TITLE: GCN CIRCULAR NUMBER: 38014 SUBJECT: EP241021a: AMI-LA radio detection DATE: 24/10/31 15:13:01 GMT FROM: Francesco Carotenuto at University of Oxford <francesco.carotenuto@physics.ox.ac.uk> F. Carotenuto (INAF/OAR), J. Bright (Oxford), R. Fender (Oxford) After the first radio detection with ATCA (Ricci et al. GCN 37949), we observed the Fast X-ray Transient EP241021a (Hu et al. GCN 37834; Fu et al. GCN 37840, Wang et al. GCN 37848) with the Arcminute MicroKelvin Imager - Large Array for a total of 4.7 hours starting on 30 October 2024 at 20:59:50.7 UTC. 3C286 and J0149+0555 were used as flux and time dependent complex gain calibrators, respectively. We obtained a significant detection of the target with a flux density of ~450 uJy/beam at a central frequency of 15.5 GHz. The rms noise in the field is ~75 uJy/beam. Further AMI-LA observations are planned. We thank the Mullard Radio Astronomy Observatory staff for operating and maintaining the AMI-LA. View this GCN Circular online at https://gcn.nasa.gov/circulars/38014. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...