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ATEL # 2319; H. A. Krimm (CRESST/GSFC/USRA), S. D. Barthelmy (GSFC), W. Baumgartner (CRESST/GSFC/UMBC), J. Cummings (CRESST/GSFC/UMBC), E. Fenimore (LANL), N. Gehrels (GSFC), C. B. Markwardt (CRESST/GSFC/UMD), D. Palmer (LANL), T. Sakamoto (CRESTT/GSFC/UMBC), G. Skinner (CRESST/GSFC/UMD), M. Stamatikos (OSU/GSFC), J. Tueller (GSFC), T. Ukwatta (GSFC/GWU)
on 30 Nov 2009; 19:11 UT
Distributed as an Instant Email Notice (Transients)
Password Certification: Hans A. Krimm (Hans.Krimm@nasa.gov)
Subjects: X-ray, Binaries, Neutron Stars, Pulsars, Transients
The Swift/BAT hard X-ray transient monitor reports increased activity in the 15-50 keV band for the transient pulsar and Be/X-ray binary V0332+53. Starting on 2009-11-24 (MJD 55159), the source has increased rapidly in intensity from an undetectable level (one-sigma upper limit of 0.002 cts/cm2/sec or 8 mcrab) up to a current level of 0.012 ± 0.003 cts/cm2/sec (50 mcrab) on 2009-11-29. This is the highest rate seen in the BAT monitor since its outburst in late October 2008 (Krimm et al, ATel #1792).
BAT Transient Monitor observations of V0332+53