Long-duration GRB 260829A detected with multiple pulses and significant emissions across various energies.

AI Summary

GRB 260829A was detected by Fermi GBM and multiple other observatories including Konus-Wind, GECAM-B, and SVOM-GRM. The burst exhibited multi-peaked structures with a T90 duration of around 28 seconds and significant emissions up to 4 MeV, indicating a highly energetic event.

Measurements

Notices (1)

Fermi GBM — GRB · Sat, 29 Aug 2026 06:08:09 GMT

GCN Circulars (8)

GCN-45496 — GRB 260829A · Wed, 02 Sep 2026 11:12:15 GMT
The Konus-Wind instrument detected a long-duration gamma-ray burst (GRB 260829A) on September 2, 2026, at 06:08:30.076 UT. The burst had a total duration of approximately 34.8 seconds and was observed up to 4 MeV, with significant emissions detected by multiple other instruments.

GCN-45495 — GRB 260829A · Wed, 02 Sep 2026 10:51:42 GMT
The SVOM/GRM instrument detected a gamma-ray burst (GRB 260829A) on August 29, 2026, which was also observed by Fermi/GBM and GECAM-B. The burst consisted of multiple pulses with a T90 duration of 28 seconds and a power law index of -2.11, indicating a significant energetic event.

GCN-45485 — GRB 260829A · Tue, 01 Sep 2026 11:39:37 GMT
A gamma-ray burst, GRB 260829A, was detected by the AstroSat CZTI instrument on August 29, 2026, at 06:08:31.7 UTC. This event was also independently confirmed by multiple other detectors including Fermi, BALROG, GECAM-B, and IPN triangulation.

GCN-45476 — GRB 260829A · Mon, 31 Aug 2026 19:15:43 GMT
The long-duration gamma-ray burst GRB 260829A was detected by multiple observatories including Fermi, Konus-Wind, GECAM-B, and Mars-Odyssey at 06:08:09 UT. The burst has been triangulated to a 3 sigma localization region of 5.2 square degrees, with a maximum dimension of 31 degrees and a minimum of 10 arcminutes.

GCN-45470 — GRB 260829A · Sun, 30 Aug 2026 15:44:43 GMT
GECAM-B detected a long gamma-ray burst, GRB 260829A, on August 29, 2026, at 06:08:10.450 UTC, which was also observed by Fermi/GBM. The burst lasted approximately 47 seconds and had a fluence of 2.31e-05 erg/cm^2 in the 10-1000 keV range.

GCN-45467 — GRB 260829A · Sat, 29 Aug 2026 14:12:23 GMT
On 29 August 2026, the Fermi Gamma-ray Burst Monitor detected GRB 260829A, a gamma-ray burst with a duration of 26.4 seconds and a peak photon flux of 19.1 ph/s/cm^2. The event's spectral analysis, including a Band function fit with Epeak = 260 keV, provides preliminary insights into the burst's characteristics.

GCN-45465 — GRB 260829A · Sat, 29 Aug 2026 06:34:56 GMT
A gamma-ray burst, GRB 260829A, was detected by the Fermi Gamma-ray Burst Monitor (GBM) on August 29, 2026, at 06:08:09 GMT. The event was localized using the BALROG algorithm, with a best-fit position at RA(2000.0) = 240.0 deg and Decl.(2000.0) = -30.5 deg, and an estimated total error radius of 3.5 degrees.

GCN-45464 — GRB 260829A · Sat, 29 Aug 2026 06:18:41 GMT
The Fermi Gamma-ray Burst Monitor (GBM) detected a likely long gamma-ray burst (GRB 260829A) on 29 August 2026 at 06:08:09 UT. The event was located at RA = 242.3, Dec = -34.6 (J2000) with a statistical uncertainty of 1.0 degrees, and the angle from the Fermi LAT boresight was 47.0 degrees.