First Measurement of the Hubble Constant from a Dark Standard Siren using the Dark Energy Survey Galaxies and the LIGO/Virgo Binary-Black-hole Merger GW170814


M. Soares-Santos, Brandeis University
A. Palmese, Fermi National Accelerator Laboratory
W. Hartley, University College London
J. Annis, Fermi National Accelerator Laboratory
J. Garcia-Bellido, Universidad Autónoma de Madrid
O. Lahav, University College London
Z. Doctor, The University of Chicago
M. Fishbach, The Kavli Institute for Cosmological Physics
D. E. Holz, The University of Chicago
H. Lin, Fermi National Accelerator Laboratory
M. E.S. Pereira, Brandeis University
A. Garcia, Brandeis University
K. Herner, Fermi National Accelerator Laboratory
R. Kessler, The Kavli Institute for Cosmological Physics
H. V. Peiris, University College London
M. Sako, University of Pennsylvania
S. Allam, Fermi National Accelerator Laboratory
D. Brout, University of Pennsylvania
A. Carnero Rosell, Centro de Investigaciones Energeticas, Medioambientales y Tecnologicas
H. Y. Chen, The University of Chicago
C. Conselice, University of Nottingham
J. Derose, Kavli Institute for Particle Astrophysics and Cosmology
J. Devicente, Centro de Investigaciones Energeticas, Medioambientales y Tecnologicas
H. T. Diehl, Fermi National Accelerator Laboratory
M. S.S. Gill, SLAC National Accelerator Laboratory
J. Gschwend, Laboratório Interinstitucional de e-Astronomia
I. Sevilla-Noarbe, Centro de Investigaciones Energeticas, Medioambientales y Tecnologicas
D. L. Tucker, Fermi National Accelerator Laboratory
R. Wechsler, SLAC National Accelerator Laboratory
E. Berger, Harvard-Smithsonian Center for Astrophysics
P. S. Cowperthwaite, Carnegie Observatories
B. D. Metzger, Columbia University
P. K.G. Williams, Harvard-Smithsonian Center for Astrophysics

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We present a multi-messenger measurement of the Hubble constant H 0 using the binary-black-hole merger GW170814 as a standard siren, combined with a photometric redshift catalog from the Dark Energy Survey (DES). The luminosity distance is obtained from the gravitational wave signal detected by the Laser Interferometer Gravitational-Wave Observatory (LIGO)/Virgo Collaboration (LVC) on 2017 August 14, and the redshift information is provided by the DES Year 3 data. Black hole mergers such as GW170814 are expected to lack bright electromagnetic emission to uniquely identify their host galaxies and build an object-by-object Hubble diagram. However, they are suitable for a statistical measurement, provided that a galaxy catalog of adequate depth and redshift completion is available. Here we present the first Hubble parameter measurement using a black hole merger. Our analysis results in , which is consistent with both SN Ia and cosmic microwave background measurements of the Hubble constant. The quoted 68% credible region comprises 60% of the uniform prior range [20, 140] km s-1 Mpc-1, and it depends on the assumed prior range. If we take a broader prior of [10, 220] km s-1 Mpc-1, we find (57% of the prior range). Although a weak constraint on the Hubble constant from a single event is expected using the dark siren method, a multifold increase in the LVC event rate is anticipated in the coming years and combinations of many sirens will lead to improved constraints on H 0.

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Astrophysical Journal Letters

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