Binary black hole population properties inferred from the first and second observing runs of advanced LIGO and advanced Virgo

B. P. Abbott, S. V. Angelova, Nicholas Lockerbie, S. Reid, LIGO Scientific Collaboration, Virgo Collaboration

Research output: Contribution to journalArticle

9 Citations (Scopus)

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.

LanguageEnglish
Article numberL24
Number of pages30
JournalAstrophysical Journal Letters
Volume882
Issue number2
DOIs
Publication statusPublished - 9 Sep 2019

Fingerprint

LIGO (observatory)
merger
mass distribution
angular momentum
parameterization
power law
massive stars
mass spectra
history
catalogs
supernovae
modeling
distribution
histories
orbitals
estimates
rate

Keywords

  • LIGO
  • intermediate mass black hole binaries
  • IMBHBs
  • gravitational waves

Cite this

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title = "Binary black hole population properties inferred from the first and second observing runs of advanced LIGO and advanced Virgo",
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.",
keywords = "LIGO, intermediate mass black hole binaries, IMBHBs, gravitational waves",
author = "Abbott, {B. P.} and Angelova, {S. V.} and Nicholas Lockerbie and S. Reid and {LIGO Scientific Collaboration} and {Virgo Collaboration}",
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year = "2019",
month = "9",
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doi = "10.3847/2041-8213/ab3800",
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Binary black hole population properties inferred from the first and second observing runs of advanced LIGO and advanced Virgo. / Abbott, B. P.; Angelova, S. V.; Lockerbie, Nicholas; Reid, S.; LIGO Scientific Collaboration; Virgo Collaboration.

In: Astrophysical Journal Letters, Vol. 882, No. 2, L24, 09.09.2019.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Binary black hole population properties inferred from the first and second observing runs of advanced LIGO and advanced Virgo

AU - Abbott, B. P.

AU - Angelova, S. V.

AU - Lockerbie, Nicholas

AU - Reid, S.

AU - LIGO Scientific Collaboration

AU - Virgo Collaboration

N1 - This research article is multi-authored. Please consult the manuscript for full attribution details.

PY - 2019/9/9

Y1 - 2019/9/9

N2 - 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.

AB - 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.

KW - LIGO

KW - intermediate mass black hole binaries

KW - IMBHBs

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