Black hole shadow and Wandering null geodesics
General Relativity and Quantum Cosmology
2022-08-31 v2
Abstract
The role of the wandering null geodesic is studied in a black hole spacetime. Based on the continuity of the solution of the geodesic equation, the wandering null geodesics commonly exist and explain the typical phenomena of the optical observation of event horizons. Moreover, a new concept of `black room' is investigated to relate the wandering null geodesic to the black hole shadow more closely.
Cite
@article{arxiv.2107.06551,
title = {Black hole shadow and Wandering null geodesics},
author = {Masaru Siino},
journal= {arXiv preprint arXiv:2107.06551},
year = {2022}
}
Comments
15 pages, 3figures, One of main results (prop.2) has been corrected. Some inappropriate sentences are removed