- GCN/BACODINE POSITION NOTICE
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Sat 12 Feb 11 01:09:34 UT
NOTICE_TYPE: Swift-BAT GRB Position
TRIGGER_NUM: 445321, Seg_Num: 0
GRB_RA: 69.053d {+04h 36m 13s} (J2000),
69.251d {+04h 37m 00s} (current),
68.165d {+04h 32m 40s} (1950)
GRB_DEC: +43.702d {+43d 42' 09"} (J2000),
+43.724d {+43d 43' 28"} (current),
+43.601d {+43d 36' 03"} (1950)
GRB_ERROR: 3.00 [arcmin radius, statistical only]
GRB_INTEN: 5194 [cnts] Image_Peak=309 [image_cnts]
TRIGGER_DUR: 1.024 [sec]
TRIGGER_INDEX: 146 E_range: 25-100 keV
BKG_INTEN: 29570 [cnts]
BKG_TIME: 4137.34 SOD {01:08:57.34} UT
BKG_DUR: 8 [sec]
GRB_DATE: 15604 TJD; 43 DOY; 11/02/12
GRB_TIME: 4148.73 SOD {01:09:08.73} UT
GRB_PHI: -155.19 [deg]
GRB_THETA: 33.36 [deg]
SOLN_STATUS: 0x3
RATE_SIGNIF: 21.51 [sigma]
IMAGE_SIGNIF: 10.65 [sigma]
MERIT_PARAMS: +1 +0 +0 +0 +2 +0 -5 +1 +32 +0
SUN_POSTN: 325.30d {+21h 41m 12s} -13.86d {-13d 51' 46"}
SUN_DIST: 109.56 [deg] Sun_angle= -6.9 [hr] (East of Sun)
MOON_POSTN: 58.76d {+03h 55m 02s} +22.91d {+22d 54' 50"}
MOON_DIST: 22.54 [deg]
MOON_ILLUM: 57 [%]
GAL_COORDS: 159.89, -2.46 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 73.88, 21.43 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS: SWIFT-BAT GRB Coordinates.
COMMENTS: This is a rate trigger.
COMMENTS: A point_source was found.
COMMENTS: This does not match any source in the on-board catalog.
COMMENTS: This does not match any source in the ground catalog.
COMMENTS: This is a GRB.
COMMENTS: This trigger occurred at longitude,latitude = 345.28,13.53 [deg].
- red DSS finding chart
ps-file
- GCN NOTICE
TITLE: GCN/SWIFT NOTICE
NOTICE_DATE: Sat 12 Feb 11 01:12:59 UT
NOTICE_TYPE: Swift-BAT GRB Lightcurve
TRIGGER_NUM: 445321, Seg_Num: 0
GRB_RA: 69.053d {+04h 36m 13s} (J2000),
69.251d {+04h 37m 00s} (current),
68.165d {+04h 32m 40s} (1950)
GRB_DEC: +43.702d {+43d 42' 09"} (J2000),
+43.724d {+43d 43' 28"} (current),
+43.601d {+43d 36' 03"} (1950)
GRB_DATE: 15604 TJD; 43 DOY; 11/02/12
GRB_TIME: 4148.73 SOD {01:09:08.73} UT
TRIGGER_INDEX: 146
GRB_PHI: -155.19 [deg]
GRB_THETA: 33.36 [deg]
DELTA_TIME: -18.00 [sec]
TRIGGER_DUR: 1.024 [sec]
SOLN_STATUS: 0x3
RATE_SIGNIF: 21.51 [sigma]
IMAGE_SIGNIF: 10.65 [sigma]
LC_URL: sw00445321000msb.lc
SUN_POSTN: 325.30d {+21h 41m 13s} -13.86d {-13d 51' 43"}
SUN_DIST: 109.56 [deg] Sun_angle= -6.9 [hr] (East of Sun)
MOON_POSTN: 58.79d {+03h 55m 10s} +22.92d {+22d 55' 04"}
MOON_DIST: 22.52 [deg]
MOON_ILLUM: 57 [%]
GAL_COORDS: 159.89, -2.46 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS: 73.88, 21.43 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS: SWIFT-BAT GRB Lightcurve.
COMMENTS:
COMMENTS: The next comments were copied from the BAT_POS Notice:
COMMENTS: This is a rate trigger.
COMMENTS: A point_source was found.
COMMENTS: This does not match any source in the on-board catalog.
COMMENTS: This does not match any source in the ground catalog.
COMMENTS: This is a GRB.
COMMENTS: This trigger occurred at longitude,latitude = 345.28,13.53 [deg].
- GCN Circular #11699
V. D'Elia (ASDC), W. H. Baumgartner (GSFC/UMBC),
A. P. Beardmore (U Leicester), N. Gehrels (NASA/GSFC),
J. M. Gelbord (PSU), S. T. Holland (CRESST/USRA/GSFC),
J. A. Kennea (PSU), H. A. Krimm (CRESST/GSFC/USRA),
N. P. M. Kuin (UCL-MSSL), C. B. Markwardt (NASA/GSFC),
D. M. Palmer (LANL), M. H. Siegel (PSU) and G. Stratta (ASDC) report
on behalf of the Swift Team:
At 01:09:08 UT, the Swift Burst Alert Telescope (BAT) triggered and
located GRB 110212A (trigger=445321). Swift did not slew immediately
to the burst because of an observing constraint.
The BAT on-board calculated location is
RA, Dec 69.053, +43.702 which is
RA(J2000) = 04h 36m 13s
Dec(J2000) = +43d 42' 09"
with an uncertainty of 3 arcmin (radius, 90% containment, including
systematic uncertainty). The BAT light curve showed a multiply-peaked
structure with a duration of about 10 sec. The peak count rate
was ~3000 counts/sec (15-350 keV), at ~0 sec after the trigger.
Due to a Moon observing constraint, Swift cannot slew to the BAT
position until 19:02 UT on 2011 February 13. There will thus be no XRT
or UVOT data for this trigger before this time.
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 #11700
W. Zheng (U Mich), report on behalf of the ROTSE collaboration:
ROTSE-IIIb, located at McDonald Observatory, Texas, responded to GRB
110212A (Swift trigger 445321; D'Elia et al., GCN 11699), producing
images beginning 31.0 s after the GCN notice time. An automated response
took the first image at 01:09:39 UT, 31.0 s after the burst.
Unfortunately the sky is still under twilight conditions, the first
useful image stared 725s after the burst.
Comparison to the DSS (second epoch) reveals no new sources within the
3-sigma Swift/BAT error circle for co-added images with a sets of 10
calibrated relative to USNO A2.0 (R). We set the following specific
limits.
start UT end UT t_exp(s) mlim t_start-tGRB(s) Coadd?
--------------------------------------------------------------------
01:21:13.5 01:25:54.7 281 16.8 725.5 Y
01:26:04.0 01:30:45.5 281 17.1 1016.0 Y
01:30:54.3 01:35:35.5 281 17.2 1306.3 Y
01:35:44.3 01:40:25.0 280 17.4 1596.3 Y
- GCN Circular #11701
Martin Jelinek and Javier Gorosabel (IAA-CSIC Granada)
on behalf of BOOTES collaboration report:
" The 60 cm robotic telescope TELMA at the BOOTES-2 station
located in Malaga (Spain) reacted automatically to GRB110212A
(GCNC 11699). The first image was obtained 32.1s after the GRB
trigger time (and 7.3s after the reception of the trigger).
A large number of 3-s R-band images was obtained.
No new source was found on 40 individual images (R>~15) taken
between 32 and 253s after the GRB, nor at their 120s (40x3s)
combination (R>~16.5). "
- GCN Circular #11702
Adria C. Updike (NASA/GSFC), Dieter H. Hartmann (Clemson University),
Brian Murphy, and Andrew N. Darragh (Butler University) report:
We observed the field of GRB 110212A (D'Elia et al., GCN 11699) with the
SARA-North 0.9m telescope at KPNO beginning 58 minutes after the trigger
under good conditions. We obtained 24 minutes of stacked exposures in the
R band and 6 minutes of stacked exposures in the I band.
We detect no new sources within nearly 2 sigma of the BAT error circle
down to limiting magnitudes of R > 20 and I > 19 relative to the USNO B1.0
catalog.
- GCN Circular #11703
T. N. Ukwatta (MSU),S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC),
J. R. Cummings (GSFC/UMBC), V. D'Elia (ASDC), E. E. Fenimore (LANL),
N. Gehrels (GSFC), H. A. Krimm (GSFC/USRA), C. B. Markwardt (GSFC),
D. M. Palmer (LANL), T. Sakamoto (GSFC/UMBC), G. Sato (ISAS),
M. Stamatikos (OSU), J. Tueller (GSFC), (i.e. the Swift-BAT team):
Using the data set from T-239 to T+630 sec from the recent telemetry downlink,
we report further analysis of BAT GRB 110212A (trigger #445321)
(D'Elia, et al., GCN Circ. 11699). The BAT ground-calculated position is
RA, Dec = 69.025, 43.716 deg which is
RA(J2000) = 04h 36m 06.0s
Dec(J2000) = +43d 42' 56.2"
with an uncertainty of 1.4 arcmin, (radius, sys+stat, 90% containment).
The partial coding was 71%.
The mask-weighted light curve shows two peaks, the first from T-0.6 s to T+1.6 s
and the second from T+1.8 to T+2.6 s. T90 (15-350 keV) is 3.3 +- 0.5 sec
(estimated error including systematics).
The time-averaged spectrum from T-1.8 to T+2.6 sec is best fit by a power law
with an exponential cutoff. This fit gives a photon index 0.78 +- 0.85,
and Epeak of 44.6 +- 10.2 keV (chi squared 54.29 for 56 d.o.f.). For this
model the total fluence in the 15-150 keV band is 2.4 +- 0.3 x 10-7 erg/cm2
and the 1-sec peak flux measured from T+0.26 sec in the 15-150 keV band is
1.5 +- 0.2 ph/cm2/sec. A fit to a simple power law gives a photon index
of 1.93 +- 0.15 (chi squared 61.44 for 57 d.o.f.). All the quoted errors
are at the 90% confidence level.
The results of the batgrbproduct analysis are available at
http://gcn.gsfc.nasa.gov/notices_s/445321/BA/
- GCN Circular #11704
T. Sakamoto (UMBC/GSFC), D. Donato (UMD/GSFC), N. Gehrels (GSFC),
T. Okajima (GSFC), Y. Urata (NCU), C.A. Wallace (FGCU)
We observed the field of GRB 110212A detected by Swift
(trigger #445321; D'Elia et al., GCN Circ. 11699) with the 14-inch
Goddard Robotic Telescope (GRT) located at the Goddard Geophysical
and Astronomical Observatory (http://cddisa.gsfc.nasa.gov/ggao/).
A total 209 images of 5 sec (200 images) and 30 sec (9 images)
exposures were taken in the R filter starting from February 12 01:10:20 (UT),
about 71 seconds after the trigger (37 seconds after the BAT position notice),
and stopped on February 12 01:45:53 (UT). We do not detect the optical
afterglow both in the individual images and the stacked image inside the
BAT error circle (Ukwatta et al., GCN #11703). The estimated five sigma upper
limit of the combined image (total exposure of 1270 sec) is ~18.9 mag using
the USNO-B1 catalog.
- GCN Circular #11711
D. Kuroda, K. Yanagisawa, Y. Shimizu, H. Toda (OAO, NAOJ),
S. Nagayama (NAOJ), M. Yoshida (Hiroshima), K. Ohta (Kyoto)
and N. Kawai(Tokyo Tech)
report on behalf of the MITSuME collaboration:
We observed the field of GRB 110201A (D'Elia et al., GCN 11699)
with the optical three color (g', Rc and Ic) CCD camera attached
to the MITSuME 50cm telescope of Okayama Astrophysical Observatory.
The observation started on 2011-02-12 11:11:56 UT (~10 hours
after the burst). We did not find any new point source within the
BAT refined error circle (Ukwatta et al., GCNC 11703) in all the
three bands.
Three sigma upper limits of the OT are listed below. We used
GSC2.3 catalog for flux calibration.
T0+[day] MID-UT T-EXP[sec] g' Rc Ic
------------------------------------------------------
0.46043 12:12:08 5880.0 >20.0 >19.7 >19.0
------------------------------------------------------
T0+ : Elapsed time after the burst [day]
T-EXP: Total Exposure time [sec]
- GCN Circular #11729
V. D'Elia, G. Stratta (ASDC), N.P.M. Kuin (MSSL-UCL), report on behalf
of the Swift team:
Swift XRT and UVOT instruments began observing the field of the BAT
burst GRB 110212A (D'Elia et al., GCN circ 11699) on 2011-02-13 at 23:21,
that is, 46 h (166.3 ks) after the burst trigger due to a Moon constraint.
The observations ended on 2011-02-14 at 02:47.
No candidate afterglow is detected in the BAT error circle.
UVOT observed in the uvm2 filter, with a total exposure time of 5885 s.
No new source is found in or near the BAT error circle from comparison
to the DSS image. The 5-sigma upper limit for a source is uvm2 > 20.3
magnitudes.
XRT observations have a total exposure time of 5967 s, and yield a three sigma
upper limit of 1.4e-3 counts/second for any new source in the BAT
error circle.
This circular is an official product of the Swift Team.
- GCN Report 320.1
GCN_Report 320.1 has been posted:
http://gcn.gsfc.nasa.gov/reports/report_320_1.pdf
by V. D Elia
at ASDC
titled: "Swift Observations of GRB 110212A"
Previous IAU Circulars 