TY  - JOUR
AU  - Guerrero, M.
AU  - Olmo, G. J.
AU  - Rubiera-Garcia, D.
AU  - Saez-Chillon Gomez, D.
PY  - 2021
DA  - 2021//
TI  - Shadows and optical appearance of black bounces illuminated by a thin accretion disk
T2  - J. Cosmol. Astropart. Phys.
JO  - Journal of Cosmology and Astroparticle Physics
SP  - 036
EP  - 19pp
VL  - 08
IS  - 8
PB  - Iop Publishing Ltd
KW  - GR black holes
KW  - Wormholes
KW  - modified gravity
KW  - accretion
AB  - 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.
SN  - 1475-7516
UR  - https://arxiv.org/abs/2105.15073
UR  - https://doi.org/10.1088/1475-7516/2021/08/036
DO  - 10.1088/1475-7516/2021/08/036
LA  - English
N1  - WOS:000686656000022
ID  - Guerrero_etal2021
ER  -