GCN Circular 1050
Subject
Millimeter observation of SGR 1900+14
Date
2001-04-26T08:55:11Z (25 years ago)
From
Michael Bremer at IRAM Grenoble <bremer@iram.fr>
Millimeter observations of SGR 1900+14
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M. Bremer, IRAM (Grenoble) and A.J. Castro-Tirado, IAA-CSIC (Granada)
and LAEFF-INTA (Madrid) report:
We have observed the position of the proposed SGR 1900+14 radio
counterpart reported by Frail et al. 1999 (Nature 398, 127) with
the IRAM Plateau de Bure Interferometer on April 24, 2001 between
UT 1:13 - 3:04 (i.e. approximately six days after the giant flare
reported by Guidorzi et al. in GCN 1041).
The source was not detected. The following fluxes and 1-sigma errors
(corrected for atmospheric decorrelation) were measured on the
phase center:
92.772 GHz: -0.64 +- 0.60 mJy/beam (beam: 10.4" x 5.2" by PA=-55 deg.)
217.829 GHz: -2.7 +- 2.8 mJy/beam (beam: 4.5" x 2.3" by PA=-47 deg.)
No bright sources were detected within the field of view of the
primary beams (53" and 23", respectively).