Transient Alerts — HabitableZone

Transient Alerts » in reply to GRB 260924A

See it in the Orrery →

GRB 260924A: VLA detection
GCN Circulars —

GCN Circular 45776
GRB 260924A: VLA detection
From: unknown
Issued: 2026-09-28 17:43 UTC
Type: GRB, Radio Transient

A. Gulati (University of Utah), T. Laskar (University of Utah), K. D. Alexander (University of Arizona), D. Eappachen (University of Utah), C. Christy (University of Arizona), N. Franz (University of Arizona)

We observed GRB 260924A (Fermi GBM, GCN 45712; D’Elia et al., GCN 45713) with the Karl G. Jansky Very Large Array (VLA) at multiple frequencies beginning on 2026 Sep 26 at 14:36 UT (2.6 days after the burst).

In preliminary analysis, we detect a radio counterpart at 15 GHz with a flux density of ~0.6 mJy at the position:

RA (J2000) = 08:55:03.106 +/- 0.001”
Dec (J2000) = +12.02.35.24 +/- 0.03”

This is consistent with the X-ray position (Evans et al., GCN 45715) and optical position (Izzo et al., GCN 45718; Klingler et al., GCN 45735). Further observations are planned.

We thank the VLA staff for scheduling and executing these observations.

Filter: gamma-ray bursts are posted only if in the top 10% of the past year's — by fluence (total energy received per cm², from Fermi GBM, Konus-Wind, GECAM and similar circulars; now ≥ 3.9×10^-5 erg/cm²) or by the number of GCN Circulars about the burst (now ≥ 14). Thresholds are recalculated monthly.
Relayed automatically from NASA's General Coordinates Network.

Log in or register to post.

The whole thread (28 posts)

Related discussions