GCN Circular 25589
Subject
GRB 190829A: NOEMA detection of the mm afterglow
Date
2019-08-31T15:01:35Z (5 years ago)
From
Alexander Kann at IAA-CSIC <kann@iaa.es>
A. de Ugarte Postigo (HETH/IAA-CSIC and DARK/NBI), M. Bremer (IRAM), D.
A. Kann (HETH/IAA-CSIC), S. Schulze (Weizmann), C. C. Thoene, M. Blazek,
K. Bensch, J. F. Agui (all HETH/IAA-CSIC), L. Izzo (DARK/NBI), 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 190829A (Fermi GBM team, GCN #25551;
Dichiara et al., GCN #25552), at a redshift of z = 0.0785 (Valeev et al.
GCN #25565) with NOEMA at 90 GHz. Observations started at 01:26 UT on 31
August, 29.48 hrs after the GRB. The afterglow is well detected and had
a flux density of 6.3 mJy at 90 GHz.
We derive the following refined coordinates for the afterglow:
RA. (J2000): 02:58:10.510
Dec (J2000): -08:57:28.44
with an error of +/- 0".1.