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The Future of Numerical Relativity: Gravitational Memory, BMS Frames, and More
As was realized by Bondi, Metzner, van der Burg, and Sachs (BMS), the symmetry group of asymptotic infinity is not the Poincaré group, but an infinite-dimensional group called the BMS...
Nov 17, 2022
On the fate of the LR instability
Abstract and Zoom Link: https://pitp.zoom.us/j/91762985902?pwd=djhwYVdsQ25GVVBRVTlwSkQvaDJ4Zz09
Oct 18, 2022
: From black holes to the Big Bang: astrophysics and cosmology with gravitational waves and their electromagnetic counterparts
The growing catalog of gravitational-wave signals from compact object mergers has allowed us to study the properties of black holes and neutron stars more precisely than ever before and has...
Oct 27, 2022
Perspectives on Matter Effects in GW170817
The detection of coalescing neutron stars via gravitational waves (GW170817) has revolutionized our understanding of the equation of state at supranuclear densities. The equation of state determines how neutron stars...
Oct 17, 2019
Real-time dynamics of plasma balls in a confining background
Black holes in the background of the AdS soliton are, according to the gauge/gravity correspondence, dual to droplets of deconfined plasma surrounded by a confining vacuum. In this talk I...
Oct 31, 2019
Binary black hole simulations: from supercomputers to your laptop
Simulations that numerically solve Einstein's equations are the only means to accurately predict the outcome of the merger of two black holes. The most important outputs from these simulations are...
Nov 07, 2019
Weak Cosmic Censorship in Einstein-Scalar theory in flat 4D
We present a plausible counterexample to the weak cosmic censorship conjecture in four-dimensional Einstein-Scalar theory with asymptotically flat boundary conditions. Our setup stems from the analysis of the massive Klein-Gordon...
Nov 21, 2019
How neutron star mergers can be used to study hadron-quark phase transitions
With the detection of GW170817 we have observed the first multi messenger signal from two merging neutron stars. This signal carried a multitude of information about the underlying equation of...
Nov 28, 2019
Nonlinear dynamical tides in white dwarf binaries
Compact white dwarf (WD) binaries are important sources for space-based gravitational-wave (GW) observatories, and an increasing number of them are being identified by surveys like ELM and ZTF. We study...
May 28, 2020
Phase Shift of Gravitational Waves induced by Aberration
The velocity of a gravitational wave (GW) source provides crucial information about its formation and evolution processes. Previous studies considered the Doppler effect on the phase of GWs as a...
Jun 18, 2020