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 30 ks NuSTAR observation of the stellar-mass black hole in CS 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). Copyright (C) EPLA, 2019
Singularity-free black holes in conformal gravity: New observational constraints
Modesto, Leonardo;
2019-01-01
Abstract
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 30 ks NuSTAR observation of the stellar-mass black hole in CS 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). Copyright (C) EPLA, 2019
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