DETECTION OF SHOCK BREAKOUT IN TYPE IIP SUPERNOVA PS 1-13 arp : IMPLICATIONS FOR THE PROGENITOR STAR WIND

We present the GALEX detection of a UV burst at the time of explosion of an optically normal supernova (SN) IIP (PS1-13arp) from the Pan-STARRS1 survey at z = 0.1665. The temperature and luminosity of the UV burst match the theoretical predictions for shock breakout in a red supergiant (RSG), but with a duration a factor of ∼50 longer than expected. We… CONTINUE READING