TITLE:   GCN CIRCULAR
NUMBER:  38429
SUBJECT: Konus-Wind detection of GRB 241130A
DATE:    24/12/03 12:50:12 GMT
FROM:    Dmitry Frederiks at Ioffe Institute <fred@mail.ioffe.ru>

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 241130A (Fermi-GBM detection:
The Fermi GBM team, GCN 38405, Sharma et al., GCN 38421;
EIRSAT-1 GMOD Detection: McDermott et al., GCN 38423;
IPN triangulation: Ridnaia et al., GCN 38424)
triggered Konus-Wind (KW) at T0=83628.376 s UT (23:13:48.376).

The burst light curve shows a single, FRED-like pulse,
which starts at ~T0-0.5 s, peaks at ~T0+0.3 s,
and has a total duration of ~10 s.
The emission is seen up to ~2 MeV.

The Konus-Wind light curve of this GRB is available at
http://www.ioffe.ru/LEA/GRBs/GRB241130_T83628/

As observed by Konus-Wind, the burst had
a fluence of (1.52 ± 0.21)x10^-5 erg/cm^2 and
a 64-ms peak energy flux, measured from T0 + 0.384 s,
of (1.77 ± 0.22)x10^-5 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 power law with exponential
cutoff (CPL) model: dN/dE ~ (E^alpha)*exp(-E*(2+alpha)/Ep)
with  alpha = -1.25(-0.08,+0.09) and Ep = 663(-128,+185) keV (chi2 = 66/81 dof).
Fitting this spectrum by a Band function yields the same values of alpha and Ep,
and an upper limit on the high energy photon index beta of -2.4 (chi2 = 66/80 dof).

All the quoted errors are estimated at the 90% confidence level.
All the presented results are preliminary.