Collapse of Neutron Stars to Black Holes in Binary Systems: A Model for Short Gamma-Ray Bursts | Zendy

C. D. Dermer | Zendy; A. M. Atoyan | Zendy

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Collapse of Neutron Stars to Black Holes in Binary Systems: A Model for Short Gamma-Ray Bursts

Author(s) -

C. D. Dermer,

A. M. Atoyan

Publication year - 2006

Publication title -

the astrophysical journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.376

H-Index - 489

eISSN - 1538-4357

pISSN - 0004-637X

DOI - 10.1086/504895

Subject(s) - physics , neutron star , astrophysics , white dwarf , gamma ray burst , globular cluster , x ray binary , accretion (finance) , astronomy , roche lobe , galaxy , compact star , afterglow , stellar black hole , black hole (networking) , stars , computer network , routing protocol , routing (electronic design automation) , link state routing protocol , computer science

The accretion of ~ 0.1 -- 1 M_o of material by a neutron star through Rochelobe overflow of its companion or through white-dwarf/neutron-star coalescencein a low mass binary system could be enough to exceed the critical mass of aneutron star and trigger its collapse to a black hole, leading to theproduction of a short gamma-ray burst (SGRB). In this model, SGRBs would oftenbe found in early-type galaxies or in globular cluster environments, thoughthey could also be formed through stellar-wind accretion in high-mass binarysystems of star-forming galaxies. Although the collapse event is likely to beof short (<< 1 s) duration, afterglow complexity could be produced by neutrondecoupling in the fireball and subsequent accretion of the companion remnant,for example, the disrupted white-dwarf core.Comment: 4 pages, ApJ Letters, in pres

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