Skip to main content
New Announcement Feature, Code of Conduct, Circular Revisions. See news and announcements

GCN Circular 12664

GRB 111209A - ATCA 34GHz upper limit
2011-12-12T03:58:18Z (12 years ago)
Paul Hancock at U of Sydney <>
Paul J. Hancock, Tara Murphy, Bryan Gaensler (U of Sydney), Ashley 
Zauderer (Harvard)

On the 11th December 04:44-05:50UT (T=+1.9days) we observed GRB 111209A 
(GCN12632) with the Australia Telescope Compact Array (ATCA) at 34GHz. 
We do not detect any radio emission consistent with the GRB optical 
position (GCN12642). We place a 3sigma upper limit of 132uJy on the flux 
of the afterglow. Further observations are planned.

We thank the staff of the ATCA for their help in organising these 
Looking for U.S. government information and services? Visit