- GCN/BACODINE POSITION NOTICE
TITLE: GCN/INTEGRAL NOTICE
NOTICE_DATE: Tue 24 Dec 13 16:54:49 UT
NOTICE_TYPE: INTEGRAL Wakeup
TRIGGER_NUM: 6412, Sub_Num: 0
GRB_RA: 296.8184d {+19h 47m 16s} (J2000),
296.9546d {+19h 47m 49s} (current),
296.3311d {+19h 45m 19s} (1950)
GRB_DEC: +31.6721d {+31d 40' 20"} (J2000),
+31.7073d {+31d 42' 26"} (current),
+31.5476d {+31d 32' 51"} (1950)
GRB_ERROR: 3.18 [arcmin, radius, statistical only]
GRB_INTEN: 8.71 [sigma]
GRB_TIME: 60885.07 SOD {16:54:45.07} UT
GRB_DATE: 16650 TJD; 358 DOY; 13/12/24
SC_RA: 298.82 [deg] (J2000)
SC_DEC: 34.01 [deg] (J2000)
SUN_POSTN: 273.32d {+18h 13m 16s} -23.40d {-23d 24' 06"}
SUN_DIST: 59.57 [deg] Sun_angle= -1.6 [hr] (East of Sun)
MOON_POSTN: 172.24d {+11h 28m 59s} -0.39d {-00d 23' 39"}
MOON_DIST: 119.21 [deg]
GAL_COORDS: 67.11, 3.25 [deg] galactic lon,lat of the burst
ECL_COORDS: 308.20, 51.61 [deg] ecliptic lon,lat of the burst
COMMENTS: INTEGRAL GRB Coordinates.
COMMENTS: Time_Scale=0.3199 and Time_Error=8.0000.
COMMENTS: Possibly real GRB event
- red DSS finding chart
ps-file
- GCN NOTICE
TITLE: GCN/INTEGRAL NOTICE
NOTICE_DATE: Tue 24 Dec 13 17:57:37 UT
NOTICE_TYPE: INTEGRAL Offline
TRIGGER_NUM: 6412, Sub_Num: 1
GRB_RA: 296.8334d {+19h 47m 20s} (J2000),
296.9697d {+19h 47m 53s} (current),
296.3461d {+19h 45m 23s} (1950)
GRB_DEC: +31.6676d {+31d 40' 03"} (J2000),
+31.7028d {+31d 42' 10"} (current),
+31.5430d {+31d 32' 35"} (1950)
GRB_ERROR: 2.00 [arcmin, radius, statistical only]
GRB_INTEN: 8.71 [sigma]
GRB_TIME: 60885.07 SOD {16:54:45.07} UT
GRB_DATE: 16650 TJD; 358 DOY; 13/12/24
SC_RA: 298.82 [deg] (J2000)
SC_DEC: 34.01 [deg] (J2000)
SUN_POSTN: 273.37d {+18h 13m 28s} -23.40d {-23d 24' 02"}
SUN_DIST: 59.55 [deg] Sun_angle= -1.6 [hr] (East of Sun)
MOON_POSTN: 172.75d {+11h 31m 00s} -0.57d {-00d 34' 22"}
MOON_DIST: 118.92 [deg]
GAL_COORDS: 67.12, 3.24 [deg] galactic lon,lat of the burst
ECL_COORDS: 308.21, 51.61 [deg] ecliptic lon,lat of the burst
COMMENTS: INTEGRAL GRB Coordinates.
COMMENTS: Time_Scale=0.3199 and Time_Error=8.0000.
COMMENTS: refined_coordinates_after_offline_analysis
- GCN Circular #15607
S.Mereghetti (IASF-Milano), D.Gotz (CEA, Saclay), E.Bozzo, C.Ferrigno,
D.Malishev (ISDC, Versoix), and J.Borkowski (CAMK, Torun) on behalf of the
IBAS Localization Team report:
a short gamma ray burst lasting about 0.8 s has been detected by IBAS in the
IBIS/ISGRI data at 16:54:37 UT of 24 December.
The refined coordinates (J2000) are:
R.A.= 296.8337 deg
DEC.= +31.6677 deg
with an uncertainty of 2 arcmin (90% c.l.).
The burst had a peak flux of about 1 counts/cm2/s (20-200 keV, 0.1-s
integration time) and a fluence in the same energy range of about 3x10e-8
erg/cmq.
A plot of the light curve will be posted at
http://ibas.iasf-milano.inaf.it/IBAS_Results.html
- GCN Circular #15608
E. Gorbovskoy, V. Lipunov, V.Kornilov, D.Kuvshinov, A.Belinski, N.Tyurina,
N.Shatskiy, P.Balanutsa, D.Zimnukhov, A.Kuznetsov, V.V.Chazov,
D.Denisenko, A.Sankovich
Sternberg Astronomical Institute, Moscow State University
A. Tlatov, A.V. Parhomenko, D. Dormidontov, V.Sennik
Kislovodsk Solar Station of the Pulkovo Observatory
V.Yurkov, Yu.Sergienko, D.Varda, E.Sinyakov
Blagoveschensk Educational State University, Blagoveschensk
K.Ivanov, S.Yazev, N.M.Budnev, O.Gres, O.Chuvalaev, V.A.Poleshchuk
Irkutsk State University
V.Krushinski, I.Zalozhnih, A. Popov
Ural Federal University, Kourovka
Hugo Levato and Carlos Saffe
Instituto de Ciencias Astronomicas, de la Tierra y del Espacio (ICATE)
Claudio Mallamaci, Carlos Lopez and Federico Podest
Observatorio Astronomico Felix Aguilar (OAFA)
MASTER II robotic telescope (MASTER-Net: http://observ.pereplet.ru)
located in Kislovodsk was pointed to the GRB131224A 33 sec after notice
time and 39 sec after trigger time at 2013-12-24 16:55:24 UT in two
polarizations.
Observations were made on high (z=75 deg) zenith distance and on the
extremely stars rich field (with galactic latitude b=3 deg).
On our first (10s exposure) set we haven`t found optical transient within
INTEGRAL error-box (S.Mereghetti et. al. GCN 15607).
The 5-sigma upper limit has been about 15.5 mag
The message may be cited.
- GCN Circular #15610
B.P Gompertz, K.L. Page (U. Leicester) and M. De Pasquale (UCL-MSSL)
report on behalf of the Swift-XRT team:
We report on Swift-XRT observations of the field of the INTEGRAL
discovered GRB 131224A (Mereghetti et al. GCN Circ 15607), starting 10.8
ks after the trigger.
XRT began observing the field on 2013-12-24 at 19:53:56 UT (10.8 ks after
trigger), with an exposure time of of 3.96 ks. No source is detected
within the INTEGRAL error circle. The 3-sigma upper limit on the count
rate is 3.5E-03 cts/s, which is 1.4E-13 erg cm^-2 s^-1 using a typical
flux conversion of 4E-11 erg cm^-2 count^-1.
This circular is an official product of the Swift-XRT team.
- GCN Circular #15615
A. A. Breeveld (UCL-MSSL) and M. De Pasquale (UCL-MSSL)
report on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 131224A
10748 s after the INTEGRAL trigger (Mereghetti et al., GCN Circ. 15607).
The field is very crowded and no optical afterglow consistent with the
INTEGRAL position is detected in the initial UVOT exposures. Preliminary
3-sigma upper limits using the UVOT photometric system (Breeveld et al.
2011, AIP Conf. Proc. 1358, 373) for the initial exposures are:
Filter T_start(s) T_stop(s) Exp(s) Mag
u 10748 18662 3918 >21.1
The magnitudes in the table are not corrected for the strong Galactic
extinction due to the reddening of E(B-V) = 0.96 in the direction of the
burst (Schlegel et al. 1998).
- GCN Circular #15626
W. Fong, B. A. Zauderer and E. Berger (Harvard) report:
"We observed the field of the INTEGRAL short-duration GRB 131224A
(Mereghetti et al., GCN 15607) with the Karl G. Jansky Very Large Array
(VLA). We obtained two sets of 1-hour observations beginning on 2013 Dec
24.907 UT and 2013 Dec 26.971 UT (0.202 and 2.267 days post-burst,
respectively) at a mean frequency of 5.8 GHz. We find no evidence for
variability within the INTEGRAL error circle to a 3-sigma limit of 33
microJy at the time of the two observations.
We thank the VLA staff for quickly executing these observations."
Previous IAU Circulars 