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Details

Autor(en) / Beteiligte
Titel
Illuminating gravitational waves: A concordant picture of photons from a neutron star merger
Ist Teil von
  • Science (American Association for the Advancement of Science), 2017-12, Vol.358 (6370), p.1559-1565
Ort / Verlag
United States: American Association for the Advancement of Science
Erscheinungsjahr
2017
Link zum Volltext
Quelle
American Association for the Advancement of Science
Beschreibungen/Notizen
  • Merging neutron stars offer an excellent laboratory for simultaneously studying strong-field gravity and matter in extreme environments. We establish the physical association of an electromagnetic counterpart (EM170817) with gravitational waves (GW170817) detected from merging neutron stars. By synthesizing a panchromatic data set, we demonstrate that merging neutron stars are a long-sought production site forging heavy elements by r-process nucleosynthesis. The weak gamma rays seen in EM170817 are dissimilar to classical short gamma-ray bursts with ultrarelativistic jets. Instead, we suggest that breakout of a wide-angle, mildly relativistic cocoon engulfing the jet explains the low-luminosity gamma rays, the high-luminosity ultraviolet-optical-infrared, and the delayed radio and x-ray emission. We posit that all neutron star mergers may lead to a wide-angle cocoon breakout, sometimes accompanied by a successful jet and sometimes by a choked jet.
Sprache
Englisch
Identifikatoren
ISSN: 0036-8075, 1095-9203
eISSN: 1095-9203
DOI: 10.1126/science.aap9455
Titel-ID: cdi_swepub_primary_oai_DiVA_org_su_151196

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