Detection of possible gamma emission flares in three interacting binary stars
Abstract
Using the Fermi All-sky Variability Analysis tool (FAVA), we search for gamma flare events from 15 binary stars. We detected flares in the coordinates of three objects: the symbiotic stars AG Peg and ER Del, and the high mass X-ray binary MWC 148. The period of monitoring toward the regions of the targets' coordinates includes about 10 years of observations. The light curves from the FAVA generator show that these three objects manifest 3 to 9 individual gamma flares in the low energy band 100 - 800 MeV. The lifetime of each event lasts within one day. The possible origin of the detected gamma flares is briefly discussed.
- Publication:
-
Bulgarian Astronomical Journal
- Pub Date:
- February 2020
- Bibcode:
- 2020BlgAJ..32....3B
- Keywords:
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- Stars: binaries;
- Stars: flare;
- Accretion;
- accretion disks;
- Stars: individual: AG Peg;
- ER Del;
- MWC148