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The Swift Discovery of X-ray Afterglows Accompanying Short Bursts from SGR 1900+14

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arxiv 0806.0099 v1 pith:JTYTN2IZ submitted 2008-05-31 astro-ph

The Swift Discovery of X-ray Afterglows Accompanying Short Bursts from SGR 1900+14

classification astro-ph
keywords burstsshortafterglowsluminositiesx-rayaccompanyingdiscoveryinitial
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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The discovery of X-ray afterglows accompanying two short bursts from SGR 1900+14 is presented. The afterglow luminosities at the end of each observation are lower by 30-50% than their initial luminosities, and decay with power law indices p ~ 0.2-0.4. Their initial bolometric luminosities are L ~ 10^34-10^35 erg s^-1. We discuss analogies and differences between the X-ray afterglows of SGR short bursts and short gamma-ray bursts.

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