GCN Circular 880

Subject

GRB001109, Radio observations

Event

Date

2000-11-10T00:10:39Z (26 years ago)

From

Greg Taylor at NRAO <gtaylor@aoc.nrao.edu>

G. B. Taylor, D. A. Frail (NRAO), and J. S. Bloom (Caltech) report on
behalf of a larger collaboration:

"We have imaged the entire 2.5 arcmin WFC error circle of GRB 001109
(GCN 879Loading...
 
 ) with the VLA at 8.47 GHz on UT 2000 Nov. 9.80. We detect one
radio source which we designate VLA J1830+5518.  The coordinates of
VLA J1830+5518 are: RA = 18h30m06.51s, DEC = 55d18'35.7" (equinox
J2000) with conservative errors of 0.1 arcsec in each coordinate.  The
flux density on Nov. 9.8 is 236 +/- 31 microJy. The size of VLA
J1830+5518 is less than 0.4 arcsec.  No source is detected in the NRAO
VLA Sky Survey (NVSS; Condon et al. 1998, AJ, 115, 1693) above their
flux limit of 1 mJy at 1.4 GHz.  The density of sources on the sky
stronger than 250 microJy at 8.4 GHz is 0.0145 arcmin**-2.  We
computed an astrometric solution for the DSS-2 image of the field
using the USNO-A2.0 catalogue and found no obvious optical point
source at the position of the radio object."

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