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Swift-XRT observations of Type IIn supernova ASASSN-17kr a.k.a. SN 2017gas

ATel #10705; Poonam Chandra (NCRA-TIFR), Roger A. Chevalier (University of Virginia)
on 4 Sep 2017; 08:22 UT
Distributed as an Instant Email Notice Supernovae
Credential Certification: Poonam Chandra (poonam@ncra.tifr.res.in)

Subjects: X-ray, Supernovae

We report on behalf of a larger collaboration: We observed nearby Type IIN supernova ASASSN-17kr a.k.a SN 2017gas (Brimacombe et al. ATel# 10652, Bose et al., ATel# 10669) with the Swift-XRT starting 2017 Aug 31 for a duration of 5ks. We do not detect any X-ray emission from the SN position (Brimacombe et al., ATel# 10652). The 3-sigma upper limit on the photon counts is 2.99E-3 counts/s. Assuming a 10 keV thermal plasma and a Galactic HI column density of 1.87E21 cm^{-2} in this direction, this corresponds to an unabsorbed flux (0.3-10 keV) of 1.8E-13 erg/s/cm^2 or an unabsorbed luminosity (for d=43.4 Mpc) of 4E40 erg/s.