[vsnet-grb-info 25746] GRB 200529A: NOT optical afterglow

[GCN Circulars]

TITLE:   GCN CIRCULAR
NUMBER:  27846
SUBJECT: GRB 200529A: NOT optical afterglow
DATE:    20/05/29 01:39:44 GMT
FROM:    Daniele B Malesani at DTU Space  <malesani at space.dtu.dk>

Daniele B. Malesani (DTU Space), Tapio Pursimo (NOT), Charles L. 
Steinhardt (DAWN/NBI), report:

We observed the field of GRB 200529A (D'Elia et al., GCN 27845) using 
the Nordic Optical Telescope equipped with the ALFOSC camera.

In a single 300-s image, starting on May 29.052 UT (18.9 min after the 
GRB), we detect a bright point source just outside the currently 
available XRT position, which is not visible in the archival Pan-STARRS 
images of the same field. We measure for this object the following 
position (J2000):

RA = 15:55:03.21
Dec = -11:04:26.2

By comparison with nearby stars from the Pan-STARRS catalog, we measure 
a magnitude r = 20.00 +- 0.02.

We conclude that this object is the optical afterglow of GRB 200529A.