Could the 2.6 M⊙ object in GW190814 be a primordial black hole?
| Autor: | Kyriakos Vattis, Isabelle S. Goldstein, Savvas M. Koushiappas |
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| Rok vydání: | 2020 |
| Předmět: | |
| Zdroj: | Physical Review D. 102 |
| ISSN: | 2470-0029 2470-0010 |
| DOI: | 10.1103/physrevd.102.061301 |
| Popis: | On June 20, 2020, the LIGO-Virgo collaboration announced the discovery of GW190814, a gravitational wave event originating from a binary system merger between a black hole of mass ${M}_{1}={23.2}_{\ensuremath{-}1.0}^{+1.1}\text{ }\text{ }{M}_{\ensuremath{\bigodot}}$ and an unidentified object with a mass of ${M}_{2}=2.5{9}_{\ensuremath{-}0.09}^{+0.08}\text{ }\text{ }{M}_{\ensuremath{\bigodot}}$. This second object would be either the heaviest neutron star or lightest black hole observed to date. Here we investigate the possibility of the $\ensuremath{\sim}2.6\text{ }\text{ }{M}_{\ensuremath{\bigodot}}$ object being a primordial black hole (PBH). We find that a primordial black hole explanation to GW190814 is unlikely as it is limited by the formation rate of the primary stellar progenitor and the time available for a pair of primordial- and stellar-origin black hole binaries to form and merge within a hubble time. |
| Databáze: | OpenAIRE |
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