[vsnet-grb-info 24905] GRB 200205B: ESO/NTT near-infrared imaging
GCN Circulars
gcncirc at capella2.gsfc.nasa.gov
Fri Feb 7 07:23:53 JST 2020
TITLE: GCN CIRCULAR
NUMBER: 27004
SUBJECT: GRB 200205B: ESO/NTT near-infrared imaging
DATE: 20/02/06 22:22:43 GMT
FROM: Daniele B Malesani at DTU Space <malesani at space.dtu.dk>
D. B. Malesani (DTU Space), D. M. Russell, P. Saikia, M. C. Baglio (NYU
Abu Dhabi), report:
The optical counterpart of GRB 200205B (Evans et al., GCN 26993;
Strausbaugh & Cucchiara, GCN 26995; Vielfaure et al., GCN 26998) was
observed with the ESO New Technology Telescope equipped with the SofI
imager on two different epochs during the night of 2020 Feb 5-6.
Observations were carried out under ESO program 0104.D-0945(A) (PI Russell).
The afterglow is well detected in the first epoch in the J and Ks
filters, and is marginally detected in the second observation.
Calibrated to the 2MASS survey, we obtain the following magnitudes (Vega):
K = 18.07 +- 0.10 on Feb 6.164 UT (0.356 days after the GRB)
J = 19.43 +- 0.10 on Feb 6.145 UT (0.338 days after the GRB)
J = 20.57 +- 0.33 on Feb 6.368 UT (0.561 days after the GRB)
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