GCN Circular 30361
Subject
GRB 210619B: JCMT SCUBA-2 sub-mm observations
Event
Date
2021-07-03T08:59:09Z (4 years ago)
From
Ian Smith at Rice U <ian.smith.astronomy@gmail.com>
I.A. Smith (Rice U.), D.A. Perley (LJMU), and N.R. Tanvir
(U. of Leicester) report:
We observed the Swift UVOT location of GRB 210619B (D'Avanzo
et al., GCN Circ. 30261) using the SCUBA-2 sub-millimeter
continuum camera on the James Clerk Maxwell Telescope.
Observations totaling 2.1 hours were obtained on UT 2021-06-20 and
2021-06-21 in average and poor weather conditions respectively.
No counterpart was detected in the individual or combined maps.
Combining all the data, the RMS background noise was 1.61 mJy/beam
at 850 microns and 27.9 mJy/beam at 450 microns; the mid-point of
the run was 1.07 days after the burst trigger.
We thank Patrice Smith, Mark Rawlings, Harriet Parsons, and the
JCMT staff for the prompt support of these observations that were
taken under project M21AP020.