Abstract Details
| Name: Shantanu Desai Affiliation: IIT Hyderabad Conference ID: ASI2018_1569 Title : Limit on graviton mass from galaxy cluster Abell 1689 Authors and Co-Authors : None Abstract Type : Contributed Talk Abstract Category : General Relativity and Cosmology Abstract : To obtain a limit on the mass of graviton using galaxy clusters, we use dynamical mass models of the Abell 1689 (A1689) galaxy cluster to check their compatibility with a Yukawa gravitational potential. We assume mass models for the gas, dark matter, and galaxies for A1689 from arXiv:1703.10219 and arXiv:1610.01543, who used this cluster to test various alternate gravity theories, which dispense with the need for dark matter. We quantify the deviations in the acceleration profile using these mass models, assuming a Yukawa potential and that obtained assuming a Newtonian potential, by calculating the chi-square residuals between the two profiles. We obtain a 90% cl. upper limit on mass of graviton to be 1.64e-29 eV. |