BURST TAILS FROM SGR J1550-5418 OBSERVED WITH THE ROSSI X-RAY TIMING EXPLORER
ABSTRACT We present the results of our extensive search using the Bayesian block method for long tails following short bursts from a magnetar, SGR J1550-5418, over all RXTE observations of the source. We identified four bursts with extended tails, most of which occurred during its 2009 burst active...
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| Published in: | The Astrophysical journal Vol. 807; no. 1; pp. 1 - 9 |
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| Main Authors: | , , , , |
| Format: | Journal Article |
| Language: | English |
| Published: |
United States
The American Astronomical Society
01-07-2015
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| Subjects: | |
| Online Access: | Get full text |
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| Summary: | ABSTRACT We present the results of our extensive search using the Bayesian block method for long tails following short bursts from a magnetar, SGR J1550-5418, over all RXTE observations of the source. We identified four bursts with extended tails, most of which occurred during its 2009 burst active episode. The durations of tails range between ∼13 s and over 3 ks, which are much longer than the typical duration of bursts. We performed detailed spectral and temporal analyses of the burst tails. We find that the spectra of three tails show a thermal nature with a trend of cooling throughout the tail. We compare the results of our investigations with the properties of four other extended tails detected from SGR 1900+14 and SGR 1806-20 and suggest a scenario for the origin of the tail in the framework of the magnetar model. |
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| Bibliography: | ApJ98653 Compact Objects ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
| ISSN: | 0004-637X 1538-4357 1538-4357 |
| DOI: | 10.1088/0004-637X/807/1/42 |