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AT2018cow: JCMT SCUBA-2 sub-mm detection

ATel #11781; I. A. Smith (Rice U.), N. R. Tanvir (U. of Leicester), D. A. Perley (LJMU
on 25 Jun 2018; 21:46 UT
Credential Certification: Daniel Perley (d.a.perley@ljmu.ac.uk)

Subjects: Sub-Millimeter, Gamma-Ray Burst, Supernovae, Transient

We are monitoring AT2018cow/ATLAS18qqn (Smartt et al. ATel #11727) using the SCUBA-2 sub-millimeter continuum camera on the James Clerk Maxwell Telescope. The source is well detected at 850 microns, as seen at longer wavelengths by NOEMA (de Ugarte Postigo et al., ATel #11749) and the AMI-LA (Bright et al., ATel #11774). Under fair weather conditions on UT 2018-06-22.253, the 850 micron flux density was 30.2 +/- 1.8 mJy/beam. The source was not detected at that time at 450 microns, with an RMS background noise of 51 mJy/beam.

We thank Mark Rawlings, Kevin Silva, Graham Bell, and the JCMT staff for the prompt support of these observations that are being taken under project M18AP059.