The origin of the first neutron star – neutron star merger

  title={The origin of the first neutron star – neutron star merger},
  author={Krzysztof Belczyński and Ahamd Askar and Manuel Arca-Sedda and Martyna Chruslinska and Martina Donnari and Mirek Giersz and Matthew J. Benacquista and Rainer Spurzem and Dongming Jin and Grzegorz Wiktorowicz and Diogo Belloni},
  journal={Astronomy \& Astrophysics},
The first neutron star-neutron star (NS-NS) merger was discovered on August 17, 2017 through gravitational waves (GW170817) and followed with electromagnetic observations. This merger was detected in an old elliptical galaxy with no recent star formation. We perform a suite of numerical calculations to understand the formation mechanism of this merger. We probe three leading formation mechanisms of double compact objects: classical isolated binary star evolution, dynamical evolution in globular… 

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