GRB 030204
GCN Circular 1854
Subject
IPN triangulation of GRB030204 (small error box)
Date
2003-02-04T19:34:03Z (22 years ago)
From
Kevin Hurley at UCBerkeley/SSL <khurley@sunspot.ssl.berkeley.edu>
K. Hurley and T. Cline, on behalf of the Ulysses, HETE, and Mars Odyssey
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,
A. von Kienlin, G. Lichti, and A. Rau, on behalf of the
INTEGRAL SPI-ACS GRB team, and
G. Ricker, J-L Atteia, N. Kawai, D. Lamb, S. Woosley, J. Doty, R.
Vanderspek, J. Villasenor, G. Crew, G. Monnelly, N. Butler, J.G.
Jernigan, A. Levine, F. Martel, E. Morgan, G. Prigozhin, J. Braga, R.
Manchanda, G. Pizzichini, Y. Shirasaki, C. Graziani, M. Matsuoka, T.
Tamagawa, K. Torii, T. Sakamoto, A. Yoshida, E. Fenimore, M. Galassi,
T. Tavenner, T. Donaghy, M. Boer, J-F Olive, and J-P Dezalay, on
behalf of the HETE GRB team, report:
Ulysses, Mars Odyssey (HEND & GRS), INTEGRAL (SPI-ACS) and HETE
(FREGATE) observed this burst at 45930 s. As observed by Ulysses, it
had a duration of approximately 100 seconds, a 25-100 keV fluence of
approximately 2.2E-05 erg/cm2, and a peak flux of approximately
1.1E-06 erg/cm2 s over 0.25 seconds.
We have triangulated it to a preliminary, 3 sigma error box whose
approximate area is 73 sq. arcmin. and whose coordinates are:
RA(2000) DEC(2000)
ERROR BOX CENTER: 0 h 3 m 20.47 s 32 o 43 ' 36.92 "
ERROR BOX CORNER 1: 0 h 3 m 30.06 s 32 o 45 ' 45.55 "
ERROR BOX CORNER 2: 0 h 4 m 26.15 s 32 o 40 ' 18.06 "
ERROR BOX CORNER 3: 0 h 2 m 14.87 s 32 o 46 ' 52.49 "
ERROR BOX CORNER 4: 0 h 3 m 10.89 s 32 o 41 ' 28.22 "
This error box may be improved.
GCN Circular 1855
Subject
GRB 030204, optical observations
Date
2003-02-05T00:44:29Z (22 years ago)
From
Alberto Castro-Tirado at LAEFF-INTA <ajct@laeff.esa.es>
V. Casanova, E. Rodriguez, A.J. Castro-Tirado (IAA-CSIC),
J. Gorosabel (IAA-CSIC/STScI),
J. M. Castro Ceron (STScI)
report:
"We have imaged a 7' x 7' region centred on the
error box for GRB 020304 (Hurley et al., GCN 1854)
with the 1.5-m telescope at Observatorio de Sierra
Nevada in Granada, Spain. One unfiltred frame and
one R-band frame (300-s exposure time each) were
obtained on Feb 4.879 UT (i.e. 8.3 hours after
the GRB) under poor meteorological conditions.
When comparing to the DSS-2 (R-band), no optical
counterpart is found down to a limiting magnitude
of R = 19.7 in the central region (coverage ~35%)
of the error box."
GCN Circular 1858
Subject
GRB 030204: Correction to GCN 1856
Date
2003-02-05T14:39:45Z (22 years ago)
From
Daniel E. Reichart at U.North Carolina <reichart@physics.unc.edu>
In GCN 1856, we observed GRB 030204, not GRB 030115.
I apologize if this caused any confusion.
Dan Reichart
U. North Carolina
GCN Circular 1860
Subject
GRB030204 field photometry
Date
2003-02-07T14:59:43Z (22 years ago)
From
Arne A. Henden at USNO/USRA <aah@nofs.navy.mil>
A. Henden (USRA/USNO) reports on behalf of the USNO GRB team:
We have acquired BVRcIc all-sky photometry for
a 20x20 arcmin field covering the eastern two thirds of
the IPN error box for GRB030204 (Hurley, et. al GCN 1584)
with the USNOFS 1.0-m telescope on one photometric night. Stars
brighter than V=12.5 are saturated and should be used with care.
Conditions were clear but with poor seeing; estimated external
zeropoint error is about 0.03mag. We have placed the photometric
data on our anonymous ftp site:
ftp://ftp.nofs.navy.mil/pub/outgoing/aah/grb/grb030204.dat
The astrometry in this file is based on linear plate solutions
with respect to UCAC2. The external errors are less than 100mas.
We do not anticipate additional nights of photometry on
this field since no afterglow has been detected. However,
as with all NOFS calibrations, check the dates on the
file prior to final publication to ensure that you have
the latest photometry.
GCN Circular 1861
Subject
GRB 030204: Optical Observations
Date
2003-02-07T18:25:09Z (22 years ago)
From
Melissa Nysewander at UNC,Chapel Hill <mnysewan@astro.unc.edu>
M. Nysewander (U. North Carolina), A. Henden (USRA/USNO), M.
Lopez-Morales, D. Reichart (U. North Carolina), and M. Schwartz (Tenagra
Observatories) report on behalf of a larger collaboration:
We observed the entire ~73 square arcminute error box of GRB 030204 (GCN
1854) beginning 11.5 hours after the burst (GCNs 1856, 1858) in BVRcIc and
beginning 38.2 hours after the burst in Rc. Using the field calibration of
Henden (GCN 1860), we report the following 3-sigma limiting magnitudes:
Date Mean Time Filter Integration Limiting Telescope*
Since GRB Time (sec) Magnitude
(hours) x Pointings
Feb 5.011 11.5 Rc 1500 x 3 20.0 0.6-meter MO
Feb 5.042 12.2 Ic 3600 x 1 19.3 0.2-meter PST
Feb 5.108 13.8 Rc 900 x 2 21.5 1.0-meter USNO
Feb 5.133 14.4 B 480 x 2 22.0 1.0-meter USNO
Feb 5.133 14.4 V 300 x 2 21.7 1.0-meter USNO
Feb 6.122 38.2 Rc 1800 x 2 22.9 1.0-meter USNO
Feb 6.124 38.2 Rc 2700 x 2 21.7 0.8-meter TII
*MO = Morehead Observatory telescope; PST = Pisgah Survey Telescope at the
Pisgah Astronomical Research Institute (PARI); TII = Tenagra II telescope.
Using the image subtraction routine ISIS2 (Alard 2000), we find no
transient sources in either of our Rc images of February 4th when compared
to either of our Rc images of February 5th.
Alard, C. 2000, A&AS 114, 363