Please use this identifier to cite or link to this item: http://dr.iiserpune.ac.in:8080/xmlui/handle/123456789/8699
Title: Constraints on the Cosmic Expansion History from GWTC–3
Authors: LIGO Scientific Collaboration
Virgo Collaboration
KAGRA Collaboration
Abbott, R.
SOURADEEP, T. et al.
Dept. of Physics
Keywords: Physics
2023
Issue Date: Jun-2023
Publisher: IOP Publishing
Citation: Astrophysical Journal, 949(02).
Abstract: We use 47 gravitational wave sources from the Third LIGO–Virgo–Kamioka Gravitational Wave Detector Gravitational Wave Transient Catalog (GWTC–3) to estimate the Hubble parameter H(z), including its current value, the Hubble constant H0. Each gravitational wave (GW) signal provides the luminosity distance to the source, and we estimate the corresponding redshift using two methods: the redshifted masses and a galaxy catalog. Using the binary black hole (BBH) redshifted masses, we simultaneously infer the source mass distribution and H(z). The source mass distribution displays a peak around 34 M⊙, followed by a drop-off. Assuming this mass scale does not evolve with the redshift results in a H(z) measurement, yielding
URI: https://doi.org/10.3847/1538-4357/ac74bb
http://dr.iiserpune.ac.in:8080/xmlui/handle/123456789/8699
ISSN: 1538-4357
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