2026-06-27T11:09:25Zhttps://docta.ucm.es/rest/oai/requestoai:docta.ucm.es:20.500.14352/44892024-09-05T14:01:40Zcom_20.500.14352_14col_20.500.14352_15
Docta Complutense
author
Guerrero Román, Mercedes
author
Olmo, Gonzalo J.
author
Rubiera García, Diego
author
Sáez Chillón Gómez, Diego
2023-06-16T14:16:39Z
2023-06-16T14:16:39Z
2021-08
1475-7516
10.1088/1475-7516/2021/08/036
https://hdl.handle.net/20.500.14352/4489
http://dx.doi.org/10.1088/1475-7516/2021/08/036
https://iopscience.iop.org/
We study the light rings and shadows of an uniparametric family of spherically symmetric geometries interpolating between the Schwarzschild solution, a regular black hole, and a traversable wormhole, and dubbed as black bounces, all of them sharing the same critical impact parameter. We consider the ray-tracing method in order to study the impact parameter regions corresponding to the direct, lensed, and photon ring emissions, finding a broadening of all these regions for black bounce solutions as compared to the Schwarzschild one. Using this, we determine the optical appearance of black bounces when illuminated by three standard toy models of optically and geometrically thin accretion disks viewed in face-on orientation.
eng
Shadows and optical appearance of black bounces illuminated by a thin accretion disk
journal article
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https://docta.ucm.es/bitstreams/fbd8faa4-f4eb-425f-98a8-8828220c7e2a/download
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Rubiera, D 23 Preprint.pdf
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https://docta.ucm.es/bitstreams/a7811722-4282-47d0-b8e8-f851ec85aef1/download
File
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Rubiera, D 23 Preprint.pdf.txt