GRB 020409
GCN Circular 1373
Subject
GRB 020409: Optical Observations
Date
2002-04-15T21:50:03Z (24 years ago)
From
Daniel E. Reichart at U.Chicago/Astro <reichart@oddjob.uchicago.edu>
M. Nysewander (U. North Carolina), F. Mullally, S. Salviander,
D. Winget (U. Texas), D. Reichart (Caltech), J. C. Clemens,
J. Rose (U. North Carolina), J. C. Wheeler, B. Schaefer, and
P. Kumar (U. Texas) report:
We observed the central 3.5 arcmin x 3.5 arcmin of the 6.4 arcmin diameter
error circle of GRB 020409 (GCN 1347) with the 2.1 m Otto Struve telescope
at McDonald Observatory for 2280 seconds on April 10 (beginning 29.3 hours
after the burst), and for 1860 seconds on April 11 (beginning 53.1 hours
after the burst). No filter was used.
Visual comparison of the images reveals no transients down to our
limiting magnitude, which we estimate to be V ~ 23 mag. This is consistent
with the deeper search of Price et al. (GCN 1368).
[GCN OPS NOTE (15apr02): Added carridge returns to eliminate the line wrapping.]
GCN Circular 1370
Subject
GRB 020409, 2-nd epoch optical observations at Terskol.
Date
2002-04-13T20:51:46Z (24 years ago)
From
Valery Petkov at Terskol Observatory <terskol@burbonz.nalnet.ru>
A.Sergeev (IC AMER, Terskol), S.Karpov (BNO), V.Petkov (BNO),
S.Barabanov (INASAN, Moscow), N.Karpov (IC AMER, Terskol) report:
We have obtained R-band images of the error box of GRB 020409
(Piro 2002, GCN 1347) using the IC AMER 2m telescope at peak Terskol and
MPAE two-channel focal reducer.
Twelve 600s images were taken on 2002 April 10 at 19:33 UT.
The second epoch three 600s images were taken on 2002 April 12 at 00:51 UT.
We find no evidence that any object in the BeppoSAX error box varies by
more than approximately 0.5 mag.
The limiting magnitude of this search is approximately R = 22.
This message may be cited.
GCN Circular 1368
Subject
GRB 020409: Optical observations
Date
2002-04-13T03:02:20Z (24 years ago)
From
Paul Price at RSAA, ANU at CIT <pap@srl.caltech.edu>
P.A. Price, M.P. Hunt and D.W. Fox (Caltech) report on behalf
of the REACT GRB collaboration:
We have observed the error-circle of GRB 020409 (GCN #1347) with the
Palomar 200-inch telescope + LFC at 2002 Apr 11.15 UT and Apr 12.14 UT
(30.5 and 54.5 hours after the GRB, respectively) in Steidel R. Our
images cover the entire error-circle down to a limiting magnitude of
R ~ 24 mag, with a small region with slightly less sensitivity.
We do not find any afterglow counterpart upon visual inspection of
the subtracted images.
This message may be cited.
GCN Circular 1367
Subject
GRB 020409, No Optical Detection to R = 22
Date
2002-04-12T23:59:52Z (24 years ago)
From
Valery Petkov at Terskol Observatory <terskol@burbonz.nalnet.ru>
A.Sergeev (IC AMER, Terskol), S.Karpov (BNO), V.Petkov (BNO),
S.Barabanov (INASAN, Moskow), N.Karpov (IC AMER, Terskol) report:
We have obtained R-band images of the error box of GRB 020409
(Piro 2002, GCN 1347) using the IC AMER 2m telescope at peak Terskol and
MPAE two-channel focal reducer.
Twelve 600s images were taken on 2002 April 10 at 19:33 UT. The second
epoch three 600s images were taken on 2002 April.
We find no evidence that any object in the BeppoSAX error box varies by
more than approximately 0.5 mag The limiting magnitude of this search is
approximately R = 22.
This message may be cited.
-----------------------------------------------------------------------------
Centre Astronomical and Medico-Ecological Researches of Academy of Sci.
Observatory at peak Terskol, Russia. Phone (866-2)-440315
-----------------------------------------------------------------------------
GCN Circular 1365
Subject
GRB 020409: No Evidence for an Optical Afterglow
Date
2002-04-12T21:36:27Z (24 years ago)
From
Stephen Holland at U. of Notre Dame <sholland@nd.edu>
S. T. Holland, P. M. Garnavich (Notre Dame), J. A. Munoz (IAC),
K. Z. Stanek (Harvard-Smithsonian CfA), K. Augustesen,
B. L. Jensen, J. Hjorth (Copenhagen), J. Gorosabel (IAA, Granada),
and M. Giavalisco (STScI) report:
We have obtained additional R-band images of the error box of
GRB 020409 (Piro 2002, GCN 1347) using the 4Shooter on the 1.2-meter
telescope at the Fred Lawrence Whipple Observatory (FLWO). The first
images were taken on 2002 April 11 at 03:50 UT and had a total
exposure time of 1020 seconds. The second set of images was taken on
April 12 at 03:55 and had a total exposure time of 1200 seconds.
These data were combined to form two deep images of the field which
were subtracted from each other using the methods described in
Schmidt et al. (1998, ApJ, 507, 46). We find no evidence for
variability greater than 0.1 mag in 24 hours in any object in the
BeppoSAX error box down to a limiting magnitude of approximately R =
21.5.
To obtain a longer time baseline (31.5 hours) we compared the
FLWO images to the combined exposures taken on April 11 at the
Brorfelde Observatory (Holland et al. 2002, GCN 1359). Again, we
found no evidence for an optical afterglow.
Images are available at
<http://www.nd.edu/~sholland/grb/grb020409/index.html>.
This message may be cited.
GCN Circular 1364
Subject
GRB 020409, 2nd epoch optical observations
Date
2002-04-12T20:01:24Z (24 years ago)
From
Sylvio Klose at TLS Tautenburg <klose@tls-tautenburg.de>
B. Stecklum, A. Zeh, S. Klose (Thueringer Landessternwarte Tautenburg),
D. H. Hartmann, M. Leising (Clemson University),
A. A. Henden, F. J. Vrba (USNO/USRA, Flagstaff),
J. Greiner (AIP Potsdam/MPE Garching)
report:
The error circle of GRB 020409 (Piro et al., GCN #1347) was imaged for the
second time in the I band on April 11/12 with the Tautenburg Schmidt
telescope equipped with the prime focus CCD camera (2k x 2k; fov about 35
x 35 arcmin), covering the full BeppoSAX error region.
Six images with 10 min exposure time each were obtained. The second epoch
observations are deeper than the first epoch observations. We detect
no source which varied by more than approximately 0.5 mag within the
GRB error circle. Any potential afterglow must have been fainter than
about I=(21 +/- 0.5) mag during the first epoch observations (Stecklum
et al., GCN #1353), which began on April 10, 21:44 UT.
This message can be quoted.
GCN Circular 1362
Subject
GRB 020409
Date
2002-04-12T03:01:26Z (24 years ago)
From
James Rhoads at STScI <rhoads@stsci.edu>
James Rhoads, Brad Whitmore, Abhijit Saha, Andy Dolphin,
Andy Fruchter, and Chryssa Kouveliotou report on behalf of a larger
collaboration:
We observed the error circle of GRB 020409 with the 3.5m WIYN
telescope + Mini Mosaic imager at Kitt Peak from 02:51 to 04:25 UT
on 2002 April 11, obtaining a total of 2000 seconds integration
in R band and 1000 seconds each in B and I.
Comparison with the POSS plates shows no new objects brighter than the
POSS plate limit.
Preliminary application of the color-color search method (Rhoads 2001,
ApJ 557, 943) in the (B-R) vs (R-I) plane shows no convincing afterglow
candidates down to the limit of the B and I images.
The 5 sigma detection limit in the R band image is estimated to be in
the range R = 23.5 to R=24, based on comparison with USNO-A2 photometry.
A second epoch of R band observations is underway.
GCN Circular 1361
Subject
GRB 020409 SARA Observations
Date
2002-04-11T23:14:30Z (24 years ago)
From
Dieter Hartmann at Clemson.U <hartmann@grb.phys.clemson.edu>
D. H. Hartmann, M. Leising (Clemson University)
S. Klose, A. Zeh (Thueringer Landessternwarte Tautenburg)
P. Mack (ACE)
K. Rumstay (VSU)
report on behalf of the SARA consortium:
We imaged the error-circle of GRB020409 (Piro et al. GCN1347)
with the SARA 0.9m telescope (KPNO 02/04/11) in the I band.
Comparison with the DSS did not reveal a new source at limiting
magnitude of I ~ 20, consistent with our earlier reports (GCN1353)
based on observations with the Tautenburg Schmidt Telescope.
GCN Circular 1359
Subject
GRB 020409, No Optical Detection to R = 20
Date
2002-04-11T15:17:23Z (24 years ago)
From
Stephen Holland at U. of Notre Dame <sholland@nd.edu>
S. T. Holland (Notre Dame), J. Gorosabel (IAA, Grenada),
K. Augustensen, B. L. Jensen, J. Hjorth (Copenhagen) report:
We have obtained R-band images of the error box of GRB 020409
(Piro 2002, GCN 1347) using the Danish 0.5m Brorfelde Schmidt
telescope. The first epoch images were taken on 2002 April 10 at
20:25 UT and had a total exposure time of 1200 seconds. The second
epoch images were taken on 2002 April 10 at 22:35 and had a total
exposure time of 2400 seconds. We subtracted the combined exposures
from each epoch using the methods described in Schmidt et al. (1998,
ApJ, 507, 46). We find no evidence that any object in the BeppoSAX
error box varies by more than approximately 0.1 mag in the two hours
between the centres of the two epochs. The limiting magnitude of
this search is approximately R = 20. We also combined all of the
images from both epochs to obtain an image with a limiting magnitude
of approximately R = 21. We compared this image with the Digital Sky
Survey (DSS) and found no new sources to the detection limit of the
DSS.
The combined images will be made available at
<http://www.nd.edu/~sholland/grb/grb020409/index.html>.
This message may be cited.
GCN Circular 1357
Subject
GRB 020409: Optical observations
Date
2002-04-11T09:21:06Z (24 years ago)
From
Eran Ofek at Tel Aviv U. <eran@wise1.tau.ac.il>
E. O. Ofek, A. Gal-Yam, S. Kaspi, J. Dann, P. Ibbetson (Wise observatory,
TAU) report:
We have observed the error box of GRB 020409 (Piro, GCN 1347)
using the Wise observatory 1m telescope equipped with the FOSC instrument.
We obtained 4 exposures of 360 s in R-band on 2002 Apr 10.717 UTC,
20.0 hours after the burst.
Comparison of the combined image with the POSS-II E plate
reveals no candidate optical transients, to a limiting magnitude of R=19,
within the 4' BeppoSAX error circle.
GCN Circular 1353
Subject
GRB 020409, optical observations
Date
2002-04-11T05:49:19Z (24 years ago)
From
Sylvio Klose at TLS Tautenburg <klose@tls-tautenburg.de>
B. Stecklum, S. Klose, A. Zeh (Thueringer Landessternwarte Tautenburg),
D. H. Hartmann, M. Leising (Clemson University),
A. A. Henden, F. J. Vrba (USNO/USRA, Flagstaff),
J. Greiner (AIP Potsdam/MPE Garching)
report:
The error circle of GRB 020409 (Piro et al., GCN #1347) was imaged in
the I band on April 10/11 with the Tautenburg Schmidt telescope
equipped with the prime focus CCD camera (2k x 2k; fov about 35 x 35
arcmin), covering the full BeppoSAX error region.
Altogether 6 images were taken, 10 min exposure time each. The combined
image goes considerably deeper than the DSS2 infrared survey. We detect no
obvious new point source brighter than I = (20 +/- 0.5) mag within the GRB
error circle.
Further observations are planned.
This message can be quoted.
GCN Circular 1352
Subject
GRB 020409: Optical Observations
Date
2002-04-11T05:33:15Z (24 years ago)
From
Jules Halpern at Columbia U. <jules@astro.columbia.edu>
J. P. Halpern, S. Gezari, N. Mirabal (Columbia U.) report for the
MDM Observatory GRB follow-up team:
"Using the MDM 1.3m, we started a series of R-band exposures covering
the error circle of BeppoSAX GRB 020409 (GCN #1347) on April 11 02:57 UT,
or 30 hours after the burst. While these images are deeper than the
POSS II limit, no new object brighter than those on the POSS II is seen.
Observations are continuing."
GCN Circular 1347
Subject
BeppoSAX GRB : GRB020409
Date
2002-04-10T11:53:36Z (24 years ago)
From
SAX Science Operations at IAS/CNR Frascati <saxsci@ias.rm.cnr.it>
On Apr. 9, 21:11:25 UT a faint GRB has been
detected in BeppoSAX GRBM and WFC1
Refined coordinates are:
R.A.(2000)= 131.3097
DEC.(2000)= +66.6878
The error radius is 3.2'
A follow-up with BeppoSAX NFI will not be carried out, because we have
already started a TOO on the ms pulsar XTEJ1908+094
Luigi Piro
BeppoSAX Mission Scientist