Fourth Epoch observations of SGR 1806-20
ATel #380; P. B. Cameron (Caltech) and S. R. Kulkarni (Caltech)
on 6 Jan 2005; 21:29 UT
Credential Certification: P. Brian Cameron (pbc@astro.caltech.edu)
Subjects: Radio, Neutron Star, Soft Gamma-ray Repeater, Transient, Variables, Pulsar
We observed a fourth epoch of the position of SGR 1806-20
with the Very Large Array (VLA) in A-configuration on 2005
Jan 6.77 UT (t ~ 9.9 days after the giant flare. See GCN #2920,
#2928, #2929, #2933, #2934, #2935, ATEL #373, #375).
We find the following preliminary flux densities:
Freq. Â Â Â Flux Density
(GHz) Â Â (mJy)
===========================
1.46 Â Â Â 96 +/- 2
4.86 Â Â Â 39 +/- 2
8.46 Â Â Â 24 +/- 1
===========================
Error Bars are 1 sigma. We find an angular size at 8.46 GHz of about 80
mas. We see no variation in this diameter over the last 4 days.
The National Radio Astronomy Observatory is operated by Associated
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Foundation.