Is a (C+O) star-neutron star close binary system a progenitor of soft gamma-ray repeaters?

Details Is a (C+O) star-neutron star close binary system a progenitor of soft gamma-ray repeaters? Is a (C+O) star-neutron star close binary system a progenitor of soft gamma-ray repeaters?

Apr 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996aipc..366...43h&link_type=abstract

High velocity neutron stars and gamma-ray bursts. AIP Conference Proceedings, Volume 366, pp. 43-47 (1996).

Physics

Spectroscopic Binaries, Close Binaries, Neutron Stars, Gamma-Ray Sources, Gamma-Ray Bursts

Scientific paper

We consider a close binary system with separation ˜0.2 Rsolar which consists of a (C+O) star of mass ˜4 Msolar and a neutron star as a progenitor of soft gamma-ray repeater (SGR) and a high velocity pulsar. After the event of the supernova explosion, both new and old neutron stars have high relative velocity of ˜1000 km s-1 to the center of mass of the ejecta. SGR activities can be induced by the episodic accretion of the supernova ejecta onto the old neutron star or the strange high rotating pulsar of the new neutron star. Future observations with fine positional resolution can clarify the position ambiguity between the gamma ray and X-ray sources.

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