TY - JOUR
T1 - GW190521 Mass Gap Event and the Primordial Black Hole Scenario
AU - De Luca, V.
AU - Desjacques, Vincent
AU - Franciolini, G.
AU - Pani, P.
AU - Riotto, A.
N1 - Funding Information: Computations were performed at University of Geneva on the Baobab cluster. We acknowledge use of the software package pycbc . V. D. L., G. F., and A. R. are supported by the Swiss National Science Foundation (SNSF), project The Non-Gaussian Universe and Cosmological Symmetries, Project No. 200020-178787. V. D. acknowledges support by the Israel Science Foundation (Grant No. 1395/16). P. P. acknowledges financial support provided under the European Union’s H2020 ERC, Starting Grant Agreement No. DarkGRA–757480, and under the MIUR PRIN and FARE programmes (GW-NEXT, CUP: B84I20000100001), and support from the Amaldi Research Center funded by the MIUR program “Dipartimento di Eccellenza” (CUP: B81I18001170001). Publisher Copyright: © 2021 American Physical Society.
PY - 2021/2/2
Y1 - 2021/2/2
N2 - The LIGO/Virgo Collaboration has recently observed GW190521, the first binary black hole merger with at least the primary component mass in the mass gap predicted by the pair-instability supernova theory. This observation disfavors the standard stellar-origin formation scenario for the heavier black hole, motivating alternative hypotheses. We show that GW190521 cannot be explained within the primordial black hole (PBH) scenario if PBHs do not accrete during their cosmological evolution, since this would require an abundance which is already in tension with current constraints. On the other hand, GW190521 may have a primordial origin if PBHs accrete efficiently before the reionization epoch.
AB - The LIGO/Virgo Collaboration has recently observed GW190521, the first binary black hole merger with at least the primary component mass in the mass gap predicted by the pair-instability supernova theory. This observation disfavors the standard stellar-origin formation scenario for the heavier black hole, motivating alternative hypotheses. We show that GW190521 cannot be explained within the primordial black hole (PBH) scenario if PBHs do not accrete during their cosmological evolution, since this would require an abundance which is already in tension with current constraints. On the other hand, GW190521 may have a primordial origin if PBHs accrete efficiently before the reionization epoch.
UR - https://www.scopus.com/pages/publications/85100965680
U2 - 10.1103/PhysRevLett.126.051101
DO - 10.1103/PhysRevLett.126.051101
M3 - Article
SN - 0031-9007
VL - 126
JO - Physical Review Letters
JF - Physical Review Letters
IS - 5
M1 - 051101
ER -