GCN Circular 116

D. A. Smith and A. M. Levine, on behalf of the RXTE/ASM teams at
MIT and NASA/GSFC, report:

"Although the ASM did not observe any of the BATSE-detected events from
SGR 1627-41, during the interval from Jun 15 to Jun 19, three short
(<~1 s) burst events were detected in SSC 3 at May 17.943917,
17.954243, and 18.010803 (UTC).

During the first event, the original BATSE location (GCN 107
Not found
 
 
) was
outside the FOV of the ASM.  The full width of the FOV of SSC 3 during
the first event restricts the range of declination values along the
IPN annulus (GCN 115
Not found
 
 
) between -44.4 and -56.4 degrees.  This is fully
consistent with the revised BATSE position reported in GCN 113
Not found
 
 
.

Due to low signal-to-noise, our standard cross-correlation technique
was unable to isolate these events in our position data, but given the
IPN annulus, we were able to search along it for a best-fit location.
We find a minimum reduced chi-squared at R.A. = 16h35m50s, Decl.=
-47o32' for event 1 and R.A. = 16h35m50s, Decl.= -47o39' for event 2
(1-sigma error of 4' in Decl. in both cases).  Both positions are
consistent with the location of the SNR (g337.0-0.1) mentioned in
GCN 113
Not found
 
 
.

If we assume these bursts are coming from SNR G337.0-0.1, we can use
its location to measure the burst fluxes:

Event      Fluence            Peak Flux (2-12 keV)
      (10^{-7} erg/cm^2)      (10^{-7} erg/cm^2/s)
    1.5-3    3-5    5-12 kev     (1-s averages)

1   <0.6    <0.4    2.1 (+- 0.3)      1.1
2   <0.8    <0.4    2.9 (+- 0.5)      2.8

Upper limits are 2-sigma.  We do not yet have pointing information for
the observation of the third burst."