e-MERLIN non-detection of supernova SN2025gvs in UGC10058
ATel #17165; D. Swan, M. Argo, J. Pledger (University of Central Lancashire, UK), D. Williams-Baldwin (University of Manchester)
on 30 Apr 2025; 11:27 UT
Credential Certification: Megan Argo (margo@uclan.ac.uk)
Subjects: Radio, Supernovae, Transient
Supernova SN2025gvs was first reported on 05/04/2025 on the Transient Name Server, TNS#251047. Located at RA=15:50:23.398 Dec=+25:55:10.03, and classified on 06/04/2025 as a type II, with early similarities to type IIb or type IIP.
Using the e-MERLIN radio interferometer, we made observations centred on the reported location, with a total time on target of 04:21:26 (hh:mm:ss), using the C-band receivers at a centre frequency of 6.3 GHz. We report no radio source within 5 arcseconds of the reported location, with a 3-sigma RMS of 99 microJy/beam, consistent with a non-detection at this time.
At an estimated distance of 31 Mpc, the 3-sigma limit suggests an upper monochromatic luminosity limit of 1.05e26 erg/s/Hz at 6.3 GHz. Further observations of this supernova are planned.
We thank the staff of the e-Merlin for their support and assistance with these observations. e-MERLIN is a National Facility operated by the University of Manchester at Jodrell Bank Observatory on behalf of STFC, part of UK Research and Innovation.
