GRB 021201
GCN Circular 1760
Subject
GRB 021201: Optical Observations
Date
2002-12-16T21:27:18Z (23 years ago)
From
Melissa Nysewander at UNC,Chapel Hill <mnysewan@astro.unc.edu>
M. Nysewander, J. Moran, L. Johnson, D. Moschler, D. Reichart (University
of North Carolina), and A. Henden (USRA/USNO) report on behalf of a larger
collaboration:
We observed 100% of the ~9 square arcminute error box of the short-duration
burst GRB 021201 (GCN 1719) with the 0.6-meter Morehead Observatory
telescope beginning 2.1 days after the burst (GCN 1721) and with the
1.0-meter USNO telescope beginning 2.9 days after the burst. Both
observations were made without filter and the second observation goes
significantly deeper than the first.
Visual comparison of the first and second epoch images reveals no transient
sources to the limiting magnitude of the first epoch image, which we
measure to be Rc = 21.2 mag (3 sigma), 21.6 mag (2 sigma), and 22.4 mag (1
sigma) using the field calibration of Henden (GCN 1723).
Three Chandra sources lie in the field of view of the first epoch image and
20 Chandra sources lie in the field of view of the second epoch image.
Visual comparison of the first and second epoch images and the DSS-2 (Red)
reveals no obvious transient sources.
GCN Circular 1746
Subject
GRB 021201, optical observations
Date
2002-12-13T04:25:28Z (23 years ago)
Edited On
2024-11-18T09:46:00Z (9 months ago)
From
Peter Garnavich at U of Notre Dame <pgarnavi@miranda.phys.nd.edu>
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>
P. Garnavich and J. Quinn (University of Notre Dame)
We observed the entire error box of the GRB 021201 burst
(GCN 1719) with the NOAO WIYN telescope on 2002 Dec. 5.5 (UT).
The 3x600s R-band images were taken in 1.2" seeing. We confirm
the presence of a bright optical source near the Chandra x-ray
source #10 (GCN 1741) identified by Castro Cerón et al. (GCN 1743).
The optical source is USNO-A2.0 1050.05586294 listed
in the catalog at 08:07:49.350 +21:12:33.66 (J2000) and
R=18.9. We estimate the brightness at R=20.4 using a zero
point from a nearby Landolt standard star field. To search
for fainter objects, we subtracted a PSF scaled to the
peak of the USNO star and found no other sources brighter
than R=23.3 within 4" of the Chandra #10 x-ray position.
GCN Circular 1743
Subject
GRB 021201 (short/hard), NOT observations
Date
2002-12-12T23:49:08Z (23 years ago)
Edited On
2024-11-18T10:05:10Z (9 months ago)
From
Alberto Castro-Tirado at Inst.de Astro. de Andalucia <ajct@iaa.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. M. Castro Cerón (ROA, San Fernando),
J. Gorosabel and A. J. Castro-Tirado (IAA-CSIC, Granada)
C. M. Gutiérrez and M. López-Corredoira (IAC, La Laguna)
report:
"On Dec 4.16 UT we observed the field of the short
/hard GRB 021201 (GCN 1719) with the 2.5-m Nordic
Optical Telescope (+ALFOSC) at the Observatorio del
Roque de los Muchachos, in order to monitor the
entire IPN error box. In the co-added image (5 x
900-s in the r' Sloan filter with a 2".8 seeing),
no optical transient is found when comparing to the
DSS-2 (R-band). Particularly, a point-like optical
source with R about 20.5 is found at coordinates
RA(2000) = 08 07 49.35, Dec(2000) = +21 12 33.8
(+/- 0".5); this is within 2" of the Chandra
source # 10 reported to be inside the IPN error box
(GCN 1741). Such object is visible in the blue and
red DSS-2 charts as a very blue source that does
not seem to be related to the GRB 021201. Further
observations are planned."
This message can be quoted.
GCN Circular 1741
Subject
Chandra observation of the IPN error box of GRB021201 (short/hard)
Date
2002-12-12T21:34:59Z (23 years ago)
From
Kevin Hurley at UCBerkeley/SSL <khurley@sunspot.ssl.berkeley.edu>
K. Hurley, T. Cline, M. Feroci, P. Li, F. Frontera, E. Mazets, S.
Golenetskii, I. Mitrofanov, G. Ricker, and J.-L. Atteia, on behalf
of the Chandra target of opportunity for IPN short bursts collaboration,
report:
Chandra observed the error box of the short/hard GRB021201 (GCN 1719)
for approximately 21 ks starting at 23:10 on December 9. A very
preliminary analysis indicates that about 26 sources are present in
the Chandra field. They are listed in the table below. One of these
sources (#10) is inside the IPN error box. A map has been posted at
ssl.berkeley.edu/ipn3/021201. A second follow-up Chandra observation
will take place in several weeks to determine whether this or any other
source in the field displays fading behavior.
SOURCE # RA(2000) DEC(2000) NET_COUNTS
1 122.0995407104 21.3008174896 26.18750
2 122.0711364746 21.2559471130 39.250
3 122.0690231323 21.1490001678 182.750
4 122.0568161011 21.102066040 1553.06250
5 122.0377426147 21.1755084991 77.68750
6 122.0145645142 21.2685337067 29.8750
7 121.9966888428 21.1383686066 38.750
8 121.9874267578 21.3674888611 28.43750
9 121.9564666748 21.1419563293 139.93750
10 121.9553070068 21.2090072632 105.18750
11 121.9549407959 21.3561420441 50.43750
12 121.9532623291 21.2970886230 40.06250
13 121.9205551147 21.3233127594 29.93750
14* 121.9204101562 21.3241481781 34.8750
15 121.9017181396 21.1891117096 28.750
16* 121.9007949829 21.1885643005 29.50
17 121.8824768066 21.2981529236 54.0
18 121.8699111938 21.1710834503 176.06250
19 121.8655853271 21.2566776276 36.68750
20 121.8629837036 21.2110004425 43.1250
21 121.8587265015 21.1649875641 32.1250
22 121.8439636230 21.1804847717 92.18750
23 121.8304367065 21.3124256134 24.56250
24 121.8092498779 21.2480392456 47.93750
25 121.7484664917 21.2483577728 30.18750
26 121.7267990112 21.1938285828 32.06250
27 121.6778488159 21.4611721039 20.6250
28 121.6126785278 21.2064838409 32.93750
*These are probably duplicate detections of the preceding sources
GCN Circular 1723
Subject
GRB021201, BVRcIc field photometry
Date
2002-12-04T19:10:51Z (23 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 shallow BVRcIc all-sky photometry for
a 20x20 arcmin field centered at the IPN coordinates
for GRB021201 (Hurley et al., GCN 1719) with the USNOFS 1.0-m
telescope on one photometric night. Stars
brighter than V=13.0 are saturated and should be used with care.
We have placed the photometric data on our anonymous ftp site:
ftp://ftp.nofs.navy.mil/pub/outgoing/aah/grb/grb021201.dat
The astrometry in this file is based on linear plate solutions
with respect to UCAC2. The external errors are less than 100mas.
If an afterglow is discovered, we will extend this calibration
with additional nights to ensure against a systematic zeropoint error,
and to include U-band measures. You should check the dates on
the .dat file prior to final publication to get the latest photometry.
GCN Circular 1722
Subject
GRB 021201, Radio Observations
Date
2002-12-03T15:17:10Z (23 years ago)
From
Dale A. Frail at NRAO <dfrail@nrao.edu>
D. A. Frail (NRAO), and E. Berger (Caltech) report on behalf of a
larger collaboration:
"We used the VLA to image the error box of the short/hard burst
GRB021201 localized by the IPN (GCN #1719) at a frequency of 1.43 GHz.
There is a 2 mJy source in the error box at J2000, r.a.=08:07:47.537,
dec.=+21 14 54.53 which had been previously cataloged in September
1998 by the FIRST survey (http://sundog.stsci.edu/top.html). There are
no new sources to a 3-sigma level of 0.5 mJy.
Observations at higher frequencies are planned when it stops snowing."
GCN Circular 1721
Subject
GRB 021201: Optical Observations
Date
2002-12-03T11:55:40Z (23 years ago)
From
Melissa Nysewander at UNC,Chapel Hill <mnysewan@astro.unc.edu>
M. Nysewander, J. Moran, L. Johnson, D. Moschler, and D. Reichart
(University of North Carolina) report:
We observed 100% of the small error box of the short burst GRB 021201 (GCN
1719) beginning at 8:15 UTC on December 3rd (2.1 days after the burst) with
the Morehead Observatory 0.6m telescope. We integrated without filter for
~2700 seconds under relatively clear skies.
Visual comparison with the DSS-2 (R band) images reveal no new objects to
the limit of the DSS.
GCN Circular 1720
Subject
GRB 021201: BOOTES simultaneous optical observations
Date
2002-12-03T10:19:29Z (23 years ago)
From
Alberto Castro-Tirado at Inst.de Astro. de Andalucia <ajct@iaa.es>
A. J. Castro-Tirado (IAA-CSIC and LAEFF-INTA),
A. de Ugarte Postigo, T. J. Mateo Sanguino (CEDEA-INTA),
M. J�linek, P. Kub�nek, R. Hudec (ASU), S. Vitek,
P. P�ta (CVUT) and J. �. Bern� (Univ. de Alicante)
on behalf of the BOOTES team,
report:
"We have obtained several unfiltred exposures (45-s each)
under good metereological conditions covering the short/hard
GRB 021201 IPN error box (Hurley et al. GCN 1719). The
images covered the period 05:28:23 - 05:32:12 UT 1 Dec 2002
(i.e. between 1.68-minutes before the trigger and 2.12-minutes
after the trigger) with the very wide-field camera of BOOTES-1
(http://www.laeff.esa.es/BOOTES).
After a visual inspection of the IPN error box (Hurley et al.,
GCN 1719) in all frames, we do not find evidence of optical
emission, in particular simultaneously to the burst itself, for
which we have an image covering the time interval 05:29:55
- 05:30:40 UT. Therefore we derive an upper limit of R = 10
for any optical counterpart simultaneous to this short/hard
GRB.
To our knowledge, this is the second short/hard GRB for which
simultaneous images are available, following GRB 020531
(Castro-Tirado et al. 2002, GCN 1430). See also Castro-Tirado
et al. 2002(A&A 393, L55) regarding this issue."
This message can be cited.
GCN Circular 1719
Subject
IPN triangulation of GRB021201 (short/hard burst, small error box)
Date
2002-12-03T01:15:58Z (23 years ago)
From
Kevin Hurley at UCBerkeley/SSL <khurley@sunspot.ssl.berkeley.edu>
K. Hurley and T. Cline, on behalf of the Ulysses, HETE, Mars Odyssey,
and KONUS 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,
E. Mazets and S. Golenetskii, on behalf of the Konus-Wind GRB team,
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, and
D. M. Smith, R. P. Lin, J. McTiernan, R. Schwartz, C. Wigger, W. Hajdas,
and A. Zehnder, on behalf of the RHESSI GRB team, report:
Ulysses, Mars Odyssey-HEND, RHESSI, HETE-FREGATE, and Konus-Wind
observed this GRB at 19804 seconds. As observed by Ulysses, it had a
duration of approximately 0.3 seconds, a 25-100 keV fluence of
approximately 2E-07 erg/cm2, and a peak flux of approximately 8E-07
erg/cm2 s over 0.25 seconds.
We have triangulated it a preliminary, 3 sigma error boxes
with approximate area 9 square arcminutes whose coordinates are:
RA(2000) DEC(2000)
ERROR BOX CENTER: 8 h 7 m 46.09 s 21 o 14 ' 17.73 " (CENTER)
ERROR BOX CORNER 1: 8 h 7 m 45.73 s 21 o 12 ' 40.07 " (CORNER)
ERROR BOX CORNER 2: 8 h 7 m 56.62 s 21 o 11 ' 40.15 " (CORNER)
ERROR BOX CORNER 3: 8 h 7 m 35.56 s 21 o 16 ' 55.47 " (CORNER)
ERROR BOX CORNER 4: 8 h 7 m 46.46 s 21 o 15 ' 55.39 " (CORNER)
A Chandra NRA-accepted target of opportunity observation of this
error box is being requested.
This error box may be improved slightly.