Konus-Wind detection of GRB 241018A

The long GRB 241018A (SVOM detection: Atteia et al., GCN 37812) triggered Konus-Wind (KW) at T0=42881.464 s UT (11:54:41.464). The burst light curve shows a multi-peaked structure, which starts at ~T0-3 s, peaks at ~T0+4 s, and has a total duration of ~12 s. The emission is seen up to ~3 MeV. The Konus-Wind light curve of this GRB is available at http://www.ioffe.ru/LEA/GRBs/GRB241018_T42881/ As observed by Konus-Wind, the burst had a fluence of (1.22 ± 0.18)x10^-5 erg/cm^2 and a 64-ms peak energy flux, measured from T0 + 4.224 s, of (5.34 ± 0.64)x10^-6 erg/cm^2/s (both in the 20 keV - 10 MeV energy range). The time-integrated spectrum (measured from T0 to T0+8.448 s) is best fit in the 20 keV - 15 MeV range by a GRB (Band) function with the following model parameters: the low-energy photon index alpha = -1.12 (-0.21,+0.27), the high energy photon index beta = -2.49 (-0.29,+0.18), the peak energy Ep = 110 (-14,+16) keV, chi2 = 78/86 dof. All the quoted errors are estimated at the 90% confidence level. All the presented results are preliminary