VLA X-band Detection of ZTF20abtxwfx (AT2020sev)
Anna Y. Q. Ho (UCB), Daniel Perley (LJMU), and Igor Andreoni (Caltech)
On UT 2020 Aug 31 the Very Large Array (VLA) observed the position of ZTF20abtxwfx (AT2020sev), a fast-fading red optical transient with no obvious quiescent counterpart (Andreoni et al. ATel #13978). The image RMS was 4 uJy in 24 minutes of on-source time.

A point source was detected at the position of ZTF20abtxwfx with a flux density of 50 uJy in X-band (central frequency 10 GHz). The detection of radio emission supports the hypothesis that this transient is a relativistic afterglow.

We thank the VLA staff for rapidly scheduling and executing these observations.
radio,optical,transient