GRB 080229A
GCN Circular 8465
Subject
Radio observation of GRB 080229a with ATCA
Date
2008-11-03T01:29:59Z (18 years ago)
From
Aquib Moin at CIRA/ATNF <aquib.moin@postgrad.curtin.edu.au>
Aquib Moin (Curtin Institute of Radio Astronomy / Australia Telescope
National Facility), Steven Tingay (Curtin Institute of Radio Astronomy),
Chris Phillips (Australia Telescope National Facility), Gregory Taylor
(University of New Mexico), Mark Wieringa (Australia Telescope National
Facility) and Ralph Martin (Perth Observatory) report:
We observed the BAT refined position of the GRB 080229a (GCN 7338) at
4.8 and 8.456 GHz with the Australia Telescope Compact Array (ATCA) on
May 31, 2008 between 08:18:55 UT and 13:38:25 UT.
We did not detect a radio source at the BAT position of the GRB 080229a
(GCN 7338). The radio flux density at the GRB position is -0.053 +/-
0.175 mJy at 4.8 GHz, and -0.383 +/- 0.356 mJy at 8.6 GHz (1-sigma).
The Australia Telescope Compact Array (/ Parkes telescope / Mopra
telescope / Long Baseline Array) is part of the Australia Telescope
which is funded by the Commonwealth of Australia for operation as a
National Facility managed by CSIRO.
See field image at:
http://cira.ivec.org/dokuwiki/doku.php/grb/grb_080229a_field_image
Please note: http://astronomy.ivec.org is now http://cira.ivec.org
GCN Circular 7407
Subject
GRB 080229A: GAO 150cm telescope Optical Observation
Date
2008-03-11T11:18:46Z (18 years ago)
From
Kenzo Kinugasa at Gunma Astro. Obs/Japan <kinugasa@astron.pref.gunma.jp>
K. Kinugasa (Gunma Astronomical Observatory) report:
The field of GRB 080229A (Cannizzo et al. GCN 7335) was observed
with the 150 cm telescope of the Gunma Astronomical Observatory.
Starting at 18:19 UT (1.25 hours after the burst), Rc, and Ic frames
were acquired for 5 x 3-min exposures under a poor seeing (~3.5arcsec)
condition.
The enhaunced XRT position (Beardmore et al. GCN 7343) is close to
a bright star, so the field are strongly contaminated with the light
from this star. We do not identify the optical counterpart reported
by Yoshida et al. (GCN 7341) to 3-sigma limiting magnitudes of Rc=19.3
and Ic=18.7 relative to USNO-B1.0 magnitudes.
GCN Circular 7336
Subject
GRB 080229A: ROTSE-III Optical Limits
Date
2008-02-29T17:42:42Z (18 years ago)
From
Brad Schaefer at LSU <schaefer@grb.phys.lsu.edu>
B. E. Schaefer (Louisiana State) and E.S. Rykoff (UCSB), report on behalf
of the ROTSE collaboration:
ROTSE-IIIa, located at Siding Spring Observatory, Australia, responded to
GRB 080229A (Swift trigger 304379; Cannizzo et al. 2008, GCN 7335),
producing images beginning 9.8 s after the GCN notice time. An automated
response took the first image at 17:05:31.8 UT, 32.3 s after the burst,
and during the gamma-ray emission, under excellent conditions. We took 10
5-sec, 10 20-sec and 20 60-sec exposures, with continuing exposures now
ongoing. These unfiltered images are calibrated relative to USNO A2.0 (R).
Comparison to the DSS (second epoch) reveals no new sources within the
3-sigma Swift/BAT error circle; the field is not crowded. Unfortunately,
the XRT position is close to a star of moderate brightness, so the optical
transient could possibly be hidden by the light from this star. We do not
see any indication that the image of the star is not that of the PSF, and
preliminary image subtractions do not reveal any extra sources.
Individual images have limiting magnitudes ranging from 14.7-16.1; we set
the following specific limits.
start UT end UT t_exp(s) mlim t_start-tGRB(s) Coadd?
--------------------------------------------------------------------
17:05:31.8 17:05:36.8 5 14.7 32.3 N