Mergers of Magnetized Neutron Stars with Spinning Black Holes: Disruption, Accretion, and Fallback

Sarvnipun Chawla, Matthew Anderson, Michael Besselman, Luis Lehner, Steven L. Liebling, Patrick M. Motl, David Neilsen
2010 Physical Review Letters  
We investigate the merger of a neutron star (of compaction ratio 0.1) in orbit about a spinning black hole in full general relativity with a mass ratio of 5:1, allowing for the star to have an initial magnetization of 10^12 Gauss. We present the resulting gravitational waveform and analyze the fallback accretion as the star is disrupted. The evolutions suggest no significant effects from the initial magnetization. We find that only a negligible amount of matter becomes unbound; 99 has a
more » ... time of 10 seconds or shorter to reach the region of the central engine and that 99.99 black hole within 3 hours.
doi:10.1103/physrevlett.105.111101 pmid:20867561 fatcat:f7tz2aahrzdh5hsrugfpusz62e