GCN Circular 957
Subject
GRB 010220, simultaneous optical observations
Event
Date
2001-02-21T22:56:04Z (25 years ago)
Edited On
2024-11-06T18:59:14Z (a year ago)
From
Alberto Castro-Tirado at LAEFF-INTA <ajct@laeff.esa.es>
Edited By
Leo P. Singer at NASA/GSFC <leo.p.singer@nasa.gov> on behalf of Leo P. Singer at NASA/GSFC <leo.p.singer@nasa.gov>
GRB 010220, simultaneous optical observations by BOOTES-1
---------------------------------------------------------
Alberto Castro-Tirado, IAA-CSIC (Granada) and LAEFF-INTA (Madrid)
José María Castro Cerón, ROA (San Fernando)
Tomás Mateo, CEDEA-INTA (Arenosillo)
René Hudec and Jan Soldán, ASU (Ondrejov)
Petr Páta and Martin Bernas, CVUT-FEL (Prague)
José Ángel Berná, Univ. de Alicante (Alicante)
Javier Gorosabel, DSRI (Copenhagen)
Benito de la Morena, CEDEA-INTA (Arenosillo)
José Torres, DEC-INTA (Madrid)
on behalf of the BOOTES-1 Team
report:
"We have obtained about 30 images of a field containing the BSAX/WFC
error box for the 150 s long GRB 010220 (Piro et al. GCN 953, Manzo et al.
GCN 956) with the ultra wide-field CCD of BOOTES-1 during the time interval
Feb 20.93-Feb 20.97 UT (+/- 0.5 h around the GRB occurrence). The exposures,
with integration time of 60 s, cover a field of 40 x 28 deg� and reach a
limiting magnitude of about R = 10. None of the frames, including the one
ending at 22:51:15 UT, i.e. covering the first 8 s of the event, reveals an
optical transient within the BSAX/WFC error circle. The next frame started
at 22:52:15 UT and covers the time interval t_0 + 68 s to t_0 + 128 s.
We notice that the galactic nebula IC 1805 lies along the line of sight of
the GRB, at a galactic latitude of b = +1.38 deg, i.e. the extinction
is high (A_v = 3.3 mag). Images and additional information can be found
at http://www.LAEFF.ESA.Es/~ajct/GRBs/GRB010220/ .
This message can be cited."
[GCN OPS NOTE(12Mar01): Two typos have been corrected.
The phrase "GCN 957) with the" has been changed to "GCN 956) with the".
And "Feb 21.93-Feb 21.97 UT" has been changed to "Feb 20.93-Feb 20.97 UT".]