TITLE: GCN CIRCULAR NUMBER: 45103 SUBJECT: GRB 260706A: SVOM/ECLAIRs refined analysis DATE: 26/07/07 15:08:36 GMT FROM: SVOM_group <svomgroup@bao.ac.cn> Authors: S. Guillot, M. Brunet, J. Alaux (IRAP), F. Daigne, M. Pillas (IAP), report on behalf of the SVOM/ECLAIRs team: Using the event-by-event data downloaded through the X-band ground station, we report further analysis of SVOM/ECLAIRs observations of GRB 260706A (SVOM Burst id sb26070606, GCN #45089) with trigger time T0 = 2026-07-06T16:12:23 UTC, which was also detected by Fermi/GBM (GCN #45088). The burst that triggered ECLAIRs onboard shows a multiple peak lightcurve, and the burst duration is T90 = 23.41 +0.64/-0.89 s in the 4-120 keV energy band. The time-averaged spectrum from T0 to T0+24 s in the 5-120 keV energy range is best fitted by a cut-off powerlaw model with alpha = -1.4 +/- 0.1 and Epeak = 38.1 +/- 6.4 keV. With this model, the 4-120 keV fluence is (3.5 +/- 0.3)e-6 erg/cm^2 and the 4-120 keV photon flux is 5.9 +/- 0.3 ph/cm^2/s. All the quoted errors are at the 68% confidence level. The Space-based multi-band astronomical Variable Objects Monitor (SVOM) is a China-France joint mission led by the Chinese National Space Administration (CNSA), French Space Agency (CNES), and the Chinese Academy of Sciences (CAS), which is dedicated to observing gamma-ray bursts and other transient phenomena in the energetic universe. ECLAIRs was developed jointly by CNES, CEA-IRFU, CNRS-IRAP, CNRS-APC. The SVOM/ECLAIRs point of contact for this burst is: Sebastien Guillot (IRAP) (sebastien.guillot at utoulouse.fr) View this GCN Circular online at https://gcn.nasa.gov/circulars/45103. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...