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Discovery of a new soft gamma repeater, SGR J1833-0832

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Gogus, E., Cusumano, G., Levan, A. J., Kouveliotou, Chryssa, Sakamoto, T., Barthelmy, S. D., Campana, S., Kaneko, Y., Stappers, B. W., Postigo, A. de Ugarte et al.
(2010) Discovery of a new soft gamma repeater, SGR J1833-0832. Astrophysical Journal, Vol.718 (No.1). pp. 331-339. doi:10.1088/0004-637X/718/1/331

Research output not available from this repository, contact author.
Official URL: http://dx.doi.org/10.1088/0004-637X/718/1/331

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Abstract

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
Publisher: IOP Publishing
ISSN: 0004-637X
Official Date: 20 July 2010
Dates:
DateEvent
20 July 2010Published
Volume: Vol.718
Number: No.1
Number of Pages: 9
Page Range: pp. 331-339
DOI: 10.1088/0004-637X/718/1/331
Status: Peer Reviewed
Publication Status: Published
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

Data sourced from Thomson Reuters' Web of Knowledge

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