GCN Circular 2633

S. Golenetskii, R.Aptekar, E. Mazets, V. Pal'shin, D. Frederiks
on behalf of Konus-Wind and Helicon/Coronas-F teams,

T. Cline on behalf of the Konus-Wind team, and

A. Rau, A. von Kienlin, G. Lichti on behalf of the INTEGRAL SPI-ACS
GRB team report:

Since last SGR burst 040615, listed in GCN 2611
Not found
 
 
,
Konus-Wind has detected seven SGR-like bursts
in the trigger mode:

   Date   Time,     Duration,   Fluence,       Peak Flux,           kT*
          s UT          s      (20-200 keV)   (20-200 keV)          keV
                               ergs/cm2       ergs/cm2 s
-----------------------------------------------------------------------
040617   48377.157  0.104  (1.16 +/- 0.04)E-6 (2.28 +/- 0.14)E-5 23+/-3

040622   70209.587  0.332  (5.49 +/- 0.09)E-6 (3.59 +/- 0.18)E-5 17+/-1

040623   81361.257  0.440  (2.49 +/- 0.07)E-6 (1.74 +/- 0.13)E-5 17+/-2

040707   17546.478  0.696  (7.65 +/- 0.12)E-6 (1.86 +/- 0.10)E-5 18+/-1

040719   45188.316  0.264  (3.81 +/- 0.07)E-6 (2.44 +/- 0.21)E-5 20+/-2

040723   42259.178  0.192  (7.51 +/- 0.11)E-6 (5.63 +/- 0.19)E-5 20+/-1

040728     544.709  0.328  (4.36 +/- 0.09)E-6 (2.64 +/- 0.13)E-5 15+/-2
------------------------------------------------------------------------
* - the last column contains the values of spectral parameter kT
         for the OTTB spectral model: dN/dE ~ E^{-1} exp(-E/kT)

The last burst was also detected by INTEGRAL SPI-ACS at 539.761 s UT.
We have triangulated it to an annulus centered at
RA(2000) = 302.741 deg, Decl(2000) = -19.181 deg,
whose radius is 28.900 +/- 0.478 deg (3 sigma).
As the center line of this annulus passes 0.14 degrees from
the position of SGR 1806-20, we believe that it is the source of this
event.

The Konus ecliptic latitude response indicates
that the source of the remaining bursts is near ecliptic plane,
so we suppose, that they are also originated from SGR 1806-20.