> Detailanzeige

Soares-Santos, M.; Palmese, A.; Hartley, W.; Annis, J.; Garcia-Bellido, J.; Lahav, O.; Doctor, Z.; Fishbach, M.; Holz, D. E.; Lin, H.; Pereira, M. E. S.; Garcia, A.; Herner, K.; Kessler, R.; Peiris, H. V.; Sako, M.; Allam, S.; Brout, D.; Rosell, A. Carnero; Chen, H. Y.; Conselice, C.; deRose, J.; deVicente, J.; Diehl, H. T.; [...]

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

Literatur-
verwaltung

Zur
Merkliste

Lösche von
Merkliste

Per Whatsapp teilen

Schließen

Merkliste



Sie können Bookmarks mittels Listen verwalten, loggen Sie sich dafür bitte in Ihr SLUB Benutzerkonto ein.
  • Medientyp: E-Artikel
  • Titel: 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
  • Beteiligte: Soares-Santos, M.; Palmese, A.; Hartley, W.; Annis, J.; Garcia-Bellido, J.; Lahav, O.; Doctor, Z.; Fishbach, M.; Holz, D. E.; Lin, H.; Pereira, M. E. S.; Garcia, A.; Herner, K.; Kessler, R.; Peiris, H. V.; Sako, M.; Allam, S.; Brout, D.; Rosell, A. Carnero; Chen, H. Y.; Conselice, C.; deRose, J.; deVicente, J.; Diehl, H. T.; [...]
  • Erschienen: American Astronomical Society, 2019
  • Erschienen in: The Astrophysical Journal Letters
  • Sprache: Nicht zu entscheiden
  • DOI: 10.3847/2041-8213/ab14f1
  • ISSN: 2041-8205; 2041-8213
  • Entstehung:
  • Anmerkungen:
  • Beschreibung: <jats:title>Abstract</jats:title> <jats:p>We present a multi-messenger measurement of the Hubble constant <jats:italic>H</jats:italic> <jats:sub>0</jats:sub> 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 <jats:inline-formula> <jats:tex-math> <?CDATA ${H}_{0}={75}_{-32}^{+40}\,\mathrm{km}\,{{\rm{s}}}^{-1}\,{\mathrm{Mpc}}^{-1}$?> </jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="apjlab14f1ieqn1.gif" xlink:type="simple" /> </jats:inline-formula>, 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<jats:sup>−1</jats:sup> Mpc<jats:sup>−1</jats:sup>, and it depends on the assumed prior range. If we take a broader prior of [10, 220] km s<jats:sup>−1</jats:sup> Mpc<jats:sup>−1</jats:sup>, we find <jats:inline-formula> <jats:tex-math> <?CDATA ${H}_{0}={78}_{-24}^{+96}\,\mathrm{km}\,{{\rm{s}}}^{-1}\,{\mathrm{Mpc}}^{-1}$?> </jats:tex-math> <jats:inline-graphic xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="apjlab14f1ieqn2.gif" xlink:type="simple" /> </jats:inline-formula> (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 <jats:italic>H</jats:italic> <jats:sub>0</jats:sub>.</jats:p>
  • Zugangsstatus: Freier Zugang