RXTE ASM Measurements of Swift J1539.2-6227
ATel #1868; R. A. Remillard (MIT), for the RXTE All Sky Monitor team at MIT and NASA/GSFC
on 8 Dec 2008; 16:45 UT
Credential Certification: Ron Remillard (rr@space.mit.edu)
Subjects: X-ray, Transient
Data from the RXTE ASM confirms the X-ray emission from the recently
identified transient, Swift J1539.2-6227 (ATel #1855). Observations
have been sparse due to the noted angular proximity of the Sun. Data
processing efforts used the source position from the Swift BAT. The
first detection was made on MJD 54799 with a flux of 75(15) mCrab at
1.5-12 keV. During 54804-54808, daily averages are in the range
160-240 mCrab (16). The X-ray colors are typical of a soft X-ray
transient. Further observations are encouraged.