Thin accretion disk images of the black hole in symmergent gravity

Abstract

In this paper, we study circular orbits, effective potential, and thin-accretion disk of a black hole in symmergent gravity within the Novikov-Thorne model in a way including the energy flux and temperature distribution. We determine bounds on symmergent gravity parameters and conclude that the accretion disk could be used as an astrophysical tool to probe symmergent gravity.

Kerr black hole shadows from axion-photon coupling

“…The image features of black holes with extra hairs have been extensively studied [20][21][22][23][24][25], which could provide a way to check no-hair theorem in the strong gravity region. Moreover, the supermassive black hole images have been applied to prob the Lorentz symmetry violation [26][27][28], hunt extra dimensions [29,30], test Loop quantum gravity [31][32][33] and examine other alternative theories [34,35]. The black hole images have also been studied in the Euler-Heisenberg and Bronnikov non-linear electrodynamics models coupled to general relativity [36].…”