[vsnet-grb-info 5116] Recent SGR1806-20 Activity

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  6822
SUBJECT: Recent SGR1806-20 Activity
DATE:    07/09/24 20:45:04 GMT
FROM:    Kevin Hurley at UCBerkeley/SSL  <khurley at ssl.berkeley.edu>

S. Golenetskii, R. Aptekar, E. Mazets, V. Pal'shin, D. Frederiks, P.
Oleynik, M. Ulanov and T. Cline, on behalf of the Konus-Wind and
Konus-A teams,

D. Palmer, S. Barthelmy, J. Cummings, N. Gehrels, and H. Krimm, on behalf
of the Swift-BAT team,

K. Hurley, A. von Kienlin, G. Lichti, A. Rau, D. Gotz, and S.
Mereghetti, on behalf of the INTEGRAL GRB team,

M. Feroci, P. Soffitta and Y. Evangelista, on behalf of the AGILE team,

K. Yamaoka, M. Ohno, Y.E. Nakagawa, Y. Fukazawa, T. Takahashi, M.
Tashiro, Y. Terada, T. Murakami, and K. Makishima, on behalf of the
Suzaku WAM GRB team,

report:

SGR1806-20 has become very active since September 14 (Barthelmy et al.
GCN 6804).  The following is a partial list of bursts observed by some
of the IPN spacecraft (some weaker IBIS events did not trigger the INTEGRAL
Burst Alert Service).   "Loc" means that the burst was localized by
triangulation to at least a relatively narrow annulus, or by the Swift
BAT or by IBIS.  A "no" in this column means that the event has only
been localized to a relatively wide ecliptic latitude band.

INTEGRAL (GCN 6815) and Chandra target of opportunity observations of
this source are planned, and we encourage supporting observations at
all wavelengths.

Date		Time		Fluence	Observed by 		Loc
                                20-200  (at least)
                                 keV
-------------------------------------------------------------------
20070914	10:46:02	8.2E-7	BAT,IBIS,KW		y
20070914	14:54:47	1.6E-5	KW,KA,SA		y
20070914	14:58:44	1.0E-6	KW			no
20070914	19:57:57	2.8E-6	BAT,KA			y
20070914	21:03:36	4.5E-7	KW			no
20070916	07:08:38	6.5E-7	IBIS,KW			y
20070916	09:48:08	1.0E-6	IBIS,KW			y
20070918	17:08:50	1.6E-5	KW,SA,SPI-ACS,SUZ	y
20070919	10:01:51	1.5E-6	IBIS,KW			y
20070919	15:13:04	6.5E-7	KW			no
20070919	16:01:13	2.4E-6	BAT,KA,KW		y
20070919	16:54:44	9.6E-7	KW			no
20070919	19:34:50	9.0E-7	IBIS,KW			y
20070919	20:45:10	?	BAT,IBIS		y
20070920	04:30:11	1.9E-6	IBIS,KW 		y
20070921	07:11:59	1.4E-6	IBIS,KW			y
20070921	11:45:35	4.0E-7	KW			no
20070923	12:46:15	2.6E-6	KW,KA			no
------------------------------------------------------------------

Some Abbreviations:

BAT: Swift Burst Alert Telescope
IBIS: Imager on Board the INTEGRAL Satellite
KA: Konus-A (Cosmos 2421)
KW: Konus-Wind
SA: Super-AGILE
SPI-ACS: Anticoincidence System of the INTEGRAL Spectrometer
SUZ: Suzaku WAM