TITLE: GCN CIRCULAR NUMBER: 36886 SUBJECT: Konus-Wind detection of GRB 240715A DATE: 24/07/16 12:54:31 GMT FROM: Anna Ridnaia at Ioffe Institute <ridnaia@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 240715A (Fermi-GBM detection: The Fermi GBM team, GCN 36866; de Barra & Meegan, GCN 36875; IPN triangulation: Kozyrev at al., GCN 36872; SVOM/GRM In-Flight Trigger: Huang et al., GCN 36881) triggered Konus-Wind at T0=20645.475 s UT (05:44:05.475). The burst light curve shows a single pulse, which starts at ~T0 and has a total duration of ~0.2 s. The emission is seen up to ~10 MeV. The Konus-Wind light curve of this GRB is available at http://www.ioffe.ru/LEA/GRBs/GRB240715_T20645/ As observed by Konus-Wind, the burst had a fluence of 7.00(-0.97,+1.02)x10^-6 erg/cm2, and a 16-ms peak flux, measured from T0+0.090 s, of 7.55(-1.72,+1.76)x10^-5 erg/cm2/s (both in the 20 keV - 10 MeV energy range). The time-averaged spectrum of the burst (measured from T0 to T0+0.192 s) is best fit in the 20 keV - 10 MeV range by a power law with exponential cutoff model: dN/dE ~ (E^alpha)*exp(-E*(2+alpha)/Ep) with alpha = -0.73(-0.13,+0.14) and Ep = 1740(-328,+418) keV (chi2 = 24/48 dof). Fitting by a GRB (Band) model yields the same alpha and Ep, and an upper limit on the high energy photon index: beta < -2.4 (chi2 = 24/47 dof). 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/36886. --- To unsubscribe, open this link in a web browser: https://gcn.nasa.gov/unsubscribe/eyJhbGciOiJIUzI1NiJ9.eyJlbWFpbCI6InZzbmV0LW...