TITLE: GCN CIRCULAR NUMBER: 35699 SUBJECT: Konus-Wind detection of GRB 240125A DATE: 24/02/07 14:51:18 GMT FROM: Dmitry Svinkin at Ioffe Institute <svinkin@mail.ioffe.ru> A. Ridnaia, D. Frederiks, A. Lysenko, D. Svinkin, A. Tsvetkova, M. Ulanov, and T. Cline, on behalf of the Konus-Wind team, report: The short-duration GRB 240125A (Glowbug gamma-ray detection: Cheung et al., GCN 35630; AstroSat CZTI detection: Joshi et al., GCN 35637; CALET CGBM detection: Marrocchesi et al., GCN 35639; GRBAlpha detection: Dafcikova et al., GCN 35645; IPN triangulation: Kozyrev et al., GCN 35652) triggered Konus-Wind at T0=34503.601 s UT (09:35:03.601). The burst light curve shows a multipeaked structure which starts at ~T0-0.5 s and has a total duration of ~1.0 s. The Konus-Wind light curve of this GRB is available at http://www.ioffe.ru/LEA/GRBs/GRB240125_T34503/ As observed by Konus-Wind, the burst had a fluence of 4.79(-1.52,+5.06)x10^-6 erg/cm2, and a 16-ms peak flux, measured from T0-0.220 s, of 1.13(-0.57,+1.27)x10^-5 erg/cm2/s (both in the 20 keV - 10 MeV energy range). Since the main fraction of the burst emission was detected before the trigger, the spectral analysis was performed using the KW 3-channel light curve data. Modelling the KW 3-channel time-integrated spectrum (measured from T0-0.512 s to T0+0.448 s) by a power law with exponential cutoff model: dN/dE ~ (E^alpha)*exp(-E*(2+alpha)/Ep), yields alpha = 0.01(-0.59,+1.53) and Ep = 982(-418,+1876) keV. All the quoted errors are at the 90% confidence level. All the quoted values are preliminary. View this GCN Circular online at https://gcn.nasa.gov/circulars/35699. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...