2019/09/30 by Indrani Banerjee, Sumanta Chakraborty, Soumitra SenGupta · 3 citations
Physics and Astronomy · #Artificial intelligence #Astrophysical Phenomena and Observations #Composite material #Computer science #Computer vision #Cosmology and Gravitation Theories #Galaxies: Formation, Evolution, Phenomena #Materials science #Peek #Silhouette #Window (computing) #World Wide Web #astro-ph.HE #gr-qc #hep-th
paper · pdf · doi:10.1103/physrevd.101.041301
published as Phys. Rev. D 101, 041301 (2020) · v3, Published as Rapid Communication in PRD, 16 pages, 6 figures
openalex created_date 2019/09/26 · openalex publication_date 2020/02/07 · arxiv created 2020/02/09 · arxiv updated 2020/02/12 · openalex updated_date 2026/08/05
The recent observation of the shadow of the supermassive black hole M87*, located at the center of the M87 galaxy, by the Event Horizon Telescope Collaboration has opened up a new window to probe the strong gravity regime. In this paper, we explicitly demonstrate the consequences of this observation on brane world black holes, characterized by existence of a negative tidal charge. Our results based on three observables associated with the shadow, namely, angular diameter, deviation from circularity, and axis ratio reveal that the existence of a negative tidal charge is more favored, possibly marking a deviation from general relativity.