GRB 040624
GCN Circular 2613
Subject
GRB 040624 - A long GRB detected with INTEGRAL
Date
2004-06-24T14:35:34Z (21 years ago)
From
Sandro Mereghetti at IASF/CNR <sandro@mi.iasf.cnr.it>
S. Mereghetti, D. Gotz (IASF, Milano), M. Beck, J.Borkowski (ISDC) on
behalf of the IBAS Localization Team
A 45 s long GRB has been detected with the INTEGRAL Burst Alert System
(IBAS) on June 24 at 08:21:35 UT. The GRB has been detected with
IBIS/ISGRI in the 15-200 keV band but with a significance below the
threshold for automatic delivery of the IBAS Alert Packets. Its
coordinates (J2000) are:
R.A. 13h 00m 09.9s
Dec. -03deg 35' 14''
with an uncertainty of 3 arcmin (90% c.l. radius)
The preliminary peak flux in the 20-200 keV range is about 0.5
photons/cmsq/s (5.4 x 10^-8 erg/cmsq/s) (1 s integration time).
This message can be cited.
GCN Circular 2614
Subject
GRB 040624, optical observations
Date
2004-06-24T22:29:56Z (21 years ago)
From
Sylvio Klose at TLS Tautenburg <klose@tls-tautenburg.de>
D. A. Kann, A. Zeh, and F. Ludwig (Thueringer Landessternwarte Tautenburg)
report:
We observed the field of GRB 040624 (Mereghetti et al., GCN 2613) with
the Tautenburg 1.34-m Schmidt telescope equipped with the Schmidt focus
CCD camera under good observing conditions but high airmass. Observations
were performed on 24.885 UT (0.54 days after the burst) in I and on 24.889
UT in R. A first visual inspection of the images does not reveal any new
source down to the DSS2 red limit.
This message may be cited.
GCN Circular 2615
Subject
GRB 040624: R-band observations
Date
2004-06-25T00:44:56Z (21 years ago)
Edited On
2024-11-18T10:04:52Z (6 months ago)
From
Javier Gorosabel at LAEFF-INTA, Madrid <jgu@laeff.esa.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. Gorosabel, V. Casanova, L. Verdes-Montenegro, M. Jelínek,
A. de Ugarte Postigo, A.J. Castro-Tirado (IAA-CSIC)
and J.M. Castro Cerón (STScI), report:
"We have acquired 20 images of the INTEGRAL GRB 040624 (GCN 2613)
error box with a total exposure time of 3000 s. The observations
were performed in the R band on June 24.8764-24.9139 UT with the
1.5 m Observatorio de Sierra Nevada (OSN) telescope. Visual
comparison did not reveal new optical sources brighter than the
limiting magnitude of the DSS-2 (R ~ 21)".
This message may be cited.
GCN Circular 2616
Subject
MASTER: GRB 040624 optical observation after 0,48d
Date
2004-06-25T09:50:34Z (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, Alexsandr Krylov Observatory, Moscow
We have observed the 6 sq. degrees field around INTEGRAL GRB 040624
with MASTER system (355 mm, http://observ.pereplet.ru).
We have 15 unfiltered images of the error box (30s and 60s expositions)
started at 24 June 2004 19:37:06 UT (after 0,48 day GRB 040624
time).
The limiting magnitude on the each image was about 15m under very bad
weather conditions.
There is no OT at error circle
as reported by INTEGRAL GCN2613.
This message may be cited.
GCN Circular 2617
Subject
GRB 040624: optical observations at TNG and VLT
Date
2004-07-01T14:55:25Z (21 years ago)
From
Daniele Malesani at SISSA-ISAS,Trieste,Italy <malesani@sissa.it>
D. Fugazza, P. D'Avanzo, G. Tagliaferri, S. Kalogerakos, S. Campana, G.
Chincarini, S. Covino, A. Cucchiara (INAF-OABr), D. Malesani
(SISSA-Trieste), N. Masetti (IASF-CNR), G.L. Israel, L. Stella
(INAF-OAR), M. Pedani, L. Di Fabrizio (INAF-TNG), M. Petr-Gotzens and
P.M. Vreeswijk (ESO), report on behalf of a larger collaboration:
We observed the field of GRB 040624 (Mereghetti et al., GCN 2613), using
the Italian TNG (with DOLORES) and the ESO VLT-UT1 (with FORS1 and
FORS2). The full error box was imaged in the R filter at several epochs,
starting 13 hours after the burst. The observation log is reported below.
Tel. Instr. UT start t-t0 (d) t_exp (s) seeing R_lim (10 sigma)
---------------------------------------------------------------------
TNG DOLORES 24.90 0.55 2x120 1.2" 22.4
VLT FORS2 24.99 0.64 5x30 0.3" 23.1
VLT FORS2 25.12 0.77 5x30 0.4" 23.1
VLT FORS1 27.98 3.63 5x30 0.7" 22.9
TNG* DOLORES 28.89 4.54 2x120 2.4" 21.5
---------------------------------------------------------------------
*: bad observing conditions.
No observation could be performed on Jun 25 and Jun 26 due to the
proximity of the bright Moon.
No new objects were seen at any epoch when comparing with the DSS
survey, also in agreement with previous reports (Kann et al., GCN 2614;
Gorosabel et al., GCN 2615; Lipunov et al., GCN 2616). We also performed
a systematic analysis looking for variable objects between the different
frames. Both aperture photometry (with DAOPHOT) and image subtraction
(with ISIS) were performed. No variable objects were found using both
approaches.
We appreciate the efforts made at the TNG and at the VLT (where part of
the observations were conducted during technical time).
This message can be cited.
GCN Circular 2618
Subject
Optical Observations of GRB040624
Date
2004-07-02T18:44:03Z (21 years ago)
From
S. Bradley Cenko at Caltech <cenko@srl.caltech.edu>
S. B. Cenko, D. B. Fox, and A. Gal-Yam (Caltech), with J. Dann, Y. Lipkin,
E. Medezinski, and E. Ofek (Wise Observatory, TAU), on behalf of
a larger collaboration, report:
"We have observed the error circle of the Integral GRB040624 (GCN 2613)
with the Wise 40-inch telescope on June 24.77 mean UT (10.0 hours after
the burst). Observations consisted of 4 x 210 second unfiltered images, and
these images were co-added to reach a limiting magnitude of ~ 20.0.
In addition, the field was observed by the newly automated Palomar 60"
telescope, from June 25.09 - June 25.29 UT (21.1 - 22.5 hours after the
burst). Observations consisted of 28 x 180 second R-band images, co-added
to reach a limiting magnitude of ~ 21.5. Both epochs were observed with ~
2.5" seeing, and the Palomar observations were contaminated with
background light from the nearby moon.
Neither epoch shows any new sources when compared with Sloan Digital
Sky Survey r-band images extracted from the SDSS DR2. In addition,
digital subtraction of the two epochs yields no
variable objects down to the limiting magnitude of the first epoch.
FITS images may be found at http://www.srl.caltech.edu/~cenko/grb040624."
GCN Circular 2619
Subject
GRB 040624: optical observations
Date
2004-07-03T06:57:13Z (21 years ago)
From
Vasilij Rumjantsev at CrAO <rum@crao.crimea.ua>
V.Rumyantsev (CrAO) and A.Pozanenko (IKI) report:
We have obtained 10 unfiltered images (180 s exposure each) of the GRB040624
error box (S. Mereghetti et al., GCN 2613). The images were taken with the
AT-64 telescope of Crimean Astrophysical observatory and cover the period
UT
19:13:00 - 20:21:00 of June 25, 2004.
Due to a quality of exposures a combined image comprises only 3 out of
total 10 images, and limiting magnitude of the combined image (S/N=3) is
estimated as following
Start time (UT) telescope exposure limiting mag.
Jun. 25 19:13 AT-64 3x180 s 18.7
No OT was found in comparison with DSS2.
Combined image can be found at http://grb.rssi.ru/GRB040624
This message can be cited.
GCN Circular 2623
Subject
GRB040624, optical observations
Date
2004-07-07T16:39:27Z (21 years ago)
Edited On
2025-04-09T18:43:50Z (2 months ago)
From
Adalberto Piccioni at Astronomy, Bologna U. <piccioni@ermione.bo.astro.it>
Edited By
Judith Racusin at NASA/GSFC <judith.racusin@nasa.gov> on behalf of Tyler Barna at University of Minnesota <tylerpbarna@gmail.com>
A. Piccioni, C. Bartolini, A. Guarnieri (Bologna University),
P. Ferrero (IASF-CNR, Bologna; Teramo Observatory and University),
G. Pizzichini (IASF-CNR, Bologna) and S. Bernabei (Bologna
Observatory) report:
On June 24, we have observed the field of GRB040624 (Mereghetti et al.,
GCN 2613) in Rc filter with the 152 cm telescope of Bologna University.
Observing in poor sky conditions we have obtained 8 images from
UT = 24.84502 to UT = 24.88096 with 300s exposition time.
By visual comparison of individual and coadded images with the USNO B
catalog we did not find any new objects.
We estimate that our coadded images (at mean UT = 24.86299) attained a
magnitude limit of Rc = 20.5.
GCN Circular 2632
Subject
GRB040624: optical monitoring at TNG
Date
2004-07-26T14:25:43Z (21 years ago)
From
Stefano Covino at Brera Astronomical Observatory <covino@merate.mi.astro.it>
P. D'Avanzo, D. Fugazza, A. Melandri, D. Malesani, G. Tagliaferri, L.A.
Antonelli, S. Campana, G. Chincarini, S. Covino, A. Cucchiara, M. Della
Valle., G.L. Israel, S. Kalogerakos, N. Masetti, E. Pian, L. Stella, L.
Di Fabrizio, M. Pedani, report on behalf of a larger collaboration:
We continued monitoring the field of the INTEGRAL GRB 040624 (Mereghetti
et al., GCN 2613), in order to look for a possible supernova (SN). Our
search was carried out to test the hypotesis that GRB 040624 exploded
inside the Abell cluster A1651 at z=0.0845, whose galaxies were detected
in our previous optical images (Fugazza et al., GCN 2617). Observations
were performed with the Italian Telescopio Nazionale Galileo (TNG),
equipped with the DOLORES camera, under good conditions. The observing
log is reported below:
UT start t-t0 (d) t_exp seeing filters R_lim (10 sigma)
---------------------------------------------------------------
Jul 6.92 12.6 3x180s 1.4" VRI 22.6
Jul 14.92 20.6 2x180s 1.3" VRI 22.0
---------------------------------------------------------------
t0 = 2004 Jun 24.35 UT (burst onset)
No significantly varying sources were found by comparing the images
taken at these two epochs, nor by comparing these with our earlier
measurements (GCN 2617). PSF-matched image subtraction carried out with
the ISIS package also yielded no convincing candidates.
If GRB 040624 occurred inside a galaxy belonging to the cluster, its
peak luminosity would be L ~ 9x10^47 erg/s, intermediate between those
of GRB980425 at z=0.0085 and GRB 031203 at z=0.1055. A SN similar to
SN1998bw would reach a peak magnitude R ~ 18.5 and would be easily
detectable in our images even if spatially coincident with a relatively
bright host galaxy. However, intrinsic obscuration may play a
significant role in depressing the SN flux. Moreover, an intrinsically
dimmer SN than SN1998bw cannot be excluded.
Therefore, the lack of a SN detection in our images does not allow us to
draw conclusions about the distance of the GRB.
This message can be cited.