%0 Generic %1 hutsi2021cosmological %A Hütsi, Gert %A Koivisto, Tomi %A Raidal, Martti %A Vaskonen, Ville %A Veermäe, Hardi %D 2021 %K tifr %T Cosmological black holes are not described by the Thakurta metric: LIGO-Virgo bounds on PBHs remain unchanged %U http://arxiv.org/abs/2105.09328 %X We show that the physical conditions which induce the Thakurta metric, recently studied by Boehm et al. in the context of time-dependent black hole masses, correspond to a single accreting black hole in the entire Universe filled with isotropic non-interacting dust. In such a case, the physics of black hole accretion is not local but tied to the properties of the entire Universe. Any density fluctuation or interaction would destroy such a picture. We do not know any realistic physical example where such conditions can be realized. In particular, this solution does not apply to black hole binaries. As cosmological black holes and their mass growth via accretion are not described by the Thakurta metric, constraints on the primordial black hole abundance from the LIGO-Virgo and the CMB measurements remain valid.

@misc{hutsi2021cosmological, abstract = {We show that the physical conditions which induce the Thakurta metric, recently studied by Boehm et al. in the context of time-dependent black hole masses, correspond to a single accreting black hole in the entire Universe filled with isotropic non-interacting dust. In such a case, the physics of black hole accretion is not local but tied to the properties of the entire Universe. Any density fluctuation or interaction would destroy such a picture. We do not know any realistic physical example where such conditions can be realized. In particular, this solution does not apply to black hole binaries. As cosmological black holes and their mass growth via accretion are not described by the Thakurta metric, constraints on the primordial black hole abundance from the LIGO-Virgo and the CMB measurements remain valid.}, added-at = {2021-05-21T09:35:55.000+0200}, author = {Hütsi, Gert and Koivisto, Tomi and Raidal, Martti and Vaskonen, Ville and Veermäe, Hardi}, biburl = {https://www.bibsonomy.org/bibtex/269d4eec4633ea3280c0370274a962745/citekhatri}, description = {Cosmological black holes are not described by the Thakurta metric: LIGO-Virgo bounds on PBHs remain unchanged}, interhash = {c41ca17cb158beaeaa1db12a1768de9a}, intrahash = {69d4eec4633ea3280c0370274a962745}, keywords = {tifr}, note = {cite arxiv:2105.09328Comment: 5 pages, 1 figure}, timestamp = {2021-05-21T09:35:55.000+0200}, title = {Cosmological black holes are not described by the Thakurta metric: LIGO-Virgo bounds on PBHs remain unchanged}, url = {http://arxiv.org/abs/2105.09328}, year = 2021 }