[vsnet-grb-info 16040] GRB 150110B: AMI 15 GHz detection of possible radio counterpart

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  17322
SUBJECT: GRB 150110B: AMI 15 GHz detection of possible radio counterpart
DATE:    15/01/20 17:33:34 GMT
FROM:    Gemma Anderson at U of Oxford  <gemma.anderson at astro.ox.ac.uk>

G. E. Anderson, R. P. Fender, T. D. Staley (University of Oxford),
A. J. van der Horst (George Washington University), A. Rowlinson (CASS)

We observed the position of GRB 150110B (Evans et al., GCN 17291)
at 15 GHz with the Arcminute Microkelvin Imager (AMI-LA) starting on
2015 Jan 14.466 to 14.632 UT and 2015 Jan 16.415 to Jan 16.581,
corresponding to 3.5 and 5.5 days post-burst. On these two dates we
have detected a radio source coincident with the Swift-XRT position
(Beardmore et al., GCN 17294) with a preliminary flux of 0.25 +/- 0.05 mJy
and 0.47 +/- 0.05 mJy, respectively. There are no catalogued radio sources
at this position.

An earlier observation was conducted on 2015 Jan 11.434 to 11.580 UT,
corresponding to 0.5 days post-burst, yielding a 3 sigma flux upper limit
of 0.13 mJy.

Further AMI monitoring is planned. We thank the AMI staff for scheduling these observations.