[vsnet-grb-info 21646] GRB190114C: ATCA detection of the radio afterglow

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  23745
SUBJECT: GRB190114C: ATCA detection of the radio afterglow
DATE:    19/01/17 09:16:12 GMT
FROM:    Steve Schulze at U of Iceland  <sts30 at hi.is>

S. Schulze (WIS), G. Anderson (ICRAR-Curtin), A. Moin (UAEU), E. Troja
(UMD & NASA/GSFC), M. Wieringa (CSIRO), J. Stevens (CSIRO), S. Klose (TLS
Tautenburg),  M. Bell (UTS), A. de Ugarte Postigo (HETH/IAA-CSIC and
DARK/NBI), S. Dichiara (UMD & NASA/GSFC),  L. Izzo (HETH/IAA-CSIC) D. A.
Kann (HETH/IAA-CSIC), M. Michalowski (AOI-AMU), J. Miller-Jones
(ICRAR-Curtin), K. Misra (ARIES), S. Nasri (UAEU), D. A. Perley (LJMU), L.
Piro (INAF IAPS Rome),  L. Resmi (IIST), R. Ricci (IRA Bologna),  and C.
C. Thoene (HETH/IAA-CSIC) report:

On 16 January 2019, we observed the field of GRB 190114C (Gropp et al. GCN
23688, Hamburg et al. GCN 23707) with the Australia Telescope Compact
Array (ATCA) at the central frequencies of 5.5, 9, 17 and 19 GHz each with
bandwidth of 2 GHz. The first data were obtained at 7:08 UTC.

At the position of the optical counterpart (Gropp et al., GCN 23688;
Tyurina et al. GCN 23690; Lipunov et al. GCN 23693; Selsing et al., GCN
23695; Izzo et al., GCN 23699; Bolmer et al., GCN 23702), we detect a
radio source with a brightness of approximately 2 mJy.

Further observations are planned.

We thank the CSIRO staff for approving and executing these observations.