Swift/BAT detection of an SGR-like flare from near Sgr A*
Abstract
Degenaar et al (ATEL #5006) recently reported elevated X-ray emission from Sgr A* detected in daily monitoring by Swift XRT, which has persisted for at least a day (Dwelly and Ponti, ATEL #5008). We report here on observations of Sgr A* triggered by the detection of a short flare by Swift BAT on April 25, 2013 at 19:15:25UT (Barthelmy et al., GCN #14443).
Using the data set from T-240 to T+303 sec, we report on updated analysis of BAT trigger #554491. The BAT ground-calculated position is RA, Dec = 266.388, -28.982, which isRA(J2000) = 17h 45m 33.3s
Dec(J2000) = -28d 58m 55s
with an uncertainty of 2.1 arcmin, (radius, sys+stat, 90% containment).
- Publication:
-
The Astronomer's Telegram
- Pub Date:
- April 2013
- Bibcode:
- 2013ATel.5009....1K
- Keywords:
-
- X-ray;
- Black Hole;
- Soft Gamma-ray Repeater;
- Transient