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.

GW190521 Mass Gap Event and the Primordial Black Hole Scenario / De Luca, V.; Desjacques, V.; Franciolini, G.; Pani, P.; Riotto, A.; De Luca, V.; Desjacques, V.; Franciolini, G.; Pani, P.; Riotto, A.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 126:5(2021). [10.1103/PhysRevLett.126.051101]

GW190521 Mass Gap Event and the Primordial Black Hole Scenario

Franciolini, G.;Pani, P.;
2021

Abstract

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.
2021
black holes, gravitational waves
01 Pubblicazione su rivista::01a Articolo in rivista
GW190521 Mass Gap Event and the Primordial Black Hole Scenario / De Luca, V.; Desjacques, V.; Franciolini, G.; Pani, P.; Riotto, A.; De Luca, V.; Desjacques, V.; Franciolini, G.; Pani, P.; Riotto, A.. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 126:5(2021). [10.1103/PhysRevLett.126.051101]
File allegati a questo prodotto
File Dimensione Formato  
De Luca_GW190521_2021.pdf

accesso aperto

Tipologia: Versione editoriale (versione pubblicata con il layout dell'editore)
Licenza: Tutti i diritti riservati (All rights reserved)
Dimensione 893.18 kB
Formato Adobe PDF
893.18 kB Adobe PDF

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1557809
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 90
  • ???jsp.display-item.citation.isi??? 88
social impact