Speaker
Zaryab Ahmed
(Universitetet i Stavanger)
Description
According to the black hole no-hair theorem, the emitted ringdown spectra are constrained by the mass and spin of the remnant black hole and thus offer an excellent test of the Kerr-nature of black holes. As a parameterization of beyond-Kerr effects, we employ the Johannsen-Psaltis metric ansatz and analyze the ringdown of two binary black hole merger events- GW150914 and GW190521 to constrain the deviation from Kerr. We find improvement in constraints on the deviation parameter in the case of GW190521 as compared to GW150914.
Primary author
Zaryab Ahmed
(Universitetet i Stavanger)
