AT2018cow: archival radio upper limits
ATel #11744; Dillon Dong (Caltech), Gregg Hallinan (Caltech)
on 20 Jun 2018; 23:11 UT
Credential Certification: Jacob Jencson (jj@astro.caltech.edu)
Subjects: Radio, Transient
The VLA Sky Survey observed a field containing AT2018cow (ATLAS18qqn; Smartt et al. ATel #11727) on 2017-09-26 at UT 00:11:19 (MJD 58022.00786). There is no detection at the source location, and we measure a 3 sigma upper limit of ~370uJy at 3GHz. The target location was also observed in the VLA FIRST survey (Becker et al. 1994) on 1995-12-31, and 1997-01-31. For these epochs, we measure a co-added 3 sigma upper limit of ~410uJy at 1.4GHz.