Abstract
ABSTRACT
We describe a search for gravitational waves from compact binaries with at least one component with mass $0.2$–$1.0 \, \mathrm{M}_\odot$ and mass ratio q ≥ 0.1 in Advanced Laser Interferometer Gravitational-Wave Observatory (LIGO) and Advanced Virgo data collected between 2019 November 1, 15:00 utc and 2020 March 27, 17:00 utc. No signals were detected. The most significant candidate has a false alarm rate of $0.2 \, \rm {yr}^{-1}$. We estimate the sensitivity of our search over the entirety of Advanced LIGO’s and Advanced Virgo’s third observing run, and present the most stringent limits to date on the merger rate of binary black holes with at least one subsolar-mass component. We use the upper limits to constrain two fiducial scenarios that could produce subsolar-mass black holes: primordial black holes (PBH) and a model of dissipative dark matter. The PBH model uses recent prescriptions for the merger rate of PBH binaries that include a rate suppression factor to effectively account for PBH early binary disruptions. If the PBHs are monochromatically distributed, we can exclude a dark matter fraction in PBHs $f_\mathrm{PBH} \gtrsim \, 0.6$ (at 90 per cent confidence) in the probed subsolar-mass range. However, if we allow for broad PBH mass distributions, we are unable to rule out fPBH = 1. For the dissipative model, where the dark matter has chemistry that allows a small fraction to cool and collapse into black holes, we find an upper bound fDBH < 10−5 on the fraction of atomic dark matter collapsed into black holes.
Funder
National Science Foundation
Science and Technology Facilities Council
Max Planck Society
Australian Research Council
INFN
CNRS
NWO
Council of Scientific and Industrial Research, India
Department of Science and Technology
SERB
Ministry of Human Resource Development
AEI
Ministerio de Ciencia e Innovación
Ministerio de Universidades
CERCA
Generalitat de Catalunya
European Regional Development Fund
Foundation for Polish Science
Swiss National Science Foundation
Russian Foundation for Basic Research
Russian Science Foundation
European Commission
European Social Fund
Royal Society
Scottish Funding Council
Scottish Universities Physics Alliance
LIO
FNRS
FWO
Île-de-France
NKFIH
National Research Foundation of Korea
CFI
ICTP-SAIFR
National Natural Science Foundation of China
Leverhulme Trust
MOST
United States Department of Energy
Kavli Foundation
Charles E. Kaufman Foundation
Pittsburgh Foundation
Penn State Institute for Computational and Data Sciences
MEXT
JSPS
Institute for Cosmic Ray Research, University of Tokyo
NRF
Korea Astronomy and Space Science Institute
Ministry of Science and ICT, South Korea
Academia Sinica
Ministry of Science and Technology
NAOJ
KEK
Publisher
Oxford University Press (OUP)
Subject
Space and Planetary Science,Astronomy and Astrophysics