- GCN/BACODINE POSITION NOTICE
TITLE: GCN/INTEGRAL NOTICE
NOTICE_DATE: Tue 13 Jul 10 14:36:17 UT
NOTICE_TYPE: INTEGRAL Wakeup
TRIGGER_NUM: 6041, Sub_Num: 0
GRB_RA: 255.1793d {+17h 00m 43s} (J2000),
255.2836d {+17h 01m 08s} (current),
254.6841d {+16h 58m 44s} (1950)
GRB_DEC: +28.3652d {+28d 21' 55"} (J2000),
+28.3503d {+28d 21' 01"} (current),
+28.4376d {+28d 26' 15"} (1950)
GRB_ERROR: 3.23 [arcmin, radius, statistical only]
GRB_INTEN: 8.37 [sigma]
GRB_TIME: 52566.47 SOD {14:36:06.47} UT
GRB_DATE: 15390 TJD; 194 DOY; 10/07/13
SC_RA: 260.09 [deg] (J2000)
SC_DEC: 36.81 [deg] (J2000)
SUN_POSTN: 112.81d {+07h 31m 13s} +21.78d {+21d 46' 58"}
SUN_DIST: 118.16 [deg] Sun_angle= -9.5 [hr] (East of Sun)
MOON_POSTN: 137.53d {+09h 10m 06s} +13.34d {+13d 20' 21"}
MOON_DIST: 106.81 [deg]
GAL_COORDS: 49.81, 35.48 [deg] galactic lon,lat of the burst
ECL_COORDS: 249.17, 50.74 [deg] ecliptic lon,lat of the burst
COMMENTS: INTEGRAL GRB Coordinates.
COMMENTS: Possibly real GRB event
- red DSS finding chart
ps-file
- GCN NOTICE
TITLE: GCN/INTEGRAL NOTICE
NOTICE_DATE: Tue 13 Jul 10 14:39:17 UT
NOTICE_TYPE: INTEGRAL Refined
TRIGGER_NUM: 6041, Sub_Num: 1
GRB_RA: 255.1608d {+17h 00m 39s} (J2000),
255.2651d {+17h 01m 04s} (current),
254.6656d {+16h 58m 40s} (1950)
GRB_DEC: +28.3685d {+28d 22' 06"} (J2000),
+28.3535d {+28d 21' 13"} (current),
+28.4409d {+28d 26' 27"} (1950)
GRB_ERROR: 3.18 [arcmin, radius, statistical only]
GRB_INTEN: 8.76 [sigma]
GRB_TIME: 52592.47 SOD {14:36:32.47} UT
GRB_DATE: 15390 TJD; 194 DOY; 10/07/13
SC_RA: 260.09 [deg] (J2000)
SC_DEC: 36.81 [deg] (J2000)
SUN_POSTN: 112.81d {+07h 31m 14s} +21.78d {+21d 46' 57"}
SUN_DIST: 118.15 [deg] Sun_angle= -9.5 [hr] (East of Sun)
MOON_POSTN: 137.56d {+09h 10m 14s} +13.33d {+13d 19' 40"}
MOON_DIST: 106.78 [deg]
GAL_COORDS: 49.81, 35.50 [deg] galactic lon,lat of the burst
ECL_COORDS: 249.14, 50.74 [deg] ecliptic lon,lat of the burst
COMMENTS: INTEGRAL GRB Coordinates.
COMMENTS: Possibly real GRB event
- GCN NOTICE
TITLE: GCN/INTEGRAL NOTICE
NOTICE_DATE: Tue 13 Jul 10 15:34:33 UT
NOTICE_TYPE: INTEGRAL Offline
TRIGGER_NUM: 6041, Sub_Num: 2
GRB_RA: 255.2093d {+17h 00m 50s} (J2000),
255.3136d {+17h 01m 15s} (current),
254.7143d {+16h 58m 51s} (1950)
GRB_DEC: +28.3899d {+28d 23' 24"} (J2000),
+28.3750d {+28d 22' 30"} (current),
+28.4622d {+28d 27' 44"} (1950)
GRB_ERROR: 2.50 [arcmin, radius, statistical only]
GRB_INTEN: 8.76 [sigma]
GRB_TIME: 52592.47 SOD {14:36:32.47} UT
GRB_DATE: 15390 TJD; 194 DOY; 10/07/13
SC_RA: 260.09 [deg] (J2000)
SC_DEC: 36.81 [deg] (J2000)
SUN_POSTN: 112.85d {+07h 31m 23s} +21.78d {+21d 46' 36"}
SUN_DIST: 118.14 [deg] Sun_angle= -9.5 [hr] (East of Sun)
MOON_POSTN: 138.10d {+09h 12m 25s} +13.12d {+13d 07' 04"}
MOON_DIST: 106.50 [deg]
GAL_COORDS: 49.85, 35.46 [deg] galactic lon,lat of the burst
ECL_COORDS: 249.20, 50.77 [deg] ecliptic lon,lat of the burst
COMMENTS: INTEGRAL GRB Coordinates.
COMMENTS: refined_coordinates_after_offline_analysis
- GCN Circular #10951
S.Mereghetti, A.Paizis (IASF- Milano), D.Gotz (CEA-Saclay), E. Bozzo, A.
Taylor, M. Beck (ISDC, Versoix), and J. Borkowski (CAMK, Torun) on behalf
of the IBAS Localization Team report:
a gamma ray burst lasting about 20 s has been detected by IBAS in the
IBIS/ISGRI data at 14:36:06 U.T. on July 13th.
Its refined coordinates (J2000) are:
RA: 255.209 [degrees]
DEC: 28.390 [degrees]
with an uncertainty of 2.5 arcmin (90% c.l.).
A preliminary analysis gives a peak flux in the 20-200 keV range of about
0.4 ph/cmsq/s (1 s integration time) and a fluence over the same energy
range of about 2 10e-7 erg/cmsq.
A plot of the light curve will be posted at
http://ibas.iasf-milano.inaf.it/IBAS_Results.html
This message can be cited.
- GCN NOTICE
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Tue 13 Jul 10 16:39:48 UT
NOTICE_TYPE: Swift-XRT Position
TRIGGER_NUM: 20143, Seg_Num: 1
GRB_RA: 255.2019d {+17h 00m 48.45s} (J2000),
255.3062d {+17h 01m 13.48s} (current),
254.7069d {+16h 58m 49.66s} (1950)
GRB_DEC: +28.3948d {+28d 23' 41.2"} (J2000),
+28.3799d {+28d 22' 47.5"} (current),
+28.4671d {+28d 28' 01.4"} (1950)
GRB_ERROR: 4.9 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN: 1.00e-10 [erg/cm2/sec]
GRB_SIGNIF: 10.00 [sigma]
IMG_START_DATE: 15390 TJD; 194 DOY; 10/07/13
IMG_START_TIME: 58845.00 SOD {16:20:45.00} UT, 6253.0 [sec] since BAT Trigger Time
TAM[0-3]: 100.00 100.00 100.00 100.00
AMPLIFIER: 1
WAVEFORM: 31
SUN_POSTN: 112.89d {+07h 31m 34s} +21.77d {+21d 46' 12"}
SUN_DIST: 118.11 [deg] Sun_angle= -9.5 [hr] (East of Sun)
MOON_POSTN: 138.75d {+09h 15m 00s} +12.87d {+12d 52' 07"}
MOON_DIST: 106.12 [deg]
MOON_ILLUM: 5 [%]
GAL_COORDS: 49.85, 35.47 [deg] galactic lon,lat of the burst
ECL_COORDS: 249.19, 50.77 [deg] ecliptic lon,lat of the burst
COMMENTS: SWIFT-XRT Coordinates.
COMMENTS: This Notice is generated as a result of an uploaded TOO -- this is not a normal BAT-detected burst.
COMMENTS: And the IMG_START_DATE/TIME fields are the current epoch -- not the original detection.
COMMENTS: This Notice was ground-generated -- not flight-generated.
COMMENTS: TAM values, flux and significance fields are not valid.
COMMENTS: This position was automatically generated on the ground using
COMMENTS: Photon Counting data telemetered via TDRSS (SPER data).
COMMENTS: See http://www.swift.ac.uk/sper/docs.php for details.
COMMENTS: The probability that this is a serendipitous source in the
COMMENTS: SPER window is 2.8% < P(seren) < 6.6%.
- GCN Notice
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Tue 13 Jul 10 16:47:20 UT
NOTICE_TYPE: Swift-UVOT Nack-Position
TRIGGER_NUM: 20143, Seg_Num: 0
REGION_RA: 255.2018d {+17h 00m 48.43s} (J2000),
255.3061d {+17h 01m 13.45s} (current),
254.7068d {+16h 58m 49.64s} (1950)
REGION_DEC: +28.3948d {+28d 23' 41.2"} (J2000),
+28.3799d {+28d 22' 47.5"} (current),
+28.4671d {+28d 28' 01.4"} (1950)
REGION_ERROR: 9.7 [arcsec search radius]
REGION_SOURCE: XRT location
MAG_LIMIT: 20.10 [mag] 3.00 [sigma]
FILTER: 10, White
IMG_START_DATE: 15390 TJD; 194 DOY; 10/07/13
IMG_START_TIME: 58843.00 SOD {16:20:43.00} UT, 6251.0 [sec] since BAT Trigger Time
SUN_POSTN: 112.90d {+07h 31m 36s} +21.77d {+21d 46' 09"}
SUN_DIST: 118.11 [deg] Sun_angle= -9.5 [hr] (East of Sun)
MOON_POSTN: 138.82d {+09h 15m 18s} +12.84d {+12d 50' 23"}
MOON_DIST: 106.07 [deg]
MOON_ILLUM: 5 [%]
GAL_COORDS: 49.85, 35.47 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 249.19, 50.77 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS: SWIFT-UVOT Nack Position.
COMMENTS: A point_source was not found.
- GCN Circular #10952
V. D'Elia (ASDC), N. Gehrels (NASA/GSFC), J. M. Gelbord (PSU),
E. A. Hoversten (PSU), K. L. Page (U Leicester) and M. H. Siegel (PSU)
report on behalf of the Swift Team:
Swift began a target of opportunity observation of GRB100713A on July
13, 2010 at 16:30 UT, approximately 1.9 hours after the burst was
detected by INTEGRAL. Swift data for these observations utilize Target
ID 20143.
The XRT began observing the field at 16:20:34.3 UT, 6.2 ks after the
INTEGRAL trigger. Using promptly downlinked data we find an
uncatalogued X-ray source located at RA, Dec 255.20192, 28.39489 which
is equivalent to:
RA(J2000) = 17h 00m 48.46s
Dec(J2000) = +28d 23' 41.6"
with an uncertainty of 4.9 arcseconds (radius, 90% containment). This
location is 29 arcseconds from the INTEGRAL position, within the
INTEGRAL error circle. This position may be improved as more data are
received; the latest position is available at
http://www.swift.ac.uk/sper. We cannot determine whether the source is
fading at the present time.
A power-law fit to a spectrum formed from promptly downlinked event
data gives a column density in excess of the Galactic value (5.01e+20
cm^-2, Kalberla et al. 2005), with an excess column of 7.2
(+8.61/-6.14) x 10^21 cm^-2 (90% confidence).
UVOT took a finding chart exposure of 150 seconds with the White filter
starting 6246 seconds after the INTEGRAL trigger. No credible afterglow
candidate has been found in the initial data products. The 2.7'x2.7' sub-image
covers 100% of the XRT error circle. The typical 3-sigma upper limit has
been about 19.6 mag. The 8'x8' region for the list of sources generated
on-board covers 100% of the XRT error circle. The list of sources is
typically complete to about 18 mag. No correction has been made for the
expected extinction corresponding to E(B-V) of 0.06.
Burst Advocate for this burst is V. D'Elia (delia AT asdc.asi.it).
Please contact the BA by email if you require additional information
regarding Swift followup of this burst. In extremely urgent cases, after
trying the Burst Advocate, you can contact the Swift PI by phone (see
Swift TOO web site for information: http://www.swift.psu.edu/too.html.)
- GCN Circular #10953
F. J. Aceituno, J. C. Tello, M. Jel=EDnek, P. Kub=E1nek, J. Gorosabel, S.
Guziy, A. J. Castro-Tirado (IAA-CSIC Granada) and A. de Ugarte Postigo
(INAF-OAB Brera), report:
"Following the detection of GRB 100713A by INTEGRAL (Mereghetti et al.
GCNC 10951), we have obtained optical images with the 0.6m TELMA robotic
telescope at the BOOTES-2 station and with 1.5m telescope at the
Observatorio de Sierra Nevada (OSN), both located in Southern Spain.
At the position of the X-ray afterglow detected by SWIFT/XRT (D'Elia et
al. GCNC 10952) we do not detect any optical source down to I =3D 23 in
the co-added 1.5m OSN image (3600-s exposure at 21:07 UT, i.e. 6.5-hr
after the onset of the burst).
Due to the low Galactic extinction (Av =3D 0.2), this INTEGRAL GRB is very
suitable for follow up. Deeper observations (specially at near-IR
wavelengths) are encouraged".
This message can be quoted.
- GCN Circular #10954
P. D'Avanzo (INAF-OAB), L. A. Antonelli (INAF-OAR), V. D'Elia (ASDC), D.
Fugazza (INAF-OAB), A. de Ugarte Postigo (INAF-OAB), D. Malesani
(DARK/NBI) on behalf of the CIBO collaboration report:
We observed the field of GRB100713A (Mereghetti et al. GCN 10951) with the
Italian 3.6m TNG telescope (La Palma, Canary Islands) equipped with the
DOLORES camera operated in imaging mode. Observations started on Jul 13 at
21:25 UT (~6.8 after the GRB) and were carried out in R and I band for a
total exposure time of 900s and 540s, respectively. We do not detect any
source within the XRT error circle (D'Elia et al., GCN 10952) in both
filters down to a limiting magnitude of I~22.6 and R~23.6 (3sigma c.l.,
calibrated against the USNO B1 catalogue). We note the presence of a faint
source visible in both our images and the SDSS close to the the border of
the XRT error circle at the following coordinates (J2000):
R.A.=17:00:48.1
Dec=+28:23:45.7
We thank Gian Paolo Tozzi and Giovanni Mainella for performing the
observations and for their support.
- GCN Circular #10955
G. Greco (INAF-Astronomical Observatory of BOLOGNA), C. Bartolini, A. Guarnieri, A. Piccioni
(University of Bologna), G. Pizzichini (INAF/IASF-Bologna), F. Giovannelli (INAF/IASF-Roma)
and A. Deblasi (INAF-Astronomical Observatory of BOLOGNA) report:
We observed the location of the GRB GRB 100713A (Mereghetti et al. 2010, GCN 10951)
with the 152 cm Cassini Telescope located in Loiano under clear sky conditions
(seeing approximately 2 arcsec).
One R-band observation (1x2400 sec) was done on 2010 July at 13.891 UT middle exposure time.
Comparison to the DSS (second epoch) reveals no new sources within the
INTEGRAL/IBAS error circle or the Swift/XRT error circle (D'Elia et al. 2010, GCN 10952).
Our 3-sigma limiting magnitude is R = 21 calibrated against the
USNO-B1.0 catalog stars and not corrected for the Galactic extinction.
This message can be cited.
- GCN Circular #10956
M. Nardini, T. Kruehler, and J. Greiner (all MPE Garching) report on behalf
of the GROND team:
We observed the field of GRB 100713A (INTEGRAL trigger 6041; Mereghetti et
al., GCN #10951) simultaneously in g'r'i'z'JHK with GROND (Greiner et al.
2008, PASP 120, 405) mounted at the 2.2 m MPI/ESO telescope at La Silla
Observatory (Chile).
Observations started at 23:46 UT on 2010 July 13th, 9.3 h after the GRB
trigger. They were performed at an average seeing of 2.6" and at an
average airmass of 2.5. With a total integration time of 13.2 min (12 min
for the IR), we do not detect any source within the Swift-XRT error circle
reported by D'Elia et al. (GCN #10952) down to
g' > 23.8,
r' > 22.9,
i' > 22.0,
z' > 21.5,
J > 18.8,
H > 17.4 and
K > 16.8
The given limits are derived based on calibrating the images against USNO
B1 catalogue and 2MASS field stars and are not corrected for the Galactic
foreground extinction corresponding to a reddening of E_(B-V)= 0.056 in
the direction of the burst (Schlegel et al. 1998).
We confirm the presence of a faint source close to the border of the XRT
error circle at the coordinates reported by D'Avanzo et al. (GCN 10954).
- GCN Circular #10957
M. De Pasquale (MSSL-UCL) and V. D'Elia (ASDC) on behalf of the Swift/UVOT
team report:
Swift/UVOT began settled observations of the INTEGRAL burst GRB100713A
(Mereghetti et al., GCN 10951) 6247s after the trigger.
At the position of the X-ray counterpart (D'Elia et al., GCN 10952), we do
not detect any optical afterglow in the exposures in UVOT filters down to
the following 3 sigma upper limits.
Filter T_start (s) T_stop (s) Exp (s) Mag upper limit
v 6403 6603 197 >19.6
wh 6247 12351 518 >21.8
b 11065 11965 880 >21.4
u 10152 11059 885 >20.7
uvw1 6813 6963 148 >19.8
uvm2 6608 6808 197 >19.6
The values quoted above are calculated using the UVOT photometric system
(Poole et al 2008, MNRAS, 383, 627) and are not corrected for the Galactic
extinction due to the reddening of E(B-V) = 0.06 in the direction of the
burst (Schlegel et al. 1998).
- GCN Circular #10959
H. Naito, T. Sako, D. Suzuki, S. Kobara and K. Omori (Nagoya Univ.) on
behalf of the MOA Collaboration, T. Nagayama, M. Kurita (Nagoya
Univ.), S. Crawford and S. Randriamampandry (South African
Astronomical Observatory) on behalf of the IRSF Collaboration report:
We searched for a NIR afterglow of the GRB 100713A detected by
INTEGRAL (Mereghetti et al., GCN 10951) starting from 19:42:07 UT on
2010 July 13 (5.1 hours after the burst) with the SIRIUS on the IRSF
1.4m telescope at SAAO in South Africa. In images of a 30 min exposure
with J, H and Ks filter, we did not find any object within the error
circle of the Swift XRT source position (V. D'Elia et al., GCN 10952).
A 3 sigma upper limits are the followings.
J > 18.9
H > 18.0
K > 17.4
This photometry was done by using the DoPHOT and calibrated against
the 2MASS cataloged stars. The Galactic extinction was not corrected.
- GCN Circular #10960
V. D'Elia and G. Stratta (ASDC) report on behalf of the Swift-XRT team:
We have analysed 6.0 ks of XRT data for GRB100713A (D'Elia et al. GCN
Circ. 10952), from 6.23 to 52.3 ks after the INTEGRAL trigger
(Mereghetti et al. GCN Circ. 10951). The data
are entirely in Photon Counting (PC) mode. Using 1772 s of PC mode data
and 2 UVOT images, we find an enhanced XRT position (using the XRT-UVOT
alignment and matching UVOT field sources to the USNO-B1 catalogue):
RA, Dec = 255.20133, +28.39434 which is equivalent to:
RA (J2000): 17 00 48.32
Dec(J2000): +28 23 39.6
with an uncertainty of 2.4 arcsec (radius, 90% confidence).
The light curve can be modelled with a power-law decay with a decay
index of alpha=1.25 (-0.8+0.9).
A spectrum formed from the PC mode data can be fitted with an absorbed
power-law with a photon spectral index of 2.50 (+0.78, -0.68). The
best-fitting absorption column is 2.2 (+2.0, -1.3) x 10^21 cm^-2, in
excess of the Galactic value of 5.0 x 10^20 cm^-2 (Kalberla et al.
2005). The counts to observed (unabsorbed) 0.3-10 keV flux conversion
factor deduced from this spectrum is 3.5 x 10^-11 (7.6 x 10^-10) erg
cm^-2 count^-1.
The results of the XRT-team automatic analysis are available at
http://www.swift.ac.uk/xrt_products/00020143.
This circular is an official product of the Swift-XRT team.
- GCN Circular #10961
P. D'Avanzo (INAF-OAB), L. A. Antonelli (INAF-OAR), V. D'Elia (ASDC), D.
Fugazza (INAF-OAB), A. de Ugarte Postigo (INAF-OAB), D. Malesani
(DARK/NBI) on behalf of the CIBO collaboration report:
Further inspection of our R and I-band TNG images of GRB 100713A (D'Avanzo
et al., GCN 10954) does not reveal any afterglow candidate at the refined
XRT position (D'Elia et al., GCN 10960). We note that the SDSS object
reported by D'Avanzo et al. (GCN 10954) and Nardini et al. (GCN 10956) is
significantly outside the XRT error circle.
- GCN Circular #10962
A. Pozanenko (IKI), A. Volnova (SAI MSU), B. Satovski (Astrotel), M.
Ibrahimov (MAO) report on behalf of larger GRB follow-up collaboration:
We observed the field of the INTEGRAL GRB 100713A (Mereghetti et al. GCN
10951) with AZT-22 telescope of Maidanak observatory in R band between July
13 (UT) 18:21 -- 18:56 under photometric conditions and seeing ~0.7".
A possible faint source (S/N = 2.2) was detected at coordinates (J2000)
RA=17 00 48.12 Dec = +28 23 40.2 with uncertainties 0.15" in both
coordinates. The source is at the edge of enhanced XRT error circle (D'Elia
et al. GCN 10960). At this time we cannot confirm the nature of the source
and comparison with TNG observation (D'Avanzo et al. GCN 10954) and/or
additional observation is necessary. The SDSS object reported by D'Avanzo et
al. (GCN 10954) and Nardini et al. (GCN 10956) is also clearly detected.
The photometry is based on several SDSS field stars and Lupton ugriz -> R
transformations :
T0+ Filter, Exposure, mag. Upper limit (3 sigma)
(mid, d) (s)
0.16830 R 300*6 24.4+/-0.5 24.0
The finding chart can be found at
http://grb.rssi.ru/GRB100713A/GRB100713A_AZT22.png
We thank Alexander Gusev for performing the observations and for his
support.
- GCN Circular #11043
V. Rumyantsev (CrAO), A. Pozanenko (IKI), A. Volnova (SAI MSU) report on
behalf of larger GRB follow-up collaboration:
We observed the field of the INTEGRAL GRB 100713A (Mereghetti et al. GCN
10951) with Shajn telescope of CrAO in VRI-filters starting July, 13 (UT)
21:56, i.e. 7.4 hours after burst.
We do not detect any sources in enhanced XRT error circle (D'Elia et al. GCN
10960). The photometry of stacked images based on SDSS star
J170053.83+282355.1 assuming R=16.46, I=16.24 and V=16.78 (the magnitudes
obtained from Lupton's SDSS ugriz -> VRI transformations).
T0+ Filter, Exposure, Upper Limit
(mid, d) (s)
0.3539 V 43x60 24.0
0.3546 R 43x60 24.0
0.3553 I 43x60 23.2
Since we do not detect the source observed at 3.75 hours after burst (GCN
10962) we can suggest the source reported in GCN 10962 as the afterglow
candidate.
- GCN Circular #11044
A. Pozanenko (IKI), A. Volnova (SAI MSU), B. Satovski (Astrotel), M.
Ibrahimov (MAO) report on behalf of larger GRB follow-up collaboration:
We observed the field of the INTEGRAL GRB 100713A (Mereghetti et al. GCN
10951) with AZT-22 telescope of Maidanak observatory in second epoch on July
17-19 under mean seeing of about 1.0".
We do not detect any sources in enhanced XRT error circle (D'Elia et al. GCN
10960).
The photometry of stacked image is based on five SDSS field stars and Lupton
ugriz -> R transformations :
T0+ Filter, Exposure, mag. Upper limit (3 sigma)
(mid, d) (s)
5.157 R 300*23 n/d 23.8
We thank Alexander Gusev for performing the observations and for his
support.
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