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arXiv · 1810.08343

Reply to "Comment on 'Can accretion disk properties observationally distinguish black holes from naked singularities?'"

Zoltán Kovács·Tiberiu Harko·Shahab Shahidi
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Abstract

In the Comment on "Can accretion disk properties observationally distinguish black holes from naked singularities?", by Bertrand Chauvineau, Phys. Rev. D {\bf 98}, 088501 (2018), the author did show that the metric used in Z. Kovács and T. Harko, Phys. Rev. D {\bf 82}, 124047 (2010), and initially introduced in K. D. Krori and D. R. Bhattacharjee, J. Math. Phys. \textbf{23}, 637 (1982) and K. K. Nandi, P. M. Alsing, J. C. Evans, and T. B. Nayak, Phys. Rev. D \textbf{63}, 084027 (2001), does not satisfy the Einstein gravitational field equations with a minimally coupled scalar field. In our reply we would like to point out that this result is actually not new, but it was already published in the literature. Moreover, a rotating solution that generalizes the Kerr metric for a nonminimally coupled scalar field does exist. We briefly discuss the nature of the singularities for the generalized metric, and point out that it can be used as a testing ground to differentiate black holes from naked singularities. We also mention the existence of some other typing or technical errors existing in the literature.

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Zoltán Kovács, Tiberiu Harko, Shahab Shahidi. 2018-10-19. Reply to "Comment on 'Can accretion disk properties observationally distinguish black holes from naked singularities?'". https://doi.org/10.1103/physrevd.98.088502

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