Abstract Details
| Name: ABHIRUP GHOSH Affiliation: INTERNATIONAL CENTRE FOR THEORETICAL SCIENCES, TIFR Conference ID: ASI2016_668 Title : Testing general relativity using golden black-hole binaries Authors and Co-Authors : Archisman Ghosh, Nathan K. Johnson-McDaniel, and Parameswaran Ajith (ICTS,TIFR), Walter Del Pozzo (University of Birmingham), David A. Nichols (Cornell University), Yanbei Chen (California Institute of Technology) Abstract Type : Oral Abstract Category : General Relativity and Cosmology Abstract : Binary black hole (BBH) coalescences are among the most energetic events in the Universe, where a considerable fraction of the binary's mass and angular momentum is radiated as gravitational waves (GWs). A “golden†BBH is a system for which the inspiral, i.e, when the black holes are spiralling towards each other, and ringdown, when the final black hole is settling down to a stationary state, are both well in the band of the detector. If a GW signal from such a system, is observed with good enough signal-to-noise ratio, the masses and spins of the binary black holes can be estimated just from the inspiral part of the signal. Given the estimates of the initial parameters of the binary, the mass and spin of the final black hole can be uniquely predicted making use of numerical-relativity simulations. In addition, the mass and spin of the final black hole can be independently estimated from the ringdown part. If General Relativity is the correct theory of gravity, these independent estimates have to be consistent with each other. We describe a Bayesian implementation of such a test of General Relativity (GR) that would make use of upcoming GW observations. We also show that this test is sensitive to GR violations that are not constrained by observations of the double pulsar. |