflation and largescale structure; galaxy bias; nonGaussianity of primordial gravitational waves

ShiFan Chen: large scale structure of the universe and studies both its evolution and use to constrain fundamental physics, with an emphasis on perturbative methods. A particular recent interest has involved using these techniques in the arena of cross correlations, which he plans to further develop at the Institute.

Sihao Cheng: using statistical analysis to understand our Universe, including topics in cosmology, stellar physics, and extrasolar planets. Recently he has become interested in developing analytical tools inspired by neural networks and studying their connection to and applications in physics.

Horng Sheng Chia: Gravitational waves, orbital dynamics, black holes and neutron stars, astroparticle physics, dark matter, physics beyond the Standard Model, cosmology

Chris Hamilton: dynamics of galaxies, globular clusters, binary stars, and planetary systems; compact object mergers (LIGO/Virgo gravitational wave progenitors); and the kinetic theory of stellar systems and plasmas.

Christopher Hirata: Interests ranging from the early Universe (inflation and the cosmic microwave background) to the late Universe (large scale structure and dark energy). Hirata is a theorist, but has a particular interest in statistics, data analysis, and collaboration with observational programs.

HsiangChih Hwang: Binary stars, binary quasars, galactic dynamics, galactic archaeology, chemical abundances, white dwarfs

Mikhail Ivanov: cosmological structure formation; gravitational clustering; black hole physics and the effective field theory of inspiraling binaries.

Linial Itai: broad range of theoretical topics in astrophysics, including highenergy transient phenomena and dynamical processes occurring near supermassive black holes in centers of galaxies and sources of gravitational waves.

Stephen Lubow: works on the theory of planet formation, binary stars, and accretion disks around young stars.

Lia Medeiros: Black holes, the Galactic center black hole Sgr A*, the Event Horizon Telescope, tests of GR, accretion disks, variability of accreting systems, principal components analysis, simulations

Elias Most: Gravitational waves, neutron stars, neutron star equation of state, neutron star mergers, electromagnetic precursors, magnetohydrodynamics, numerical relativity, numerical methods for astrophysical fluid dynamics

Patrick Mullen: astrophysical magnetohydrodynamics; numerical simulations of the planetary scale giant impact thought to have formed Earth's Moon.

Kohta Murase: investigating the origins of highenergy cosmic particles and underlying physical mechanisms; extreme astrophysical phenomena related to black holes and neutron stars in light of multimessenger astrophysics; exploring novel probes of dark matter and physics beyond the Standard Model.

Elena Murchikova: Milky Way's Galactic Centre black hole Sagittarius A*; black hole accretion; accretion disks; ALMA; neutron stars and chiral fluids

Tomohiro Ono: focuses on planet formation and numerical algorithms for astrophysical magnetohydrodynamic simulations. While at IAS, he will work on the improvement and optimization of the Athena++ code.

Martin Pessah: theoretical astrophysics, including dust dynamics and planet formation in protoplanetary disks, accretion flows feeding black holes, the dilute plasma permeating galaxy clusters; problems related to gravitational wave astrophysics and tidal disruption events.

Annika Peter: dark matter astrophysicist, working on theoretical and observational signatures of dark matter in the cosmos. During her IAS visit, she plans to learn more about plasma astrophysics, and work on theoretical and observational aspects of dwarf galaxydark matter halo connections.

Carolyn Raithel: Neutron stars, the densematter equation of state, gravitational waves, neutron star mergers, Bayesian inference, numerical simulations, corecollapse supernovae

Bart Ripperda: trying to connect fundamental plasma physics with observations of highenergy emission from black holes and neutron stars. While at IAS, he will study the plasma physics of these compact objects by using a novel combination of generalrelativistic kinetic simulations and magnetohydrodynamics models.

Sahu Kailash: focused on applying microlensing, transit, and relativistic deflection techniques to study exoplanets, nearby stars and black holes. He recently reported the first unambiguous detection of a stellarmass black hole, and measured its mass.

Sophie Schroder: uses numerical methods and analytic modeling to study highenergy astrophysical phenomena and especially evolution of stellar binaries; the impact of hydrodynamical interactions on orbiting binaries and populations of gravitational wave sources.

Digvijay Wadekar: cosmology, astroparticle physics and machine learning; cosmological inference from galaxy surveys, probing nonstandard dark matter using dwarf galaxies, and machine learning to emulate expensive hydrodynamic simulations.

George Wong: highenergy astrophysical phenomena, especially in the context of accretion onto supermassive black holes; connection between black holes and relativistic jets as might be observed by nextgeneration experiments.

Siyao Xu: Magnetohydrodynamic turbulence, turbulent dynamo, magnetic reconnection, cosmic rays, (first) star formation, highenergy astrophysics, interstellar / intergalactic turbulence

Tomer Yavetz: applying the tools of theoretical dynamics in order to understand a variety of phenomena, ranging from the orbits of Earth satellites to the nature of dark matter. His main focus is on studying the distribution and substructure of dark matter in the Milky Way.

Muni Zhou: uses a combination of analytic theory and numerical experiments to study plasma physics problems such as magnetogenesis, plasma dynamos, and kinetic turbulence.