GRB 261026A detected by SVOM with optical counterparts observed

AI Summary

The SVOM satellite detected GRB 261026A, localizing it with high precision. Multiple telescopes including SVOM/VT, KAIT, and Palomar/WINTER confirmed the optical afterglow within minutes of the burst.

Measurements

Notices (1)

SVOM — GRB · Mon, 26 Oct 2026 06:09:27 GMT

GCN Circulars (5)

GCN-46041 — GRB 261026A · Mon, 26 Oct 2026 10:19:45 GMT
Astronomers observed the field of GRB 261026A in the near-infrared J band using the Palomar 1-m telescope with the WINTER camera, detecting a source at the optical counterpart position with a magnitude of J = 18.55 +- 0.1 mag (AB). This observation was part of a follow-up effort to study the afterglow of the gamma-ray burst.

GCN-46035 — GRB 261026A · Mon, 26 Oct 2026 08:08:42 GMT
The SVOM satellite detected a gamma-ray burst (GRB 261026A) and identified an optical afterglow at coordinates RA 22h29m24.76s, Dec +27d01m34.4s with magnitudes VT_B = 19.47 ± 0.02 and VT_R = 18.70 ± 0.01. This detection is consistent with previous reports and was made using the SVOM/VT telescope.

GCN-46034 — GRB 261026A · Mon, 26 Oct 2026 08:03:03 GMT
The Katzman Automatic Imaging Telescope (KAIT) at Lick Observatory detected the optical counterpart of GRB 261026A, an uncatalogued source with a magnitude of 18.1 in the R filter, 290 seconds after the burst. The source continued to fade in subsequent observations, confirming it as the optical counterpart of the gamma-ray burst.

GCN-46033 — GRB 261026A · Mon, 26 Oct 2026 07:32:39 GMT
The SVOM/COLIBRÍ (FM-GFT) telescope detected an uncatalogued optical source consistent with the error circle of GRB 261026A, with a preliminary magnitude of 18.79 in the r filter. This detection occurred between 115 and 858 seconds after the initial trigger, and further observations are encouraged.

GCN-46030 — GRB 261026A · Mon, 26 Oct 2026 06:36:32 GMT
The SVOM satellite detected a gamma-ray burst, GRB 261026A, on October 26, 2026, at 06:09:37 UTC. The burst was localized to RA 22h29m19.52s, Dec 27d02m54.66s with a 90% confidence radius of 7.22 arcmin, and was detected by multiple instruments on the SVOM spacecraft.