https://doi.org/10.1140/epjp/s13360-023-04384-5
Regular Article
Photonsphere, shadow, quasinormal modes, and greybody bounds of non-rotating Simpson–Visser black hole
Chandernagore College, Chandernagore, Hooghly, West Bengal, India
Received:
18
May
2023
Accepted:
16
August
2023
Published online:
26
August
2023
In this manuscript, we study photonsphere, shadow, quasinormal modes, Hawking temperature, and greybody bounds of a non-rotating Simpson–Visser black hole which is a regular black hole. We observe that though the radius of the photonsphere does depend on the Simpson–Visser parameter 
, the shadow radius is independent of it. The shadow radius is found to be equal to that for Schwarzschild black hole. We, then, study quasinormal frequencies of the Simpson–Visser black hole for scalar and electromagnetic perturbations with the help of 6th-order WKB method. We tabulate values of quasinormal frequencies for various values of , angular momentum 
, and overtone number n. We also graphically show the dependence of real and imaginary parts of quasinormal frequency on and . Additionally, We study the convergence of the WKB method for various values of pair 
. Finally, we shed light on the dependence of the Hawking temperature on the parameter and the dependence of greybody bounds on and .
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© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2023. Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
