Spectral Analysis of the SGR J1550-5418 Bursts Detected with Fermi/GBM During its January 2009 Activation
Abstract
In 2008 October, the Soft Gamma Repeater SGR J1550-5418 entered an active period that lasted one week. On 2009 January 22, the source entered a second, extremely active period, which lasted for one month, and was followed by a third, small episode in 2009 March. The highest number of bursts ( 450) was observed on January 22 with the Fermi/Gamma-ray Burst Monitor (GBM). The combination of the unique GBM temporal and spectral capabilities has enabled us to study integrated and time-resolved spectra of most of these SGR bursts in great detail. We present here the results of our analysis of all the bursts observed with GBM during the source's active period in January 2009.
- Publication:
-
AAS/High Energy Astrophysics Division #11
- Pub Date:
- March 2010
- Bibcode:
- 2010HEAD...11.1617V