GRB 020714
GCN Circular 1455
Subject
IPN triangulation of GRB020714
Date
2002-07-17T17:41:59Z (23 years ago)
From
Kevin Hurley at UCBerkeley/SSL <khurley@sunspot.ssl.berkeley.edu>
K. Hurley and T. Cline, on behalf of the Ulysses, Mars Odyssey,
and Konus-Wind GRB teams,
I. Mitrofanov, D. Anfimov, A. Kozyrev, M. Litvak and A. Sanin,
on behalf of the HEND/Odyssey GRB team,
W. Boynton, C. Fellows, K. Harshman, C. Shinohara and R. Starr,
on behalf of the GRS/Odyssey GRB team, and
E. Mazets and S. Golenetskii, on behalf of the Konus-Wind GRB team,
report:
Ulysses, Konus-Wind, and MO-HEND observed this burst at 56970 s.
As observed by Ulysses, it had a duration of approximately 20
seconds, a 25-100 keV fluence of approximately 8.3E-06 erg/cm2, and a
peak flux of approximately 6.9E-07 erg/cm2 s over 0.50 seconds.
We have triangulated it to two alternate preliminary 3 sigma error
boxes whose approximate areas are 200 sq. arcmin. each and whose
coordinates are:
RA(2000) DEC(2000)
ERROR BOX CENTER: 12 h 09 m 04.48 s 83 o 06 ' 44.26 "
ERROR BOX CORNER 1: 12 h 03 m 32.15 s 83 o 16 ' 13.61 "
ERROR BOX CORNER 2: 12 h 17 m 21.75 s 83 o 01 ' 37.33 "
ERROR BOX CORNER 3: 12 h 00 m 33.98 s 83 o 11 ' 12.68 "
ERROR BOX CORNER 4: 12 h 14 m 19.83 s 82 o 56 ' 58.10 "
ERROR BOX CENTER: 13 h 07 m 18.38 s 33 o 22 ' 54.25 "
ERROR BOX CORNER 5: 13 h 06 m 48.49 s 33 o 10 ' 44.30 "
ERROR BOX CORNER 6: 13 h 08 m 19.93 s 33 o 32 ' 11.73 "
ERROR BOX CORNER 7: 13 h 06 m 16.69 s 33 o 13 ' 39.21 "
ERROR BOX CORNER 8: 13 h 07 m 48.07 s 33 o 35 ' 05.69 "
These error boxes may be improved slightly, and we are seeking
auxiliary data which may allow us to distinguish between the two positions.
Maps will be posted shortly at sunspot.ssl.berkeley.edu/ipn3/020714.
GCN Circular 1457
Subject
IPN triangulation of GRB020714
Date
2002-07-18T14:52:58Z (23 years ago)
From
Kevin Hurley at UCBerkeley/SSL <khurley@sunspot.ssl.berkeley.edu>
K. Hurley and T. Cline, on behalf of the Ulysses, Mars Odyssey,
and Konus-Wind GRB teams, and
E. Mazets and S. Golenetskii, on behalf of the Konus-Wind GRB team,
report:
Konus-Wind data have been used to resolve the ambiguity in this
localization. The first position given in GCN 1455 is the correct
one:
RA(2000) DEC(2000)
ERROR BOX CENTER: 12 h 09 m 04.48 s 83 o 06 ' 44.26 "
ERROR BOX CORNER 1: 12 h 03 m 32.15 s 83 o 16 ' 13.61 "
ERROR BOX CORNER 2: 12 h 17 m 21.75 s 83 o 01 ' 37.33 "
ERROR BOX CORNER 3: 12 h 00 m 33.98 s 83 o 11 ' 12.68 "
ERROR BOX CORNER 4: 12 h 14 m 19.83 s 82 o 56 ' 58.10 "
GCN Circular 1466
Subject
GRB 020714, optical observations
Date
2002-08-10T18:45:03Z (23 years ago)
Edited On
2024-11-18T09:53:36Z (6 months ago)
From
Javier Gorosabel at LAEFF-INTA, Madrid <jgu@laeff.esa.es>
Edited By
Judith Racusin at NASA/GSFC <judith.racusin@nasa.gov> on behalf of Leo P. Singer at NASA/GSFC <leo.p.singer@nasa.gov>
J. Gorosabel (IAA-CSIC), J.M. Castro Cerón (ROA),
A.J. Castro Tirado (IAA-CSIC), A. Guijarro (CAHA),
F. Hoyo (CAHA), S. Pedraz (CAHA) and C. Wolf (Oxford Univ.),
report:
We have carried out Ic-band observations of the central
part of the GRB 020714 (GCN 1457) error box with the 2.2m
Telescope of Calar Alto (+BUSCA) as follows:
==============================================================
Date Seeing Exp.Time Lim.Mag. Time Since Coverage
(2002 UT) (") (s) (3 sigma) GRB (days) (%)
--------------------------------------------------------------
18.020-18.105/07 1.3 7x900 24.4 3.4 60
19.021-19.094/07 1.1 6x900 24.5 4.4 60
06.036-06.110/08 1.8 6x900 24.1 22.4 55
--------------------------------------------------------------
Marginal variability (< 0.25 mag) is detected for 5 objects.
None of these sources shows flux variability consistent with
a decay as expected for an optical afterglow 3.4-22.4 days
after the GRB.