Analysis of the subsolar-mass black hole candidate SSM200308 from the second part of the third observing run of Advanced LIGO-Virgo

A follow-up of a subsolar black hole candidate identified in the second part of the third observing run of the LIGO-Virgo-KAGRA collaboration is carried out. With a search signal-to-noise ratio of \(8.90\) and a false-alarm rate of 1 per 5 years, close to the usual thresholds for claiming a gravitat...

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Main Authors Prunier, Marine, Morrás, Gonzalo, Nuño Siles, José Francisco, Clesse, Sebastien, García-Bellido, Juan, Ester Ruiz Morales
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 23.09.2024
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Abstract A follow-up of a subsolar black hole candidate identified in the second part of the third observing run of the LIGO-Virgo-KAGRA collaboration is carried out. With a search signal-to-noise ratio of \(8.90\) and a false-alarm rate of 1 per 5 years, close to the usual thresholds for claiming a gravitational-wave event, we cannot exclude a noise origin. A complete Bayesian parameter estimation of this candidate, denoted SSM200308, reveals that if the signal originates from a compact binary coalescence, the component masses are \(m_1= 0.62^{+0.46}_{-0.20} M_{\odot}\) and \(m_2 = 0.27^{+0.12}_{-0.10} M_{\odot}\) (90% credible intervals) with at least one component being firmly subsolar, below the minimum mass of a neutron star. This discards the hypothesis that the signal comes from a standard binary neutron star. The signal coherence test between the two LIGO detectors brings support to a compact object coalescence origin.
AbstractList A follow-up of a subsolar black hole candidate identified in the second part of the third observing run of the LIGO-Virgo-KAGRA collaboration is carried out. With a search signal-to-noise ratio of \(8.90\) and a false-alarm rate of 1 per 5 years, close to the usual thresholds for claiming a gravitational-wave event, we cannot exclude a noise origin. A complete Bayesian parameter estimation of this candidate, denoted SSM200308, reveals that if the signal originates from a compact binary coalescence, the component masses are \(m_1= 0.62^{+0.46}_{-0.20} M_{\odot}\) and \(m_2 = 0.27^{+0.12}_{-0.10} M_{\odot}\) (90% credible intervals) with at least one component being firmly subsolar, below the minimum mass of a neutron star. This discards the hypothesis that the signal comes from a standard binary neutron star. The signal coherence test between the two LIGO detectors brings support to a compact object coalescence origin.
Physics of the Dark Universe, Volume 46, December 2024, 101582 A follow-up of a subsolar black hole candidate identified in the second part of the third observing run of the LIGO-Virgo-KAGRA collaboration is carried out. With a search signal-to-noise ratio of $8.90$ and a false-alarm rate of 1 per 5 years, close to the usual thresholds for claiming a gravitational-wave event, we cannot exclude a noise origin. A complete Bayesian parameter estimation of this candidate, denoted SSM200308, reveals that if the signal originates from a compact binary coalescence, the component masses are $m_1= 0.62^{+0.46}_{-0.20} M_{\odot}$ and $m_2 = 0.27^{+0.12}_{-0.10} M_{\odot}$ (90% credible intervals) with at least one component being firmly subsolar, below the minimum mass of a neutron star. This discards the hypothesis that the signal comes from a standard binary neutron star. The signal coherence test between the two LIGO detectors brings support to a compact object coalescence origin.
Author Morrás, Gonzalo
García-Bellido, Juan
Ester Ruiz Morales
Prunier, Marine
Nuño Siles, José Francisco
Clesse, Sebastien
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BackLink https://doi.org/10.48550/arXiv.2311.16085$$DView paper in arXiv
https://doi.org/10.1016/j.dark.2024.101582$$DView published paper (Access to full text may be restricted)
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Snippet A follow-up of a subsolar black hole candidate identified in the second part of the third observing run of the LIGO-Virgo-KAGRA collaboration is carried out....
Physics of the Dark Universe, Volume 46, December 2024, 101582 A follow-up of a subsolar black hole candidate identified in the second part of the third...
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SubjectTerms Binary stars
Black holes
False alarms
Gravitational waves
Neutron stars
Parameter estimation
Physics - Cosmology and Nongalactic Astrophysics
Physics - General Relativity and Quantum Cosmology
Signal to noise ratio
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Title Analysis of the subsolar-mass black hole candidate SSM200308 from the second part of the third observing run of Advanced LIGO-Virgo
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