X-ray Swift observations of SN 2018cow

L E Rivera Sandoval, T J Maccarone, A Corsi, P J Brown, D Pooley, J C Wheeler
2018 Monthly Notices of the Royal Astronomical Society: Letters  
Supernova (SN) 2018cow (or AT2018cow) is an optical transient detected in the galaxy CGCG 137-068. It has been classified as a SN due to various characteristics in its optical spectra. The transient is also a bright X-ray source. We present results of the analysis of ~62ks of X-ray observations taken with the Neil Gehrels Swift Observatory over 27 days. We found a variable behavior in the 0.3-10 keV X-ray light curve of SN 2018cow, with variability timescales of days. The observed X-ray
more » ... ity could be due to the interaction between the SN ejecta and a non-uniform circumstellar medium, perhaps related to previous mass ejections from a luminous-blue-variable-like progenitor.
doi:10.1093/mnrasl/sly145 fatcat:rf6xzd7h3vb6tkmxtrzeju54dq