Binary black hole population properties inferred from the first and second observing runs of advanced LIGO and advanced Virgo
Abbott, B. P. and Angelova, S. V. and Lockerbie, Nicholas and Reid, S., LIGO Scientific Collaboration, Virgo Collaboration (2019) Binary black hole population properties inferred from the first and second observing runs of advanced LIGO and advanced Virgo. Astrophysical Journal Letters, 882 (2). L24. ISSN 2041-8213 (https://doi.org/10.3847/2041-8213/ab3800)
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Abstract
We present results on the mass, spin, and redshift distributions with phenomenological population models using the 10 binary black hole (BBH) mergers detected in the first and second observing runs completed by Advanced LIGO and Advanced Virgo. We constrain properties of the BBH mass spectrum using models with a range of parameterizations of the BBH mass and spin distributions. We find that the mass distribution of the more massive BH in such binaries is well approximated by models with no more than 1% of BHs more massive than 45 M and a power-law index of (90% credibility). We also show that BBHs are unlikely to be composed of BHs with large spins aligned to the orbital angular momentum. Modeling the evolution of the BBH merger rate with redshift, we show that it is flat or increasing with redshift with 93% probability. Marginalizing over uncertainties in the BBH population, we find robust estimates of the BBH merger rate density of R= (90% credibility). As the BBH catalog grows in future observing runs, we expect that uncertainties in the population model parameters will shrink, potentially providing insights into the formation of BHs via supernovae, binary interactions of massive stars, stellar cluster dynamics, and the formation history of BHs across cosmic time.
ORCID iDs
Abbott, B. P., Angelova, S. V., Lockerbie, Nicholas ORCID: https://orcid.org/0000-0002-1678-3260 and Reid, S.;-
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Item type: Article ID code: 70339 Dates: DateEvent9 September 2019Published21 July 2019AcceptedNotes: This research article is multi-authored. Please consult the manuscript for full attribution details. Subjects: Science > Physics Department: Faculty of Engineering > Biomedical Engineering
Faculty of Science > PhysicsDepositing user: Pure Administrator Date deposited: 29 Oct 2019 11:52 Last modified: 08 Oct 2024 16:50 URI: https://strathprints.strath.ac.uk/id/eprint/70339