AMI-LA radio detection of the type IIb SN 2023mut
ATel #16173; Itai Sfaradi (HUJI), Lauren Rhodes (Oxford), Assaf Horesh (HUJI), Joe bright (Oxford), Rob Fender (Oxford), Dave Green (Cambridge), David Titterington (Cambridge)
on 4 Aug 2023; 16:25 UT
Credential Certification: Assaf Horesh (assafh@mail.huji.ac.il)
Subjects: Radio, Supernovae, Transient
Referred to by ATel #: 16176
We observed the field of the type IIb SN 2023mut (TNS report 182114) with the Arcminute Microkelvin Imager - Large Array (AMI-LA) for 4 hours on the 2023-07-18, with a central frequency of 15.5 GHz. A point source is detected in the AMI-LA image at RA = 04:48:34.31 +/- 0.05 s, Dec = +00:14:47.21 +/- 2.64 arcsec, consistent with the reported position of SN 2023mut. The source is detected at a flux density of 46 +/- 2 mJy.
Past pre-discovery radio observation of the field of SN 2023mut were performed by the VLA Sky Survey (VLASS) on the 2023-03-01 (epoch 3.1), at a central frequency of 3 GHz. The VLASS image of the field of SN 2023mut show no emission from the reported position with a 3-sigma rms of 0.4 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.
