A VLA Radio Detection of Supernova SN2020oi
ATel #13400; A. Horesh, I. Sfaradi (HUJI)
on 11 Jan 2020; 21:34 UT
Credential Certification: Assaf Horesh (assafh@mail.huji.ac.il)
Subjects: Radio, Supernovae, Transient
We report the detection of radio emission from the nearby supernova in M100, SN2020oi (TNS report 58241; ATel #13393; ATel #13391; ATel #13398; TNS AstroNote 2020-8; TNS AstroNote 2020-9).
The Jansky Very Large Array (VLA) undertook a second public observation of SN2020oi on 2020 January 11. The observation was conducted at 44 GHz (Q-band) in the D configuration. We performed an analysis of the data using the 3C286 as a flux calibrator and J1215+1654 as a gain calibrator.
A single point source is detected in the VLA image at RA=12:22:54.917 Dec=15:49:25.01 (consistent with the position of SN2020oi) at a flux level of ~5 mJy. This confirms the possible detection we previously reported at a lower frequency of 8 GHz in an image with a lower spatial resolution (ATel #13398).
We encourage further high cadence multi frequency radio observations with the VLA and other facilities.
We thank the VLA and NRAO staff for scheduling and performing this public observation.
