TY - JOUR
AU1 - Vieira, Ronaldo S S
AU2 - Kluźniak, Włodek
AB - ABSTRACTA massive naked singularity would be cloaked by accreted matter, and thus may appear to a distant observer as an opaque (quasi-)spherical surface of a fluid, not unlike that of a star or planet. We present here analytical solutions for levitating atmospheres around a wide class of spherically symmetric naked singularities. Such an atmosphere can be constructed in every space–time which possesses a zero-gravity radius and which is a solution of a (modified-)gravity theory possessing the usual conservation laws for matter. Its density peaks at the zero-gravity radius and the atmospheric fluid is supported against infall onto the singularity by gravity alone. In an astrophysical context, an opaque atmosphere would be formed in a very short time by accretion of ambient matter onto the singularity – in a millisecond for an X-ray binary, in a thousand seconds for a singularity traversing interstellar space, and a thousand years for a singularity that is the central engine of an AGN.
TI - Astrophysical cloaking of a naked singularity
JF - Monthly Notices of the Royal Astronomical Society
DO - 10.1093/mnras/stad1718
DA - 2023-06-09
UR - https://www.deepdyve.com/lp/oxford-university-press/astrophysical-cloaking-of-a-naked-singularity-LBlVj85JZi
SP - 4615
EP - 4623
VL - 523
IS - 3
DP - DeepDyve
ER -