Swift detects a new outburst of the SFXT IGR J17544-2619
Abstract
The source IGR J17544-2619 was detected in the Swift/BAT both as on-board sub-threshold event and in the BAT hard X-ray transient monitor. On-board, the source reached 5.7-sigma significance (just below the 6-sigma trigger threshold) in a 320-sec period beginning 2012-April-12 00:37:19.9 UT, with a flux of 104 +/- 18 mCrab (15-50 keV). In the BAT transient monitor, the source was detected in seven pointings over the period from 2012-04-11 19:59:04 UT to 2012-04-12 06:54:00 UT, with a peak of 0.02 +/- 0.004 ct/s/cm^2 (15-50 keV; ~90 mCrab) in the 1000-sec pointing beginning at 2012-04-12 00:37:28 UT.
- Publication:
-
The Astronomer's Telegram
- Pub Date:
- April 2012
- Bibcode:
- 2012ATel.4040....1R
- Keywords:
-
- X-ray;
- Gamma Ray;
- Binary;
- Neutron Star;
- Transient