VizieR Online Data Catalog: HETE Trigger Information (Ricker+, 2001)

At 15:54:53.123 UT on 23 June, the HETE FREGATE and WXM instruments detected and localized an intense burst from SGR1806-20, a soft gamma-ray repeater. This event, disseminated in near real time as a GCN Alert (HETE BID_1566; see http://gcn.gsfc.nasa.gov/gcn/hete_grbs.html ), is the second burst localized from this source in the past week. (The first burst was reported in GCN Circular #1068). The coordinates (J2000) of the 23 June burst are:

RA=272.1460{deg} (18:08:35.02), DE=-20.3658{deg} (-20:21:56)

The error circle for this localization is 6 arcmin in radius. SGR1806-20 lies 3.1arcmin from the HETE position.

The burst duration in the 8-40keV band was ~200ms, comprised of two peaks each <100ms in duration. A total of 2250 counts were detected during that interval, corresponding to a fluence of ~4x10^-7ergs/cm². The peak flux was >6x10^-6erg/cm²/s (i.e. >200Crab-flux).

Follow-up observations of this transient are encouraged.

Additional information on this burst detection (including light curves), as well as for the HETE mission, will be available at: http://space.mit.edu/HETE/

(3 data files).