YET ANOTHER MODEL OF SOFT GAMMA-REPEATERS

被引:34
作者
KATZ, JI [1 ]
TOOLE, HA [1 ]
UNRUH, SH [1 ]
机构
[1] WASHINGTON UNIV,MCDONNELL CTR SPACE SCI,ST LOUIS,MO 63130
关键词
GAMMA RAYS; BURSTS; STARS; NEUTRON; ACCRETION; ACCRETION DISKS; SUPERNOVAE; GENERAL;
D O I
10.1086/175034
中图分类号
P1 [天文学];
学科分类号
0704 ;
摘要
We develop a model of soft gamma repeaters (SGRs) in which a supernova leaves planets orbiting a neutron star in intersecting orbits. These planets will collide in similar to 10(4) yr if their orbits are coplanar. Some fragments of debris lose their angular momentum in the collision and fall onto the neutron star, producing a SGR. The initial accretion of matter left by the collision with essentially no angular momentum may produce a superburst like that of 1979 March 5, while debris fragments which later lose their angular momentum produce an irregular but non-Poissonian pattern of smaller bursts resembling those observed in spectrum and duration.
引用
收藏
页码:727 / 732
页数:6
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