Swift/BAT observations of the X-ray flare from Mrk 421
Abstract
The Swift/BAT team reports that the current flare from the blazar Markarian 421 is strongly detected in the BAT hard X-ray transient monitor. In the 15-50 keV energy band of the monitor, renewed activity from Mrk 421 began on 2013 April 12 (MJD 56394) when the source reached a one-day average rate of 0.006 +/- 0.0008 ct/s/cm^2 (30 mCrab), rising to a one-day average rate of 0.012 +/- 0.0009 ct/s/cm^2 (55 mCrab) on April 15.
- Publication:
-
The Astronomer's Telegram
- Pub Date:
- April 2013
- Bibcode:
- 2013ATel.4983....1K
- Keywords:
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- X-ray;
- Blazar;
- Transient