GCN Circular 23739
Subject
GRB 190114A: NOEMA detection of the mm afterglow
Date
2019-01-16T14:51:27Z (5 years ago)
From
Antonio de Ugarte Postigo at IAA-CSIC <deugarte@iaa.es>
A. de Ugarte Postigo (HETH/IAA-CSIC and DARK/NBI), M. Bremer,
O. Feher (both IRAM), S. Schulze (Weizmann), C. C. Thoene,
L. Izzo, D. A. Kann, M. Blazek, K. Bensch (all HETH/IAA-CSIC),
D. A. Perley (LJMU), S. Martin (ALMA), I. de Gregorio-Monsalvo
(ESO), M. Michalowski (AOI-AMU), D. B. Malesani (DARK/NBI,
DAWN/NBI) R. Sanchez-Ramirez (INAF-IAPS) report:
We observed the afterglow of GRB 190114A (LaPorte et al.,
GCN 23677, Siegel et al. GCN 23678), at a redshift of z = 3.3765
(de Ugarte Postigo et al. GCN 23680) with NOEMA at 76, 92, 136
and 152 GHz. Observations started at 21:02 UT on 15 January,
42 hrs after the GRB. The afterglow is well detected at all
frequencies and had a flux density of 0.9 mJy at 92 GHz.
We derive the following refined coordinates for the afterglow:
R.A.(J2000): 04:22:10.58
Dec.(J2000): +02:11:28.4
with an error of +/- 0.1"
Further follow-up observations are encouraged