General relativistic magnetohydrodynamic simulations of binary neutron star mergers forming a long-lived neutron star.

Ciolfi R., Kastaun W., Giacomazzo B., Endrizzi A., Siegel D. M., Perna R.
  Lunedì 11/09   14:30 - 18:30   Aula A203   III - Astrofisica
Recent observations indicate that in a large fraction of binary neutron star (BNS) mergers a long-lived neutron star (NS) may be formed rather than a black hole. Unambiguous electromagnetic (EM) signatures of such a scenario would strongly impact our knowledge on how short gamma-ray bursts (SGRBs) and their afterglow radiation are generated. Furthermore, such EM signals would have profound implications for multimessenger astronomy with joint EM and gravitational-wave (GW) observations of BNS mergers, which will soon become reality with the next science runs of the advanced LIGO/Virgo network of ground-based GW detectors. We will present recent BNS merger simulations involving long-lived NS remnants and discuss the results in the context of SGRBs and multimessenger astronomy.