DRAFT
2023-06-15 21:06:25
Type: Object/s-Data/Analysis
Bibcode: 2023TNSAN.174....1H
VLA X-band detection of AT2023fhn
Source Group: ZTF
Keywords: Radio
Abstract:
We report the detection of luminous radio emission from the fast blue optical transient AT2023fhn at z=0.24.
On UT 2023 June 15 the Very Large Array (VLA) observed the position of AT2023fhn (ZTF23aaeozpp), a luminous fast blue optical transient at z=0.24 (AstroNote #2023-93) with an X-ray counterpart (AstroNote #2023-105). The X-band image RMS was 4 uJy in 33 minutes of on-source time.
A point source was detected at the position of AT2023fhn with a flux density of 42 uJy in X-band (10 GHz in the observer frame), corresponding to a luminosity of 7.6E28 erg/s/Hz at 54 rest-frame days post-explosion. This is very similar to the radio luminosity of AT2018cow at a similar frequency and epoch (Margutti et al. 2019).
We thank the VLA staff for rapidly scheduling and executing these observations.
| Catalog | Name | Reported RA | Reported DEC | Reported Obj-Type | Reported Redshift | Host Name | Host Redshift | Remarks | TNS RA | TNS DEC | TNS Obj-Type | TNS Redshift |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| TNS | 2023fhn | 10:08:03.815 | +21:04:26.95 | 10:08:03.815 | +21:04:26.95 | |||||||
| TNS | 2018cow | 16:16:00.220 | +22:16:04.91 | SN Ic-BL | 0 | 16:16:00.220 | +22:16:04.91 | SN Ic-BL | 0.014 |
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