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- W2072529495 abstract "The BATSE discovery of the near-simultaneous turnon of a soft gamma-ray repeater (SGR) source, located to apporximately 5 deg and possibly SGR 1900+14, and a new hard X-ray transient GRS 1915+105 (discovered by Granat), suggests they may be associated. Published positions for both the SGR and GRS sources do not preclude spatial coincidence for the two sources, or the GRS transient may be associated with another SGR source. We outline a model for SGR sources as due to thermal instabilities in spherical accretion onto black holes in giant molecular clouds. We show that the SIGMA position for the GRS 1915 source is consistent with it being in a giant molecular cloud and compare this possible identification with that suggested for the `1E' source in the Galactic center region. Our model would predict a strong concentration of SGR sources toward the Galactic plane (consistent with both SGR 1900+14 and SGR 1806-20) and so would require the only other known 'SGR,' the GRB 790305 superburst source apparently in the Large Magellanic Cloud, to be fundamentally different. We note that the recently discovered radio/infrared counterpart for the SGR 1806-20 may be consistent with this model, rather than the compact suprernova remnant/pulsar model suggested by Kulkarni and Frail." @default.
- W2072529495 created "2016-06-24" @default.
- W2072529495 creator A5054070152 @default.
- W2072529495 date "1994-06-01" @default.
- W2072529495 modified "2023-09-27" @default.
- W2072529495 title "Soft gamma-ray repeaters: Black holes in giant molecular clouds?" @default.
- W2072529495 doi "https://doi.org/10.1086/191997" @default.
- W2072529495 hasPublicationYear "1994" @default.
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