| Name: | SAMSUZZAMAN AFROZ |
| Affiliation: | TATA INSTITUTE OF FUNDAMENTAL RESEARCH, MUMBAI |
| Conference ID : | ASI2024_957 |
| Title : | A New Test of General Relativity at the Cosmological Scales Using Multi-Messenger Observations. |
| Authors : | Samsuzzaman Afroz, Suvodip Mukherjee |
| Authors Affiliation: | Tata Institute of Fundamental Research, Mumbai-400005, India |
| Mode of Presentation: | Poster |
| Abstract Category : | Galaxies and Cosmology |
| Abstract : | Gravitational waves (GWs) provide a new avenue to test Einstein’s theory of General Theory of Relativity using the ongoing and upcoming ground-based and space-based detectors. I will discuss a new technique to make a model-independent and data-driven test of the General Theory of Relativity using bright GW sources at the cosmological scales. I will show how the variation of the effective Planck mass with redshift can be tested using a multi-messenger avenue that will be accessible in the coming years. Using the GW candidates such as Binary Neutron Star and Neutron Star Black Hole systems, and by combining with the Baryon Acoustic Oscillation measurement from upcoming galaxy surveys and sound horizon measurement from Cosmic Microwave Background, I will show how percent to a sub-percent precision test of General Theory of Relativity will be possible as a function of cosmic redshift from LIGO, Virgo, and KAGRA and in future from Cosmic Explorer and Einstein Telescope. This new test will discover uncharted territory in fundamental physics at the cosmological scales which are inaccessible from any observations until now. |
