{
  "id": "2008.07420",
  "version": "v1",
  "published": "2020-08-17T15:44:14.000Z",
  "updated": "2020-08-17T15:44:14.000Z",
  "title": "Measuring the Hubble Constant with a sample of kilonovae",
  "authors": [
    "Michael W. Coughlin",
    "Sarah Antier",
    "Tim Dietrich",
    "Ryan J. Foley",
    "Jack Heinzel",
    "Mattia Bulla",
    "Nelson Christensen",
    "David A. Coulter",
    "Lina Issa",
    "Nandita Khetan"
  ],
  "doi": "10.1038/s41467-020-17998-5",
  "categories": [
    "astro-ph.HE",
    "astro-ph.CO",
    "gr-qc"
  ],
  "abstract": "Kilonovae produced by the coalescence of compact binaries with at least one neutron star are promising standard sirens for an independent measurement of the Hubble constant ($H_0$). Through their detection via follow-up of gravitational-wave (GW), short gamma-ray bursts (sGRBs) or optical surveys, a large sample of kilonovae (even without GW data) can be used for $H_0$ contraints. Here, we show measurement of $H_0$ using light curves associated with four sGRBs, assuming these are attributable to kilonovae, combined with GW170817. Including a systematic uncertainty on the models that is as large as the statistical ones, we find $H_0 = 73.8^{+6.3}_{-5.8}$\\,$\\mathrm{km}$ $\\mathrm{s}^{-1}$ $\\mathrm{Mpc}^{-1}$ and $H_0 = 71.2^{+3.2}_{-3.1}$\\,$\\mathrm{km}$ $\\mathrm{s}^{-1}$ $\\mathrm{Mpc}^{-1}$ for two different kilonova models that are consistent with the local and inverse-distance ladder measurements. For a given model, this measurement is about a factor of 2-3 more precise than the standard-siren measurement for GW170817 using only GWs.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2020-08-17T15:44:14.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "hubble constant",
      "inverse-distance ladder measurements",
      "short gamma-ray bursts",
      "kilonova models",
      "promising standard sirens"
    ],
    "tags": [
      "journal article"
    ],
    "publication": {
      "publisher": "Nature"
    },
    "note": {
      "typesetting": "TeX",
      "pages": 0,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}