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Stochastic Gravitational-wave Background from Binary Black Holes and Binary Neutron Stars and Implications for LISA

The Astrophysical journal, 2019-01, Vol.871 (1), p.97 [Peer Reviewed Journal]

2019. The American Astronomical Society. All rights reserved. ;Copyright IOP Publishing Jan 20, 2019 ;ISSN: 0004-637X ;EISSN: 1538-4357 ;DOI: 10.3847/1538-4357/aaf581

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  • Title:
    Stochastic Gravitational-wave Background from Binary Black Holes and Binary Neutron Stars and Implications for LISA
  • Author: Chen, Zu-Cheng ; Huang, Fan ; Huang, Qing-Guo
  • Subjects: Astronomy ; Binary stars ; Black holes ; Gravitation ; Gravitational waves ; instrumentation: detectors ; Interferometers ; Lasers ; LISA (antenna) ; methods: data analysis ; Neutron stars ; Neutrons ; Noise ; Progenitors (astrophysics) ; Red shift ; stars: black holes ; stars: neutron
  • Is Part Of: The Astrophysical journal, 2019-01, Vol.871 (1), p.97
  • Description: The advent of gravitational-wave and multimessenger astronomy has stimulated research on the formation mechanisms of binary black holes (BBHs) observed by the Laser Interferometer Gravitational-Wave Observatory (LIGO)/Virgo. In the literature, the progenitors of these BBHs could be stellar-origin black holes (sBHs) or primordial black holes (PBHs). In this paper, we calculate the stochastic gravitational-wave background (SGWB) from BBHs, covering the astrophysical and primordial scenarios separately, together with the one from binary neutron stars (BNSs). Our results indicate that PBHs contribute a stronger SGWB than that from sBHs, and the total SGWB from both BBHs and BNSs has a high possibility of being detected by the future observing runs of LIGO/Virgo and the Laser Interferometer Space Antenna (LISA). On the other hand, the SGWB from BBHs and BNSs also contributes an additional source of confusion noise to LISA's total noise curve, and then weakens LISA's detection abilities. For instance, the detection of massive black hole binary (MBHB) coalescences is one of the key missions of LISA, and the largest detectable redshift of MBHB mergers can be significantly reduced.
  • Publisher: Philadelphia: The American Astronomical Society
  • Language: English
  • Identifier: ISSN: 0004-637X
    EISSN: 1538-4357
    DOI: 10.3847/1538-4357/aaf581
  • Source: Alma/SFX Local Collection
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