Swift Detection of a Superflare from EV Lac
Abstract
The Swift team reports the detection of a superflare from the dMe flare star EV Lac. The Burst Alert Telescope (BAT) triggered on EV Lac during a pre-planned slew at 2008-04-25T05:13:57 = T0(BAT), and resulted in an automatic trigger slew to the source. The hard X-ray source was already declining in flux as it entered the BAT field of view during the pre- planned slew, with a peak intensity in the BAT 15-50 keV band of around 660 mCrab, or 0.15 counts/cm2/s.
- Publication:
-
The Astronomer's Telegram
- Pub Date:
- April 2008
- Bibcode:
- 2008ATel.1499....1O
- Keywords:
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- X-ray;
- Stars