Superradiant instabilities can trigger the formation of bosonic clouds around rotating black holes. If the bosonic field growth is sufficiently fast, these clouds could form shortly after a binary black hole merger. Such clouds are continuous sources of gravitational waves whose detection (or lack thereof) can probe the existence of ultralight bosons (such as axionlike particles) and their properties. Motivated by the binary black hole mergers seen by Advanced LIGO so far, we investigate in detail the parameter space that can be probed with continuous gravitational wave signals from ultralight scalar field clouds around black hole merger remnants with particular focus on future ground-based detectors (A+, Voyager and Cosmic Explorer). We also study the impact that the confusion noise from a putative stochastic gravitational-wave background from unresolved sources would have on such searches and we estimate, under different astrophysical priors, the number of binary black hole merger events that could lead to an observable postmerger signal. Under our most optimistic assumptions, Cosmic Explorer could detect dozens of postmerger signals.

Follow-up signals from superradiant instabilities of black hole merger remnants / Ghosh, S.; Berti, E.; PIRES BRITO, Richard; Richartz, M.. - In: PHYSICAL REVIEW D. - ISSN 2470-0010. - 99:10(2019). [10.1103/PhysRevD.99.104030]

Follow-up signals from superradiant instabilities of black hole merger remnants

PIRES BRITO, RICHARD;
2019

Abstract

Superradiant instabilities can trigger the formation of bosonic clouds around rotating black holes. If the bosonic field growth is sufficiently fast, these clouds could form shortly after a binary black hole merger. Such clouds are continuous sources of gravitational waves whose detection (or lack thereof) can probe the existence of ultralight bosons (such as axionlike particles) and their properties. Motivated by the binary black hole mergers seen by Advanced LIGO so far, we investigate in detail the parameter space that can be probed with continuous gravitational wave signals from ultralight scalar field clouds around black hole merger remnants with particular focus on future ground-based detectors (A+, Voyager and Cosmic Explorer). We also study the impact that the confusion noise from a putative stochastic gravitational-wave background from unresolved sources would have on such searches and we estimate, under different astrophysical priors, the number of binary black hole merger events that could lead to an observable postmerger signal. Under our most optimistic assumptions, Cosmic Explorer could detect dozens of postmerger signals.
2019
Superradiant instabilities, gravitational waves, ultralight bosons
01 Pubblicazione su rivista::01a Articolo in rivista
Follow-up signals from superradiant instabilities of black hole merger remnants / Ghosh, S.; Berti, E.; PIRES BRITO, Richard; Richartz, M.. - In: PHYSICAL REVIEW D. - ISSN 2470-0010. - 99:10(2019). [10.1103/PhysRevD.99.104030]
File allegati a questo prodotto
File Dimensione Formato  
Ghosh_followup_2019.pdf

solo gestori archivio

Tipologia: Versione editoriale (versione pubblicata con il layout dell'editore)
Licenza: Tutti i diritti riservati (All rights reserved)
Dimensione 588.68 kB
Formato Adobe PDF
588.68 kB Adobe PDF   Contatta l'autore

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/11573/1284537
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 33
  • ???jsp.display-item.citation.isi??? 31
social impact