Probing the nature of short swift bursts via deep INTEGRAL monitoring of GRB 050925

T. Sakamoto; L. Barbier; S. D. Barthelmy; J. R. Cummings; E. E. Fenimore; N. Gehrels; H. A. Krimm; C. B. Markwardt; D. M. Palmer; A. M. Parsons; G. Sato; M. Stamatikos; J. Tueller

doi:10.1016/j.asr.2010.08.004

Probing the nature of short swift bursts via deep INTEGRAL monitoring of GRB 050925

T. Sakamoto, L. Barbier, S. D. Barthelmy, J. R. Cummings, E. E. Fenimore, N. Gehrels, H. A. Krimm, C. B. Markwardt, D. M. Palmer, A. M. Parsons, G. Sato, M. Stamatikos, J. Tueller

Waseda Research Institute for Science and Engineering

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

We present results from Swift, XMM-Newton, and deep INTEGRAL monitoring in the region of GRB 050925. This short Swift burst is a candidate for a newly discovered soft gamma-ray repeater (SGR) with the following observational burst properties: (1) galactic plane (b = -0.1°) localization, (2) 150 ms duration, and (3) a blackbody rather than a simple power-law spectral shape (with a significance level of 97%). We found two possible X-ray counterparts of GRB 050925 by comparing the X-ray images from Swift XRT and XMM-Newton. Both X-ray sources show the transient behavior with a power-law decay index shallower than -1. We found no hard X-ray emission nor any additional burst from the location of GRB 050925 in ∼5 ms of INTEGRAL data. We discuss about the three BATSE short bursts which might be associated with GRB 050925, based on their location and the duration. Assuming GRB 050925 is associated with the H _II regions (W 58) at the galactic longitude of l = 70°, we also discuss the source frame properties of GRB 050925.

Original language	English
Pages (from-to)	1346-1352
Number of pages	7
Journal	Advances in Space Research
Volume	47
Issue number	8
DOIs	https://doi.org/10.1016/j.asr.2010.08.004
Publication status	Published - 2011 Apr 15

Keywords

Burst
Gamma-ray

ASJC Scopus subject areas

Aerospace Engineering
Space and Planetary Science

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10.1016/j.asr.2010.08.004

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Sakamoto, T., Barbier, L., Barthelmy, S. D., Cummings, J. R., Fenimore, E. E., Gehrels, N., Krimm, H. A., Markwardt, C. B., Palmer, D. M., Parsons, A. M., Sato, G., Stamatikos, M., & Tueller, J. (2011). Probing the nature of short swift bursts via deep INTEGRAL monitoring of GRB 050925. Advances in Space Research, 47(8), 1346-1352. https://doi.org/10.1016/j.asr.2010.08.004

Probing the nature of short swift bursts via deep INTEGRAL monitoring of GRB 050925. / Sakamoto, T.; Barbier, L.; Barthelmy, S. D.; Cummings, J. R.; Fenimore, E. E.; Gehrels, N.; Krimm, H. A.; Markwardt, C. B.; Palmer, D. M.; Parsons, A. M.; Sato, G.; Stamatikos, M.; Tueller, J.

In: Advances in Space Research, Vol. 47, No. 8, 15.04.2011, p. 1346-1352.

Research output: Contribution to journal › Article › peer-review

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AU - Fenimore, E. E.

AU - Gehrels, N.

AU - Krimm, H. A.

AU - Markwardt, C. B.

AU - Palmer, D. M.

AU - Parsons, A. M.

AU - Sato, G.

AU - Stamatikos, M.

AU - Tueller, J.

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AB - We present results from Swift, XMM-Newton, and deep INTEGRAL monitoring in the region of GRB 050925. This short Swift burst is a candidate for a newly discovered soft gamma-ray repeater (SGR) with the following observational burst properties: (1) galactic plane (b = -0.1°) localization, (2) 150 ms duration, and (3) a blackbody rather than a simple power-law spectral shape (with a significance level of 97%). We found two possible X-ray counterparts of GRB 050925 by comparing the X-ray images from Swift XRT and XMM-Newton. Both X-ray sources show the transient behavior with a power-law decay index shallower than -1. We found no hard X-ray emission nor any additional burst from the location of GRB 050925 in ∼5 ms of INTEGRAL data. We discuss about the three BATSE short bursts which might be associated with GRB 050925, based on their location and the duration. Assuming GRB 050925 is associated with the H II regions (W 58) at the galactic longitude of l = 70°, we also discuss the source frame properties of GRB 050925.

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Probing the nature of short swift bursts via deep INTEGRAL monitoring of GRB 050925

Abstract

Keywords

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