Observations of Orbiting Hot Spots around Naked Singularities
Abstract
Recently, it has been reported that photons can traverse naked singularities in the Janis-Newman-Winicour and Born-Infeld spacetimes when these singularities are appropriately regularized. In this paper, we investigate observational signatures of hot spots orbiting these naked singularities, with a focus on discerning them from black holes. In contrast to Schwarzschild black holes, we unveil the presence of multiple additional image tracks within critical curves in time integrated images capturing a complete orbit of hot spots. Moreover, these new images manifest as a more pronounced second-highest peak in temporal magnitudes when observed at low inclinations.
Keywords
Cite
@article{arxiv.2309.04157,
title = {Observations of Orbiting Hot Spots around Naked Singularities},
author = {Yiqian Chen and Peng Wang and Haitang Yang},
journal= {arXiv preprint arXiv:2309.04157},
year = {2023}
}
Comments
24 pages, 6 figures, and 3 animated images of intensity for ancillary. References added and typo corrected