GCN Circular 979
Subject
GRB 010220: Near-IR Observations
Date
2001-02-23T13:39:35Z (24 years ago)
From
Angelo Antonelli at Obs. Astro. di Roma <angelo@coma.mporzio.astro.it>
G. Li Causi, A. Di Paola, L.A. Antonelli, S. Puccetti, Osservatorio
Astronomico di Roma, Italy, G. Valentini, Osservatorio Astronomico
di Teramo, Italy, on behalf of a larger collaboration report:
"On Feb. 21 and Feb. 22 we observed the WFC error circle of GRB 010220
(Piro, GCN #953 and Manzo et al. GCN #956) in J and K band with the
AZT-24 1.1-meter telescope at Campo Imperatore (AQ).
At a preliminary investigation of the images we do not find any
obvious candidate for the GRB 010220 afterglow. The limiting
magnitudes reached in the four observations are reported in the
table below:
Date
Band Feb 2001(UT) Lim.Mag. Texp(s) S/N
===========================================
J 21.8841 18.4+/-0.2 2700 3
K 21.9258 17.5+/-0.2 3000 3
K 22.7627 17.1+/-0.2 2200 3
J 22.7990 18.6+/-0.2 2700 3
Due to the contamination from the nearby bright star we are not able
to detect any object at the radio position quoted by Berger et al.,
GCN #958.
The Feb. 21 K-band image is posted at
http://argos.mporzio.astro.it/angelo/grb010220/
This message is citable."