GRB 050410
GCN Circular 3231
Subject
GRB050410: P60 Observations
Date
2005-04-11T06:01:38Z (21 years ago)
From
S. Bradley Cenko at Caltech <cenko@srl.caltech.edu>
S. Bradley Cenko and Derek B. Fox report on behalf of the Caltech-NRAO-
Carnegie GRB Collaboration:
We have imaged the field of GRB050410 with the automated Palomar 60-inch
telescope. Observations consisted of 10 x 120 second images each in the
Gunn i and z bands. At a mean epoch of approximately 3:50 UT (15.6
hours after the burst), we find no evidence for any source in the XRT
error circle (GCN 3218). Our limiting magnitudes, from comparison with
several stars in the USNO-B1 catalog, are approximately i < 21.5, z <
20.0.
GCN Circular 3230
Subject
GRB 050410: Early Optical/Ultraviolet Observations with Swift/UVOT
Date
2005-04-11T02:50:36Z (21 years ago)
From
Stephen Holland at USRA/NASA/GSFC/SSC <sholland@milkyway.gsfc.nasa.gov>
P. Boyd (GSFC-UMBC), S. T. Holland, M. Still (GSFC-USRA), V. Mangano
(INAF-IASF/Palermo), S. Hunsberger, (PSU), T. Poole (MSSL), N. Gehrels
(GSFC), K. Mason (MSSL), J. Nousek (PSU), and A. Wells (Leicester) on
behalf of the Swift UVOT team report:
The Swift Ultraviolet/Optical Telescope (UVOT) observed the field
of GRB 050410 (Fenimore et al., GCN 3219) starting at 12:46:04 UT on
10 April 2005. We find no evidence for a source in the 5 arcsecond
radius XRT error circle (La Parola et al., GCN 3218) in the UVOT data.
The 3-sigma limiting magnitudes in a 3.5 arcsecond radius circular
aperture , and the coadded exposure times, are: V = 19.9 (392 s), B =
21.2 (1199 s), U = 20.9 (1326 s), UVW1 = 20.8 (399 s), UVM2 = 21.1
(399 s), and UVW2 = 21.7 (788 s). The magnitudes reported in this
Circular are based upon preliminary flight calibrations.
GCN Circular 3229
Subject
GRB 050410, optical observations
Date
2005-04-11T00:51:02Z (21 years ago)
From
Alexei Pozanenko at IKI, Moscow <apozanen@iki.rssi.ru>
V.Rumyantsev (CrAO), V.Biryukov (SAI, MSU), and A.Pozanenko (IKI) on behalf
of larger GRB follow up collaboration report:
We have obtained 20 unfiltered images of the Swift trigger #114298 error box
(GRB050410, Fenimore et al., GCN 3219). The images were taken with the
AT-64 telescope of Crimean Astrophysical observatory and cover the period UT
17:25 - 18:20 of April 10, 2005. No new source was found within SWIFT the
XRT position (Parola, et al., GCN 3218) in comparison with DSS2 (R).
Limiting magnitude of the combined image (S/N=3) calibrated against R
USNO-A2.0 is following
Mid Time(UT) telescope exposure limiting mag.
April 10 17:57 AT-64 20x120 s 20.4
This message can be cited.
GCN Circular 3226
Subject
GRB 050410 R band Optical Observations
Date
2005-04-10T21:16:19Z (21 years ago)
From
Kuntal Mishra at ARIES,Nainital,India <kuntal@upso.ernet.in>
Kuntal Misra (ARIES, Naini Tal), A. de Ugarte Postigo, M. Jelinek
(IAA-CSIC Granada Spain), Atish P. Kamble (Raman Research Institute, Bangalore)
S. B. Pandey (ARIES, Naini Tal), A.J. Castro-Tirado (IAA-CSIC Granada Spain)
on behalf of larger GRB collaboration
We monitored the SWIFT (trigger = 114299) localization of GRB 050410
using the 1.04-m reflector at ARIES, Naini Tal. The observations
started around 15:56 UT (3h 42m after the burst). We do not detect
any new fading source down to DSS limit (R_c ~ 20.5 mag) in
6*300sec + 4*900sec exp time.
This message can be cited.
GCN Circular 3225
Subject
GRB050410 : Null detection report
Date
2005-04-10T21:00:15Z (21 years ago)
From
Eran Ofek at Tel Aviv U. <eran@wise1.tau.ac.il>
E. O. Ofek, Y. Lipkin (Wise observatory, TAU) report:
We have observed the error box of GRB 050410 (La Parola et al. 2005,
GCN 3218) using the Wise observatory 1m telescope + Tek CCD camera,
starting at 2005, Apr 10th, 17:05 UT.
Seven 300 sec R-band images were combined (mid exposure time 5.25 hours
after the burst).
No new source was detected within a radius which is twice the Swift XRT
error circle radius, down to a limiting magnitude of R=20.0
GCN Circular 3224
Subject
GRB 050410, optical observations
Date
2005-04-10T20:44:11Z (21 years ago)
From
Sylvio Klose at TLS Tautenburg <klose@tls-tautenburg.de>
B. Stecklum, S. Klose, U. Laux, Thuringer Landessternwarte Tautenburg,
J. Greiner, MPE Garching,
report:
Tautenburg started observing the error box of GRB 050410 on Apr 10,
20:10 UT. A first inspection of the first R-band images does not show a
source in the Swift/XRT error circle (La Parola et al. 2005,
GCN 3218) down to the DSS2 red limit.
GCN Circular 3223
Subject
GRB050410: Radio Observations
Date
2005-04-10T20:16:18Z (21 years ago)
From
Alicia Soderberg at Caltech <ams@astro.caltech.edu>
A. M. Soderberg (Caltech) reports on behalf of the
Caltech-NRAO-Carnegie GRB collaboration:
"Using the Very Large Array at 8.5 GHz, we observed the
field of GRB050410 (GCN 3219) on 2005 Apr 10.72 UT.
We do not detect a radio source coincident with the
Swift XRT position (GCN 3218). We place a 2-sigma upper
limit of 114 uJy on the XRT error region.
Further observations are planned."
GCN Circular 3221
Subject
GRB050410: MASTER optical observations
Date
2005-04-10T19:15:01Z (21 years ago)
From
Vladimir Lipunov at Moscow State U/Krylov Obs <gcncirc@observ.inetcomm.ru>
V. Lipunov, A.Krylov, V.Kornilov, G.Borisov, D.Kuvshinov,
A.Belinski, M.Kuznetsov, S.Potanin, G.Antipov,
E.Gorbovskoy, N.Tyurina
Sternberg Astronomical Institute, Moscow
After Swift alert 114299 MASTER robotic telescope
(http://observ.pereplet.ru)
had imaging the corresponding area of the sky under the bad weather
conditions at 17:14:08.03 UT (5h after GRB Time, OUR SUNSET ).
There are no new object up to 14.7 on unfiltered image of the error box
(30s exposition, 6 square degrees field).
The limit on summ (between 18h17m - 18h30m UT) is about 18.5 .
We have about 50 images.
The JPG-images of summ are available at
http://observ.pereplet.ru/images/GRB050410/summ1.jpg
This message may be cited.
This work is supported by Moscow Union "Optic" and partly supported by
RFFI 04-02-16411.
Mailto: lipunov@sai.msu.ru
GCN Circular 3220
Subject
GRB 050410: Early observations with Swift-UVOT
Date
2005-04-10T17:03:38Z (21 years ago)
From
Padi Boyd at GSFC <padi@milkyway.gsfc.nasa.gov>
P. Boyd (GSFC), V. Mangano (INAF-IASF/Palermo), S. T. Holland (GSFC), S.
Hunsberger (PSU), T. Poole (MSSL), M. Still (GSFC), N. Gehrels (GSFC), K.
Mason (MSSL), J. Nousek (PSU) report, on behalf of the Swift UVOT team:
The Swift Ultra-Violet/Optical Telescope (UVOT) began settled
observations of the field of GRB 050410 (Parola et al; GCN 3218) at
12:46:17 UT on 10 April 2005. This is immediately after the target exited
the Swift Earth-limb constraint, 1912 seconds after the BAT trigger.
The first UVOT data arrived via TDRSS; it is a 100s V image starting
immediately after spacecraft settling, binned 8x8 (pixel size 4.x4.
arcsec) centered on the BAT position, and 5.33 arcminutes per side.
Mid-exposure time was 1962 s after the trigger. A comparison against the
Digitized Sky Survey reveals no new sources within the BAT and XRT error
circles down to a 5-sigma background limit of V = 18.5 with a systematic
uncertainty of 0.1 mag (due to uncertainties in the photometric zero
point). This limit is based upon preliminary flight calibrations.
GCN Circular 3219
Subject
Swift-BAT detection of GRB 050410
Date
2005-04-10T16:00:04Z (21 years ago)
From
Scott Barthelmy at NASA/GSFC <Scott@lheamail.gsfc.nasa.gov>
E. Fenimore (LANL), L. Barbier, S. Barthelmy (GSFC), J. Cummings (GSFC/NRC),
M. Galassi (LANL), N. Gehrels (GSFC), D. Hullinger (UMD), H. Krimm (GSFC/USRA),
C. Markwardt (GSFC/UMD), D. Palmer (LANL), A. Parsons (GSFC),
T. Sakamoto (GSFC/NRC), G. Sato (ISAS), M. Suzuki (Saitama),
M. Tripicco (GSFC-SSAI), J. Tueller (GSFC)
on behalf of the Swift-BAT team:
At 12:14:25.36 UT Swift-BAT triggered on burst GRB 050410 (trigger=114298).
The BAT ground position is RA,Dec=89.745,+79.601 (J2000). We note this
is 38 arcsec from the XRT position (Parola, et al, Circ 3218). For this GRB
there were two BAT triggers (114298 and 114299; 9 sec apart). This is a result
of a rare timing condition in the on-board software where the triggering code
times-out while waiting for the imaging results of the first trigger,
then BAT goes back into the triggerable state, and then triggers again
(on the same burst) which then produces the second trigger number and
the second series of BAT-related GCN Notices.
The lightcurve shows a broad peak with a total burst duration of ~65 sec
(T90=43sec in 15-350 keV). The rise of the burst was slow, causing a
delayed trigger, which continued to the back-to-back triggering situation.
The burst starts about 10 sec before the 114298 trigger time.
A simple power law fit yields a photon index of -1.6 +/- 0.1, a burst fluence
of 6.9e-6 erg/cm2 , and the 1-sec peak flux of 2.0 ph/cm2/sec (15-350 keV).
There is emission across the full BAT range including the 100-350 keV band.
The burst was 43 deg off the BAT bore sight with a partial coding of 20%.
GCN Circular 3218
Subject
GRB 050410: Swift XRT Position
Date
2005-04-10T14:44:05Z (21 years ago)
From
David Burrows at PSU/Swift <dxb15@psu.edu>
V. La Parola, V. Mangano, T. Mineo, G. Cusumano (INAF-IASF/Palermo), J. A.
Kennea, D. N. Burrows (PSU), C. Pagani, P. Romano (INAF-OAB), J. P.
Osborne, P. T. O'Brien (U. Leicester), M. Capalbi, F. Tamburelli (ASDC),
B. Zhang (U. Nevada), R. Fink, S. Barthelmy and N. Gehrels (GSFC), report
on behalf of the Swift XRT team:
The Swift BAT instrument found Triggers 114298/114299 (possibly GRB 050410)
at 12:14:25 UT on 10 April 2005. The target was within the Swift Earth
constraint and the observatory executed a delayed automated slew to the BAT
position at 12:44:20. The XRT began taking data at 12:46:27 UT, about 32
minutes after the burst. The afterglow was too faint for the XRT to
produce an on-board centroid. Ground processing shows a faint uncataloged
X-ray source located at:
RA(J2000) = 05:59:12.9
Dec(J2000) = +79:36:9.2
We estimate an uncertainty of about 5 arcseconds radius (90%
containment). This source is located 38 arcseconds from the BAT position
for Trigger 114299.