Do we expect to detect electromagnetic radiation from merging stellarmass black hole binaries like GW150914?
by
Shuang-Nan Zhang(Institute of High-energy physics, Bejing, China)
→
Europe/Rome
Aula Conversi (Dipartimento di Fisica - Ed. G. Marconi)
Aula Conversi
Dipartimento di Fisica - Ed. G. Marconi
Description
> We study whether electromagnetic radiation can be detected from merging stellar mass black hole (BH) binaries like GW150914,
> byinvestigating the possible growth and merging processes of the two stellar mass BHs in the merging event of GW150914
> detected by LIGO, as clocked by a distant external observer. Our main results are: (1) The description of the BH growth using
> stationary metric of a pre-existing BH predicts strong electromagnetic radiation from merging BHs, which is inconsistent with
> GW150914; (2) Only gravitational wave radiation can be produced in the coalescence of two BHs, if the BH growth is described
> using time-dependent metric considering the influence of the in-falling matter onto a pre-existing BH. Future high sensitivity
> detections of gravitational waves from merging BHs might be used to probe matter distribution and space-time geometry in the
> vicinity of the horizon.
>
