X-ray upper limit on the progenitor of the supernova ASASSN-16fq (SN 2016cok) in M66
ATel #9094; A. K.H. Kong (National Tsing Hua University, Taiwan)
on 28 May 2016; 18:45 UT
Credential Certification: Albert Kong (akong@phys.nthu.edu.tw)
Subjects: X-ray, Supernovae
Referred to by ATel #: 9189
Following the discovery of the Type IIP supernova ASASSN-16fq (= SN 2016cok; ATel #9091, #9093), we examined a 49.5-ks archival Chandra ACIS-S observation of the host galaxy M66 taken in 2008 March 31 to search for the X-ray progenitor. Within r=2 arcsec, no X-ray source was found at the position of the supernova. The nearest X-ray point source is about 12 arcsec from the supernova. Assuming an absorbed power-law with N_H=2.5e20 cm^-2 and a photon index of 1.5, we derived a 3-sigma 0.3-7 keV luminosity upper limit of 3.9e37 erg/s at 10 Mpc (from NED).
