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arXiv · 2003.03738

Singularity-free black holes in conformal gravity: new observational constraints

Menglei Zhou·Askar B. Abdikamalov·Dimitry Ayzenberg·Cosimo Bambi·Leonardo Modesto·Sourabh Nampalliwar·Yerong Xu
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Abstract

We consider the family of singularity-free rotating black hole solutions in Einstein's conformal gravity found in Bambi, Modesto & Rachwal (2017) and we constrain the value of the conformal parameter $L$ from the analysis of a 30 ks NuSTAR observation of the stellar-mass black hole in GS 1354-645 during its outburst in 2015. Our new constraint is much stronger than that found in previous work. Here we obtain $L/M < 0.12$ (99% confidence level, statistical uncertainty only).

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Menglei Zhou, Askar B. Abdikamalov, Dimitry Ayzenberg, Cosimo Bambi, Leonardo Modesto, Sourabh Nampalliwar, Yerong Xu. 2020-03-08. Singularity-free black holes in conformal gravity: new observational constraints. https://doi.org/10.1209/0295-5075/125/30002

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