{
  "id": "2205.09145",
  "version": "v1",
  "published": "2022-05-18T18:01:23.000Z",
  "updated": "2022-05-18T18:01:23.000Z",
  "title": "Multi-messenger constraints on the Hubble constant through combination of gravitational waves, gamma-ray bursts and kilonovae from neutron star mergers",
  "authors": [
    "Mattia Bulla",
    "Michael W. Coughlin",
    "Suhail Dhawan",
    "Tim Dietrich"
  ],
  "comment": "invited review accepted for publication in the journal Universe as part of the special issue 'Gamma-Ray Bursts: Observational and Theoretical Prospects in the Era of Multi-Messenger Astronomy', 23 pages, 3 figures, 1 table",
  "categories": [
    "astro-ph.HE",
    "astro-ph.CO"
  ],
  "abstract": "The simultaneous detection of gravitational waves and light from the binary neutron star merger GW170817 led to independent measurements of distance and redshift, providing a direct estimate of the Hubble constant $H_0$ that does not rely on a cosmic distance ladder nor assumes a specific cosmological model. By using gravitational waves as ''standard sirens'', this approach holds promise to arbitrate the existing tension between the $H_0$ value inferred from the cosmic microwave background and those obtained from local measurements. However, the known degeneracy in the gravitational-wave analysis between distance and inclination of the source lead to a $H_0$ value from GW170817 that was not precise enough to resolve the existing tension. In this review, we summarize recent works exploiting the viewing-angle dependence of the electromagnetic signal, namely the associated short gamma-ray burst and kilonova, to constrain the system inclination and improve on $H_0$. We outline the key ingredients of the different methods, summarize the results obtained in the aftermath of GW170817 and discuss the possible systematics introduced by each of these methods.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2022-05-18T18:01:23.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "gravitational waves",
      "gamma-ray burst",
      "hubble constant",
      "multi-messenger constraints",
      "binary neutron star merger gw170817"
    ],
    "tags": [
      "review article"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 23,
      "language": "en",
      "license": "arXiv",
      "status": "editable"
    }
  }
}