DRAFT
2020-10-23 23:13:04
Type: Object/s-Data/Analysis
Bibcode: 2020TNSAN.204....1H
VLA X-band Detection of AT2020xnd
Abstract:
We report the detection of luminous radio emission from the fast blue optical transient AT2020xnd at z=0.2442.
On UT 2020 Oct 23 the Very Large Array (VLA) observed the position of AT2020xnd (ZTF20acigmel), a distant (z=0.2442) fast blue optical transient (Perley et al. ATel #14105, AstroNote #2020-199). The X-band image RMS was 5 uJy in 23 minutes of on-source time.
A point source was detected at the position of AT2020xnd with a flux density of 21 uJy in X-band, corresponding to a luminosity of 4E28 erg/s/Hz. This is over an order of magnitude more luminous than the radio luminosity of AT2018cow at a similar frequency and epoch (10 days post-explosion; Ho et al. 2019, ApJ, 871, 73).
We thank the VLA staff for rapidly scheduling and executing these observations.