MAXI/GSC detected an intense X-ray flare from an RS CVn star VY Ari
Abstract
On May 12 2016, the MAXI/GSC detected an enhanced X-ray emission at a position consistent with that of an RS CVn star VY Ari. The flux peak was observed at a transit starting at 12:34 UT on 11 May 2016 with a value of 146+-35 mCrab (90% error) in the 4-10 keV band, corresponding to a luminosity of 5 & times1032 ergs/s for an assumed distance of 44 pc. At the next scan starting at 14:08 on 11 May 2016, the observed flux was 83+-26 mCrab (90% error) in the 4-10 keV, corresponding to a luminosity of 4 & times1032 ergs/s.
- Publication:
-
The Astronomer's Telegram
- Pub Date:
- May 2016
- Bibcode:
- 2016ATel.9044....1N
- Keywords:
-
- Binary;
- Star;
- Transient;
- Variables