[ Previous | Next | ADS ]

Swift/BAT reports increased activity from IGR J18483-0311

ATel #3780; H. A. Krimm (CRESST/GSFC/USRA), P. Romano (INAF-IASF Palermo), S. D. Barthelmy (GSFC), W. Baumgartner (CRESST/GSFC/UMBC), J. Cummings (CRESST/GSFC/UMBC), E. Fenimore (LANL), N. Gehrels (GSFC), C. B. Markwardt (GSFC), D. Palmer (LANL), T. Sakamoto (CRESTT/GSFC/UMBC), G. Skinner (CRESST/GSFC/UMD), M. Stamatikos (OSU/GSFC), J. Tueller (GSFC), T. Ukwatta (GSFC/MSU)
on 24 Nov 2011; 12:08 UT
Credential Certification: Hans A. Krimm (Hans.Krimm@nasa.gov)

Subjects: Binary, Neutron Star, Transient

The Swift/BAT hard X-ray transient monitor reports renewed activity in the 15-50 keV band from the supergiant fast X-ray transient and HMXB neutron star system IGR J18483-0311. The source has increased in intensity from its normal level of approximately 0.001 cts/cm^2/sec (~4 mCrab) on 2011 Nov. 18 to a level of 0.013 +/- 0.003 (~60 mCrab) on 2011 Nov. 23 (MJD 55888). This is the highest level seen since August 2008. An earlier peak of ~30 mCrab was seen one orbital period ago on 2001 Nov. 5.

Swift/BAT Hard X-ray Transient light curve for IGR J18483-0311