TITLE: GCN CIRCULAR NUMBER: 31555 SUBJECT: Konus-Wind detection of GRB 220130A DATE: 22/02/06 12:47:42 GMT FROM: Dmitry Frederiks at Ioffe Institute D. Frederiks, A.Lysenko, A. Ridnaia, D. Svinkin, A. Tsvetkova, M. Ulanov, and T. Cline, on behalf of the Konus-Wind team, report: The long GRB 220130A (GECAM detection: Zhao et al., GCN Circ. 31533; Fermi-GBM detection: Lesage et al., GCN Circ. 31538; IPN localization: Svinkin et al., GCN 31548) triggered Konus-Wind (KW) at T0=83760.565 s UT (23:16:00.565). The burst light curve shows a weak emission episode in the interval from ~T0-90 s to ~T0-50 s, followed by a bright, multi-peaked pulse, which starts at ~T0-40 s and has a total duration of ~130 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/GRB220130_T83760/ As observed by Konus-Wind, the burst had a fluence of (7.6 ± 1.2)x10^-5 erg/cm^2 and a 64-ms peak energy flux, measured from T0 + 13.824 s, of (4.9 ± 1.2)x10^-6 erg/cm^2/s (both in the 20 keV - 10 MeV energy range). The time-integrated spectrum (measured from T0 to T0+98.560 s) is best fit in the 20 keV - 15 MeV range by the GRB (Band) function with the following model parameters: the low-energy photon index alpha = -0.74 (-0.13,+0.15), the high energy photon index beta = -2.50 (-0.53,+0.25), the peak energy Ep = 236 (-25,+28) keV, chi2 = 89/97 dof. The spectrum near the peak count rate (measured from T0+8.448 s to T0+16.640 s) is best fit in the 20 keV - 15 MeV range by the GRB (Band) function with the following model parameters: the low-energy photon index alpha = -0.78 (-0.14,+0.22), the high energy photon index beta = -2.59 (-0.70,+0.34), the peak energy Ep = 397 (-95,+86) keV, chi2 = 110/97 dof. All the quoted errors are estimated at the 90% confidence level. All the presented results are preliminary.