| Issue |
EPL
Volume 125, Number 3, February 2019
|
|
|---|---|---|
| Article Number | 30002 | |
| Number of page(s) | 6 | |
| Section | General | |
| DOI | https://doi.org/10.1209/0295-5075/125/30002 | |
| Published online | 26 February 2019 | |
Singularity-free black holes in conformal gravity: New observational constraints
1 Center for Field Theory and Particle Physics and Department of Physics, Fudan University 200438 Shanghai, China
2 Theoretical Astrophysics, Eberhard-Karls Universität Tübingen - 72076 Tübingen, Germany
3 Department of Physics, Southern University of Science and Technology (SUSTech) - Shenzhen 518055, China
(a) bambi@fudan.edu.cn (corresponding author)
Received: 21 November 2018
Accepted: 24 January 2019
We consider the family of singularity-free rotating black hole solutions in Einstein's conformal gravity found in Bambi C. et al., JCAP, 05 (2017) 003 and we constrain the value of the conformal parameter L from the analysis of a 
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 
(99% confidence level, statistical uncertainty only).
PACS: 04.80.Cc – Experimental tests of gravitational theories / 04.25.dg – Numerical studies of black holes and black-hole binaries
© EPLA, 2019
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