Increase in the X-ray flux of AT2018cow
Abstract
We report on Swift/XRT observations of the optical transient AT2018cow/ATLAS18qqn (ATel #11727). Observations of the target taken on 29 June 2018 showed an increase in the X-ray flux compared to previous observations (ATel #11761), reaching a maximum flux of 1.8 +/- 0.7 e-11 erg/s/cm2 when we fit an absorbed power law model using wilm abundances (Wilms et al. 2000) and vern cross-sections (Verner et al. 1996) to the X-ray spectrum in the 0.3-10 keV energy band.
- Publication:
-
The Astronomer's Telegram
- Pub Date:
- June 2018
- Bibcode:
- 2018ATel11801....1R
- Keywords:
-
- Gamma-Ray Burst;
- Supernovae;
- Transient