Discovery of a new soft gamma repeater, SGR J1833-0832
. (2010) Discovery of a new soft gamma repeater, SGR J1833-0832. Astrophysical Journal, Vol.718 (No.1). pp. 331-339. ISSN 0004-637X Full text not available from this repository.
Official URL: http://dx.doi.org/10.1088/0004-637X/718/1/331
On 2010 March 19, the Swift/Burst Alert Telescope triggered on a short burst with temporal and spectral characteristics similar to those of soft gamma repeater (SGR) bursts. The source location, however, did not coincide with any known SGR. Subsequent observations of the source error box with the Swift/X-Ray Telescope and the Rossi X-ray Timing Explorer led to the discovery of a new X-ray source with a spin period of 7.56 s, confirming SGR J1833-0832 as a new magnetar. Based on our detailed temporal and spectral analyses, we show that the new SGR is rapidly spinning down (4 x 10(-12) s s(-1)) and find an inferred dipole magnetic field of 1.8 x 10(14) G. We also show that the X-ray flux of SGR J1833-0832 remained constant for approximately 20 days following the burst and then started to decline. We derived an accurate location of the source with the Chandra X-ray Observatory and we searched for a counterpart in deep optical and infrared observations of SGR J1833-0832, and for radio pulsed emission with the Westerbork Radio Synthesis Telescope. Finally, we compare the spectral and temporal properties of the source to other magnetar candidates.
|Item Type:||Journal Article|
|Subjects:||Q Science > QB Astronomy|
|Divisions:||Faculty of Science > Physics|
|Journal or Publication Title:||Astrophysical Journal|
|Official Date:||20 July 2010|
|Number of Pages:||9|
|Page Range:||pp. 331-339|
|Access rights to Published version:||Restricted or Subscription Access|
|Funder:||EU, NASA, Netherlands foundation for Scientific Research|
|Grant number:||MTKD-CT-2006-042722, NAS5-00136, NNH07ZDA001-GLAST|
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