A Statistical Standard Siren Measurement of the Hubble Constant from the LIGO/Virgo Gravitational Wave Compact Object Merger GW190814 and Dark Energy Survey Galaxies

Palmese, A. and deVicente, J. and Pereira, M. E. S. and Annis, J. and Hartley, W. and Herner, K. and Soares-Santos, M. and Crocce, M. and Huterer, D. and Magaña Hernandez, I. and Garcia, A. and Garcia-Bellido, J. and Gschwend, J. and Holz, D. E. and Kessler, R. and Lahav, O. and Morgan, R. and Nicolaou, C. and Conselice, C. and Foley, R. J. and Gill, M. S. S. and Abbott, T. M. C. and Aguena, M. and Allam, S. and Avila, S. and Bechtol, K. and Bertin, E. and Bhargava, S. and Brooks, D. and Buckley-Geer, E. and Burke, D. L. and Kind, M. Carrasco and Carretero, J. and Castander, F. J. and Chang, C. and Costanzi, M. and Costa, L. N. da and Davis, T. M. and Desai, S. and Diehl, H. T. and Doel, P. and Drlica-Wagner, A. and Estrada, J. and Everett, S. and Evrard, A. E. and Fernandez, E. and Finley, D. A. and Flaugher, B. and Fosalba, P. and Frieman, J. and Gaztanaga, E. and Gerdes, D. W. and Gruen, D. and Gruendl, R. A. and Gutierrez, G. and Hinton, S. R. and Hollowood, D. L. and Honscheid, K. and James, D. J. and Kent, S. and Krause, E. and Kuehn, K. and Lin, H. and Maia, M. A. G. and March, M. and Marshall, J. L. and Melchior, P. and Menanteau, F. and Miquel, R. and Ogando, R. L. C. and Paz-Chinchón, F. and Plazas, A. A. and Roodman, A. and Sako, M. and Sanchez, E. and Scarpine, V. and Schubnell, M. and Serrano, S. and Sevilla-Noarbe, I. and Smith, J. Allyn. and Smith, M. and Suchyta, E. and Tarle, G. and Troxel, M. A. and Tucker, D. L. and Walker, A. R. and Wester, W. and Wilkinson, R. D. and Zuntz, J. (2020) A Statistical Standard Siren Measurement of the Hubble Constant from the LIGO/Virgo Gravitational Wave Compact Object Merger GW190814 and Dark Energy Survey Galaxies. The Astrophysical Journal, 900 (2). L33. ISSN 2041-8213

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Abstract

We present a measurement of the Hubble constant H0 using the gravitational wave (GW) event GW190814, which resulted from the coalescence of a 23 M⊙ black hole with a 2.6 M⊙ compact object, as a standard siren. No compelling electromagnetic counterpart has been identified for this event; thus our analysis accounts for thousands of potential host galaxies within a statistical framework. The redshift information is obtained from the photometric redshift (photo-z) catalog from the Dark Energy Survey. The luminosity distance is provided by the LIGO/Virgo gravitational wave sky map. Since this GW event has the second-smallest localization volume after GW170817, GW190814 is likely to provide the best constraint on cosmology from a single standard siren without identifying an electromagnetic counterpart. Our analysis uses photo-z probability distribution functions and corrects for photo-z biases. We also reanalyze the binary black hole GW170814 within this updated framework. We explore how our findings impact the H0 constraints from GW170817, the only GW merger associated with a unique host galaxy. From a combination of GW190814, GW170814, and GW170817, our analysis yields ${H}_{0}={72.0}_{-8.2}^{+12}\,\mathrm{km}\,{{\rm{s}}}^{-1}\,{\mathrm{Mpc}}^{-1}$(68% highest-density interval, HDI) for a prior in H0 uniform between $[20\mathrm{and}140]\,\mathrm{km}\,{{\rm{s}}}^{-1}\,{\mathrm{Mpc}}^{-1}$. The addition of GW190814 and GW170814 to GW170817 improves the 68% HDI from GW170817 alone by ∼18%, showing how well-localized mergers without counterparts can provide a significant contribution to standard siren measurements, provided that a complete galaxy catalog is available at the location of the event.

Item Type: Article
Subjects: Pustaka Library > Physics and Astronomy
Depositing User: Unnamed user with email support@pustakalibrary.com
Date Deposited: 20 May 2023 06:42
Last Modified: 23 Jan 2024 04:44
URI: http://archive.bionaturalists.in/id/eprint/937

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