TITLE:   GCN CIRCULAR
NUMBER:  31667
SUBJECT: ZTF22aaajecp/AT2022cmc: AMI-LA radio detection
DATE:    22/03/03 15:28:11 GMT
FROM:    Itai Sfaradi at Hebrew U of Jerusalem  <itai.sfaradi@mail.huji.ac.il>

Itai Sfaradi (HUJI), Lauren Rhodes (Oxford), David Williams
(JBCA/Manchester), Joe Bright (Berkeley), Assaf Horesh (HUJI), Rob Fender
(Oxford), Dave Green (Cambridge), David Titterington (Cambridge)

We report the detection of radio emission from the fast and red optical
transient AT2022cmc (ZTF22aaajecp; Andreoni et al. 2020, GCN 31590).

We observed the field of AT 2022cmc with the Arcminute Microkelvin Imager –
Large Array (AMI-LA) for 4 hours on the 2022-02-26, with a central
frequency of 15.5 GHz. A point source is detected in the AMI-LA image at RA
= 13:34:43.28 Dec = +33:13:02.43, consistent with the reported position of
AT2022cmc. The source is detected at a flux density of ~0.5 mJy.

We plan to perform follow-up observations with the AMI-LA, and encourage
further high cadence multi frequency radio observations with other
facilities.

We thank the staff of MRAO for scheduling and performing this observation.