AstroNote 2020-204

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DRAFT
2020-10-23 23:13:04
Type: Object/s-Data/Analysis
VLA X-band Detection of AT2020xnd
Authors: A. Y. Q. Ho (UC Berkeley), D. A. Perley (LJMU), and Y. Yao (Caltech)
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.

Show current TNS values
CatalogNameReported RAReported DECReported Obj-TypeReported RedshiftHost NameHost RedshiftRemarksTNS RATNS DECTNS Obj-TypeTNS Redshift
TNS2020xnd22:20:02.030-02:50:25.300.244222:20:02.030-02:50:25.30
TNS2018cow16:16:00.220+22:16:04.91SN Ic-BL016:16:00.220+22:16:04.91SN Ic-BL