Speaker
Description
In spite of its fragile elegance, General Relativity (GR) is subject to scrutiny due to several factors, such as observational evidence such as "dark matter" and "dark energy", along with theoretical challenges like inevitable singularities and the enigma of black-hole information loss. In alternative gravity theories, the macroscopic properties of neutron stars (NSs) such as mass, radius, tidal deformability etc. are modified. This creates a degeneracy between equation of state (EoS) and gravity, potentially the effect of EoS can be mimicked by using a different theories of gravity. We formulate a hierarchical Bayesian framework to simultaneously infer the EoS and theories of gravity by combining multiple astrophysical observations. We find current GW detectors do not have such sensitivity to break the degeneracy. But future GW detectors ET and CE with improved design sensitivity are expected to detect louder signals and might be able to break this degeneracy.
