Gamma-ray Burst 111210A

(All information courtesy of the instrument teams.)

Previous IAU Circulars

none

Results of Observations

GCN/BACODINE POSITION NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 10 Dec 11 14:37:24 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     509419,   Seg_Num: 0
GRB_RA:          191.488d {+12h 45m 57s} (J2000),
                 191.643d {+12h 46m 34s} (current),
                 190.841d {+12h 43m 22s} (1950)
GRB_DEC:          -7.167d {-07d 10' 01"} (J2000),
                  -7.232d {-07d 13' 55"} (current),
                  -6.894d {-06d 53' 38"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       1622 [cnts]    Image_Peak=174 [image_cnts]
TRIGGER_DUR:     0.256 [sec] 
TRIGGER_INDEX:   123     E_range: 25-100 keV
BKG_INTEN:       23681 [cnts]
BKG_TIME:        52608.33 SOD {14:36:48.33} UT
BKG_DUR:         8 [sec]
GRB_DATE:        15905 TJD;   344 DOY;   11/12/10
GRB_TIME:        52623.18 SOD {14:37:03.18} UT
GRB_PHI:         -48.16 [deg]
GRB_THETA:        10.10 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     30.90 [sigma]
IMAGE_SIGNIF:    10.85 [sigma]
MERIT_PARAMS:     +1  +0  +0  -2  +2  +0  +0  +0 -42  +0 
SUN_POSTN:       257.15d {+17h 08m 36s}  -22.91d {-22d 54' 40"}
SUN_DIST:         64.67 [deg]   Sun_angle= 4.4 [hr] (West of Sun)
MOON_POSTN:       77.26d {+05h 09m 03s}  +22.66d {+22d 39' 42"}
MOON_DIST:       115.24 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      300.52, 55.68 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      193.36, -2.06 [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 = 238.29,20.58 [deg].

red DSS finding chart ps-file

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 10 Dec 11 14:38:13 UT
NOTICE_TYPE:     Swift-XRT Nack-Position
TRIGGER_NUM:     509419,   Seg_Num: 0
POINT_RA:        191.480d {+12h 45m 55s} (J2000)
POINT_DEC:        -7.160d {-07d 09' 36"} (J2000)
IMG_START_DATE:  15905 TJD;   344 DOY;   11/12/10
IMG_START_TIME:  52684.01 SOD {14:38:04.01} UT,   60.8 [sec] since BAT Trigger Time
COUNTS:          15    Min_needed= 20
STD_DEV:         0.00   Max_StdDev_for_Good=28.44 [arcsec]
PH2_ITER:        2    Max_iter_allowed= 4
ERROR_CODE:      1
COMMENTS:        SWIFT-XRT Nack Position.  
COMMENTS:        No source found in the image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 10 Dec 11 14:40:52 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     509419,   Seg_Num: 0
GRB_RA:          191.488d {+12h 45m 57s} (J2000),
                 191.643d {+12h 46m 34s} (current),
                 190.841d {+12h 43m 22s} (1950)
GRB_DEC:          -7.167d {-07d 10' 01"} (J2000),
                  -7.232d {-07d 13' 55"} (current),
                  -6.894d {-06d 53' 38"} (1950)
GRB_DATE:        15905 TJD;   344 DOY;   11/12/10
GRB_TIME:        52623.18 SOD {14:37:03.18} UT
TRIGGER_INDEX:   123
GRB_PHI:         -48.16 [deg]
GRB_THETA:        10.10 [deg]
DELTA_TIME:      -43.00 [sec]
TRIGGER_DUR:     0.256 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     30.90 [sigma]
IMAGE_SIGNIF:    10.85 [sigma]
LC_URL:          sw00509419000msb.lc
SUN_POSTN:       257.15d {+17h 08m 37s}  -22.91d {-22d 54' 41"}
SUN_DIST:         64.67 [deg]   Sun_angle= 4.4 [hr] (West of Sun)
MOON_POSTN:       77.30d {+05h 09m 11s}  +22.66d {+22d 39' 41"}
MOON_DIST:       115.21 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      300.52, 55.68 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      193.36, -2.06 [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 = 238.29,20.58 [deg].

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 10 Dec 11 14:42:26 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     509419,   Seg_Num: 0
POINT_RA:        191.479d {+12h 45m 55s} (J2000)
POINT_DEC:        -7.160d {-07d 09' 35"} (J2000)
POINT_ROLL:      111.977d
IMG_START_DATE:  15905 TJD;   344 DOY;   11/12/10
IMG_START_TIME:  52687.78 SOD {14:38:07.78} UT,   64.6 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        5.570
N_STARS:         16
X_OFFSET:        574 [pixels]
Y_OFFSET:        538 [pixels]
X_MAX:           1533 [pixels]
Y_MAX:           1497 [pixels]
DET_THRESH:      20
PHOTO_THRESH:    12
SL_URL:          sw00509419000msufc0064.fits
SUN_POSTN:       257.15d {+17h 08m 37s}  -22.91d {-22d 54' 41"}
SUN_DIST:         64.68 [deg]   Sun_angle= 4.4 [hr] (West of Sun)
MOON_POSTN:       77.31d {+05h 09m 15s}  +22.66d {+22d 39' 41"}
MOON_DIST:       115.18 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      300.50, 55.69 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      193.35, -2.05 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 10 Dec 11 14:42:53 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     509419,   Seg_Num: 0
POINT_RA:        191.479d {+12h 45m 55s} (J2000)
POINT_DEC:        -7.160d {-07d 09' 35"} (J2000)
POINT_ROLL:      111.977d
IMG_START_DATE:  15905 TJD;   344 DOY;   11/12/10
IMG_START_TIME:  52687.78 SOD {14:38:07.78} UT,   64.6 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        5.570
N_STARS:         16
X_OFFSET:        574 [pixels]
Y_OFFSET:        538 [pixels]
X_MAX:           1533 [pixels]
Y_MAX:           1497 [pixels]
DET_THRESH:      20
PHOTO_THRESH:    12
SL_URL:          sw00509419000msufc0064.fits
SUN_POSTN:       257.15d {+17h 08m 37s}  -22.91d {-22d 54' 41"}
SUN_DIST:         64.68 [deg]   Sun_angle= 4.4 [hr] (West of Sun)
MOON_POSTN:       77.32d {+05h 09m 16s}  +22.66d {+22d 39' 41"}
MOON_DIST:       115.18 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      300.50, 55.69 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      193.35, -2.05 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Source List.  
COMMENTS:        If you have elected to receive attachments:  
COMMENTS:        The uvot_catalog_srclist.fits.gz file does not exist; skipping the attachment.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 10 Dec 11 14:44:38 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     509419,   Seg_Num: 0
POINT_RA:        191.479d {+12h 45m 55s} (J2000)
POINT_DEC:        -7.160d {-07d 09' 35"} (J2000)
ROLL:            111.977d
IMG_START_DATE:  15905 TJD;   344 DOY;   11/12/10
IMG_START_TIME:  52687.78 SOD {14:38:07.78} UT,   64.6 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     345220695
X_OFFSET:        893 [pixels]
Y_OFFSET:        857 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1053
Y_GRB_POS:       1017
BINNING_INDEX:   1
IM_URL:          sw00509419000msuni0072.fits
SUN_POSTN:       257.16d {+17h 08m 37s}  -22.91d {-22d 54' 42"}
SUN_DIST:         64.68 [deg]   Sun_angle= 4.4 [hr] (West of Sun)
MOON_POSTN:       77.33d {+05h 09m 20s}  +22.66d {+22d 39' 41"}
MOON_DIST:       115.16 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      300.50, 55.69 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      193.35, -2.05 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Image.  
COMMENTS:        The GRB Position came from the Window Position in the Mode Command.  
COMMENTS:        The image has 2x2 binning (compression).

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 10 Dec 11 14:44:57 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     509419,   Seg_Num: 0
POINT_RA:        191.479d {+12h 45m 55s} (J2000)
POINT_DEC:        -7.160d {-07d 09' 35"} (J2000)
ROLL:            111.977d
IMG_START_DATE:  15905 TJD;   344 DOY;   11/12/10
IMG_START_TIME:  52687.78 SOD {14:38:07.78} UT,   64.6 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     345220695
X_OFFSET:        893 [pixels]
Y_OFFSET:        857 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1053
Y_GRB_POS:       1017
BINNING_INDEX:   1
IM_URL:          sw00509419000msuni0072.fits
SUN_POSTN:       257.16d {+17h 08m 37s}  -22.91d {-22d 54' 42"}
SUN_DIST:         64.69 [deg]   Sun_angle= 4.4 [hr] (West of Sun)
MOON_POSTN:       77.33d {+05h 09m 20s}  +22.66d {+22d 39' 41"}
MOON_DIST:       115.16 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      300.50, 55.69 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      193.35, -2.05 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Image.  
COMMENTS:        The GRB Position came from the Window Position in the Mode Command.  
COMMENTS:        The image has 2x2 binning (compression).  
COMMENTS:        If you have elected to receive attachments:  
COMMENTS:        The uvot_catalog_image.fits.gz file does not exist; skipping the attachment.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 10 Dec 11 14:45:05 UT
NOTICE_TYPE:     Swift-XRT Position
TRIGGER_NUM:     509419,   Seg_Num: 0
GRB_RA:          191.4748d {+12h 45m 53.95s} (J2000),
                 191.6295d {+12h 46m 31.07s} (current),
                 190.8276d {+12h 43m 18.63s} (1950)
GRB_DEC:          -7.1656d {-07d 09' 56.1"} (J2000),
                  -7.2307d {-07d 13' 50.6"} (current),
                  -6.8925d {-06d 53' 32.8"} (1950)
GRB_ERROR:       3.8 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  15905 TJD;   344 DOY;   11/12/10
IMG_START_TIME:  52695.00 SOD {14:38:15.00} UT,   71.8 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       257.16d {+17h 08m 37s}  -22.91d {-22d 54' 42"}
SUN_DIST:         64.69 [deg]   Sun_angle= 4.4 [hr] (West of Sun)
MOON_POSTN:       77.34d {+05h 09m 21s}  +22.66d {+22d 39' 41"}
MOON_DIST:       115.16 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      300.49, 55.68 [deg] galactic lon,lat of the burst
ECL_COORDS:      193.35, -2.06 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.  
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 0.58% < P(seren) < 1.1%.

GCN Circular #12650
M. H. Siegel (PSU), S. D. Barthelmy (GSFC), A. P. Beardmore (U Leicester), D. N. Burrows (PSU), V. D'Elia (ASDC), P. A. Evans (U Leicester), N. Gehrels (NASA/GSFC), C. Guidorzi (U Ferrara), S. T. Holland (CRESST/USRA/GSFC), J. A. Kennea (PSU), A. Y. Lien (NASA/GSFC/ORAU), C. B. Markwardt (NASA/GSFC), F. E. Marshall (NASA/GSFC), A. Melandri (INAF-OAB), P. T. O'Brien (U Leicester), D. M. Palmer (LANL), B. Sbarufatti (INAF-OAB/PSU), E. Troja (NASA/GSFC/ORAU) and B.-B. Zhang (PSU) report on behalf of the Swift Team:
At 14:37:03 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 111210A (trigger=509419). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 191.488, -7.167 which is
```
   RA(J2000) = 12h 45m 57s
   Dec(J2000) = -07d 10' 01"
```
with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed a double-peaked structure with a duration of about 2.5 sec. The peak count rate was ~6000 counts/sec (15-350 keV), at ~0 sec after the trigger.
The XRT began observing the field at 14:38:04.0 UT, 60.8 seconds after the BAT trigger. Using promptly downlinked data we find an uncatalogued X-ray source located at RA, Dec 191.47507, -7.16565 which is equivalent to:
```
   RA(J2000)  = 12h 45m 54.02s
   Dec(J2000) = -07d 09' 56.3"
```
with an uncertainty of 3.8 arcseconds (radius, 90% containment). This location is 46 arcseconds from the BAT onboard position, within the BAT 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 consistent with the Galactic value of 1.92 x 10^20 cm^-2 (Kalberla et al. 2005).
UVOT took a finding chart exposure of 150 seconds with the White filter starting 64 seconds after the BAT 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. No correction has been made for the expected extinction corresponding to E(B-V) of 0.03.
Burst Advocate for this burst is M. H. Siegel (siegel AT astro.psu.edu). 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 NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 10 Dec 11 14:49:53 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     509419,   Seg_Num: 0
POINT_RA:        191.478d {+12h 45m 55s} (J2000)
POINT_DEC:        -7.158d {-07d 09' 29"} (J2000)
POINT_ROLL:      111.978d
IMG_START_DATE:  15905 TJD;   344 DOY;   11/12/10
IMG_START_TIME:  52899.73 SOD {14:41:39.73} UT,   276.6 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        1.676
N_STARS:         31
X_OFFSET:        334 [pixels]
Y_OFFSET:        298 [pixels]
X_MAX:           1773 [pixels]
Y_MAX:           1737 [pixels]
DET_THRESH:      11
PHOTO_THRESH:    5
SL_URL:          sw00509419000msufc0276.fits
SUN_POSTN:       257.16d {+17h 08m 38s}  -22.91d {-22d 54' 43"}
SUN_DIST:         64.69 [deg]   Sun_angle= 4.4 [hr] (West of Sun)
MOON_POSTN:       77.38d {+05h 09m 31s}  +22.66d {+22d 39' 40"}
MOON_DIST:       115.12 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      300.50, 55.69 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      193.35, -2.05 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 10 Dec 11 14:50:03 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     509419,   Seg_Num: 0
POINT_RA:        191.478d {+12h 45m 55s} (J2000)
POINT_DEC:        -7.158d {-07d 09' 29"} (J2000)
POINT_ROLL:      111.978d
IMG_START_DATE:  15905 TJD;   344 DOY;   11/12/10
IMG_START_TIME:  52899.73 SOD {14:41:39.73} UT,   276.6 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        1.676
N_STARS:         31
X_OFFSET:        334 [pixels]
Y_OFFSET:        298 [pixels]
X_MAX:           1773 [pixels]
Y_MAX:           1737 [pixels]
DET_THRESH:      11
PHOTO_THRESH:    5
SL_URL:          sw00509419000msufc0276.fits
SUN_POSTN:       257.16d {+17h 08m 38s}  -22.91d {-22d 54' 43"}
SUN_DIST:         64.69 [deg]   Sun_angle= 4.4 [hr] (West of Sun)
MOON_POSTN:       77.38d {+05h 09m 32s}  +22.66d {+22d 39' 40"}
MOON_DIST:       115.12 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      300.50, 55.69 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      193.35, -2.05 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Source List.  
COMMENTS:        If you have elected to receive attachments:  
COMMENTS:        The uvot_catalog_srclist.fits.gz file does not exist; skipping the attachment.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 10 Dec 11 14:51:06 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     509419,   Seg_Num: 0
POINT_RA:        191.478d {+12h 45m 55s} (J2000)
POINT_DEC:        -7.158d {-07d 09' 29"} (J2000)
ROLL:            111.978d
IMG_START_DATE:  15905 TJD;   344 DOY;   11/12/10
IMG_START_TIME:  52899.73 SOD {14:41:39.73} UT,   276.6 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     345220907
X_OFFSET:        893 [pixels]
Y_OFFSET:        857 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1053
Y_GRB_POS:       1017
BINNING_INDEX:   1
IM_URL:          sw00509419000msuni0284.fits
SUN_POSTN:       257.16d {+17h 08m 38s}  -22.91d {-22d 54' 43"}
SUN_DIST:         64.69 [deg]   Sun_angle= 4.4 [hr] (West of Sun)
MOON_POSTN:       77.39d {+05h 09m 34s}  +22.66d {+22d 39' 40"}
MOON_DIST:       115.11 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      300.50, 55.69 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      193.35, -2.05 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Image.  
COMMENTS:        The GRB Position came from the Window Position in the Mode Command.  
COMMENTS:        The image has 2x2 binning (compression).

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 10 Dec 11 14:51:25 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     509419,   Seg_Num: 0
POINT_RA:        191.478d {+12h 45m 55s} (J2000)
POINT_DEC:        -7.158d {-07d 09' 29"} (J2000)
ROLL:            111.978d
IMG_START_DATE:  15905 TJD;   344 DOY;   11/12/10
IMG_START_TIME:  52899.73 SOD {14:41:39.73} UT,   276.6 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     345220907
X_OFFSET:        893 [pixels]
Y_OFFSET:        857 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1053
Y_GRB_POS:       1017
BINNING_INDEX:   1
IM_URL:          sw00509419000msuni0284.fits
SUN_POSTN:       257.16d {+17h 08m 39s}  -22.91d {-22d 54' 43"}
SUN_DIST:         64.69 [deg]   Sun_angle= 4.4 [hr] (West of Sun)
MOON_POSTN:       77.40d {+05h 09m 35s}  +22.66d {+22d 39' 40"}
MOON_DIST:       115.10 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      300.50, 55.69 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      193.35, -2.05 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Image.  
COMMENTS:        The GRB Position came from the Window Position in the Mode Command.  
COMMENTS:        The image has 2x2 binning (compression).  
COMMENTS:        If you have elected to receive attachments:  
COMMENTS:        The uvot_catalog_image.fits.gz file does not exist; skipping the attachment.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 10 Dec 11 14:51:11 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     509419,   Seg_Num: 0
GRB_RA:          191.4770d {+12h 45m 54.48s} (J2000),
                 191.6317d {+12h 46m 31.60s} (current),
                 190.8298d {+12h 43m 19.16s} (1950)
GRB_DEC:          -7.1657d {-07d 09' 56.5"} (J2000),
                  -7.2308d {-07d 13' 50.9"} (current),
                  -6.8926d {-06d 53' 33.1"} (1950)
GRB_ERROR:       2.4 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  15905 TJD;   344 DOY;   11/12/10
IMG_START_TIME:  52695.00 SOD {14:38:15.00} UT,   71.8 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       257.16d {+17h 08m 38s}  -22.91d {-22d 54' 43"}
SUN_DIST:         64.69 [deg]   Sun_angle= 4.4 [hr] (West of Sun)
MOON_POSTN:       77.39d {+05h 09m 34s}  +22.66d {+22d 39' 40"}
MOON_DIST:       115.11 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      300.50, 55.68 [deg] galactic lon,lat of the burst
ECL_COORDS:      193.35, -2.06 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.  
COMMENTS:        This is an Update Notice -- the RA,Dec values herein supersede the previous XRT_POS Notice.  
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:        This position was enhanced using UVOT field astrometry.  
COMMENTS:        The probability that this is a serendipitous source in the  
COMMENTS:        SPER window is 0.58% < P(seren) < 1.1%.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 10 Dec 11 14:55:14 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     509419,   Seg_Num: 0
POINT_RA:        191.478d {+12h 45m 55s} (J2000)
POINT_DEC:        -7.158d {-07d 09' 28"} (J2000)
POINT_ROLL:      111.978d
IMG_START_DATE:  15905 TJD;   344 DOY;   11/12/10
IMG_START_TIME:  53480.75 SOD {14:51:20.75} UT,   857.6 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        6.693
N_STARS:         48
X_OFFSET:        334 [pixels]
Y_OFFSET:        298 [pixels]
X_MAX:           1773 [pixels]
Y_MAX:           1737 [pixels]
DET_THRESH:      22
PHOTO_THRESH:    13
SL_URL:          sw00509419000msufc0857.fits
SUN_POSTN:       257.16d {+17h 08m 39s}  -22.91d {-22d 54' 44"}
SUN_DIST:         64.69 [deg]   Sun_angle= 4.4 [hr] (West of Sun)
MOON_POSTN:       77.43d {+05h 09m 43s}  +22.66d {+22d 39' 39"}
MOON_DIST:       115.07 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      300.50, 55.69 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      193.35, -2.05 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 10 Dec 11 14:55:21 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     509419,   Seg_Num: 0
POINT_RA:        191.478d {+12h 45m 55s} (J2000)
POINT_DEC:        -7.158d {-07d 09' 28"} (J2000)
POINT_ROLL:      111.978d
IMG_START_DATE:  15905 TJD;   344 DOY;   11/12/10
IMG_START_TIME:  53480.75 SOD {14:51:20.75} UT,   857.6 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        6.693
N_STARS:         48
X_OFFSET:        334 [pixels]
Y_OFFSET:        298 [pixels]
X_MAX:           1773 [pixels]
Y_MAX:           1737 [pixels]
DET_THRESH:      22
PHOTO_THRESH:    13
SL_URL:          sw00509419000msufc0857.fits
SUN_POSTN:       257.16d {+17h 08m 39s}  -22.91d {-22d 54' 44"}
SUN_DIST:         64.69 [deg]   Sun_angle= 4.4 [hr] (West of Sun)
MOON_POSTN:       77.43d {+05h 09m 44s}  +22.66d {+22d 39' 39"}
MOON_DIST:       115.07 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      300.50, 55.69 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      193.35, -2.05 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Source List.  
COMMENTS:        If you have elected to receive attachments:  
COMMENTS:        The uvot_catalog_srclist.fits.gz file does not exist; skipping the attachment.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 10 Dec 11 14:57:26 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     509419,   Seg_Num: 0
POINT_RA:        191.478d {+12h 45m 55s} (J2000)
POINT_DEC:        -7.158d {-07d 09' 28"} (J2000)
ROLL:            111.978d
IMG_START_DATE:  15905 TJD;   344 DOY;   11/12/10
IMG_START_TIME:  53480.75 SOD {14:51:20.75} UT,   857.6 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     345221488
X_OFFSET:        893 [pixels]
Y_OFFSET:        857 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1053
Y_GRB_POS:       1017
BINNING_INDEX:   1
IM_URL:          sw00509419000msuni0865.fits
SUN_POSTN:       257.17d {+17h 08m 40s}  -22.91d {-22d 54' 45"}
SUN_DIST:         64.70 [deg]   Sun_angle= 4.4 [hr] (West of Sun)
MOON_POSTN:       77.45d {+05h 09m 48s}  +22.66d {+22d 39' 39"}
MOON_DIST:       115.05 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      300.50, 55.69 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      193.35, -2.05 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Image.  
COMMENTS:        The GRB Position came from the Window Position in the Mode Command.  
COMMENTS:        The image has 2x2 binning (compression).

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 10 Dec 11 14:57:45 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     509419,   Seg_Num: 0
POINT_RA:        191.478d {+12h 45m 55s} (J2000)
POINT_DEC:        -7.158d {-07d 09' 28"} (J2000)
ROLL:            111.978d
IMG_START_DATE:  15905 TJD;   344 DOY;   11/12/10
IMG_START_TIME:  53480.75 SOD {14:51:20.75} UT,   857.6 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     345221488
X_OFFSET:        893 [pixels]
Y_OFFSET:        857 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1053
Y_GRB_POS:       1017
BINNING_INDEX:   1
IM_URL:          sw00509419000msuni0865.fits
SUN_POSTN:       257.17d {+17h 08m 40s}  -22.91d {-22d 54' 45"}
SUN_DIST:         64.70 [deg]   Sun_angle= 4.4 [hr] (West of Sun)
MOON_POSTN:       77.45d {+05h 09m 49s}  +22.66d {+22d 39' 39"}
MOON_DIST:       115.05 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      300.50, 55.69 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      193.35, -2.05 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Image.  
COMMENTS:        The GRB Position came from the Window Position in the Mode Command.  
COMMENTS:        The image has 2x2 binning (compression).  
COMMENTS:        If you have elected to receive attachments:  
COMMENTS:        The uvot_catalog_image.fits.gz file does not exist; skipping the attachment.

GCN Circular #12651
M. Stamatikos (OSU), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), J. R. Cummings (GSFC/UMBC), N. Gehrels (GSFC), H. A. Krimm (GSFC/USRA), C. B. Markwardt (GSFC), D. M. Palmer (LANL), T. Sakamoto (GSFC/UMBC), M. H. Siegel (PSU), J. Tueller (GSFC), T. N. Ukwatta (MSU) (i.e. the Swift-BAT team):
Using the data set from T-61 to T+178 sec from the recent telemetry downlink, we report further analysis of BAT GRB 111210A (trigger #509419) (Siegel, et al., GCN Circ. 12650). The BAT ground-calculated position is RA, Dec = 191.493, -7.173 deg, which is
```
   RA(J2000)  =  12h 45m 58.3s 
   Dec(J2000) = -07d 10' 21.8" 
```
with an uncertainty of 1.7 arcmin, (radius, sys+stat, 90% containment). The partial coding was 100%.
The mask-weighted light curve shows two peaks; the first starting at ~T-2.3 sec and ending at ~T-1.6 sec, and the second starting at ~T-0.2 sec, peaking at ~T+0.1 sec, and ending at ~T+0.4 sec. T90 (15-350 keV) is 2.52 +- 0.13 sec (estimated error including systematics).
The time-averaged spectrum from T-2.33 to T+0.36 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.30 +- 0.19. The fluence in the 15-150 keV band is 1.6 +- 0.2 x 10^-7 erg/cm2. The 1-sec peak photon flux measured from T-2.33 sec in the 15-150 keV band is 1.0 +- 0.1 ph/cm2/sec. 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/509419/BA/
GCN Circular #12652
M.R. Goad, J.P. Osborne, A.P. Beardmore and P.A. Evans (U. Leicester) report on behalf of the Swift-XRT team.
Using 1316 s of XRT Photon Counting mode data and 1 UVOT images for GRB 111210A, we find an astrometrically corrected X-ray position (using the XRT-UVOT alignment and matching UVOT field sources to the USNO-B1 catalogue): RA, Dec = 191.47684, -7.16593 which is equivalent to:
```
RA (J2000): 12h 45m 54.44s
Dec (J2000): -07d 09' 57.4"
```
with an uncertainty of 2.1 arcsec (radius, 90% confidence).
This position may be improved as more data are received. The latest position can be viewed at http://www.swift.ac.uk/xrt_positions. Position enhancement is described by Goad et al. (2007, A&A, 476, 1401) and Evans et al. (2009, MNRAS, 397, 1177).
This circular was automatically generated, and is an official product of the Swift-XRT team.
GCN Circular #12653
S. D. Barthelmy (GSFC), J. Norris (BSU) for the BAT Team:
We report the spectral lag analysis for GRB 111210A (GCN Circ. 12632 & 12640) based on the BAT data. Using 16-ms binned light curves, the spectral lag for the 15-25 keV to 50-100 keV bands is 38 +26/-33 msec, and 36 +16/-18 msec for the 25-50 keV to 100-350 keV bands for both peaks combined. For just the second peak, the lag for 15-25 keV to 50-100 keV bands is 97 +52/-40 msec. These lag values place this burst in the long burst category.
GCN Circular #12654
M. H. Siegel (PSU) reports on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 111210A 65 s after the BAT trigger (Siegel et al., GCN Circ. 12650). No optical afterglow consistent with the XRT position (Goad et al., GCN Circ. 12652) 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 first finding chart (FC) exposure and subsequent exposures are:
```
Filter         T_start(s)   T_stop(s)      Exp(s)         Mag

white (FC)          65          214          147         >20.3
u (FC)             276          526          246         >19.5
white               65         6160          569         >20.5
v                  606         6570          471         >19.3
b                  532         7315          397         >20.0
u                  276         7185          659         >19.9
uvw1               657         6980          471         >20.1
uvm2              1062         1082           19         >18.1
uvw2               582         6365          216         >20.5
```
The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.03 in the direction of the burst (Schlegel et al. 1998).
GCN Circular #12655
Kenshi Yanagisawa, Daisuke Kuroda, Yasuhiro Shimizu, Kiichi Okita (OAO/NAOJ), Michitoshi Yoshida (Hiroshima-U), Kouji Ohta(Kyoto-U), and Nobuyuki Kawai(Tokyo Tech.) report on behalf of the MITSuME collaboration:
We observed the field of GRB111210A (Siegel et al, GCN12650, Stamatikos et al, GCN12651) in J-band with a wide-field NIR camera at Okayama Astrophysical Observatory (Japan). The camera has an effective aperture of 0.91m.
Observations started from 17:59 UT on 10th December, 3.37 hours after the BAT trigger, to 19:35 UT. The total exposure of 73 min was successfully obtained.
In our co-add image, we did not find any new point source within the enhanced XRT error circle (Goad et al., GCNC 12652) down to limiting magnitude of J=16.0 (Vega, S/N=10). The photometric calibration was made against 2MASS field stars.
```
T0+[s]      MID-UT     T-EXP[sec]      J
---------------------------------------------------
 +15,000   18:47          4,380       >16.0(S/N=10)
---------------------------------------------------
T0+ : Elapsed time after the burst [sec]
T-EXP: Total Exposure time [sec]
```
GCN Circular #12657
N. R. Tanvir (U. Leicester) and A. J. Levan (U. Warwick) report on behalf of a larger collaboration:
We obtained short exposures of the field of GRB 111210A (Siegel et al. GCN 12650) with Gemini-North using the GMOS instrument, beginning at 2011-Dec-10 15:16UT, approximately 39 minutes post-burst.=C2= =A0 Within the refined XRT position (Goad et al. GCN12652) we find a faint source which is visible in both z and r filters.=C2=A0 Calibrated against= nearby USNO stars we find a magnitude of r~23, with an estimated error of +/-0.2 random and +/-0.3 calibration.
Our astrometry gives a position (conservative uncertainty of 0.5 arcsec) = of:
```
RA(2000)= 12 45 54.40
dec(2000)= -07 09 57.4
```
We thank the Gemini staff, particularly Kristin Chiboucas and Rachel Mason, for assistance with these observations.
GCN Circular #12659
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 111123A (Siegel et al., GCNC 12650) 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 2011-12-10 17:54:08 UT (~3.3 h after the burst). We did not find any new point source within the enhanced XRT circle (Goad, et al., GCNC 12652) in all the three bands.
Three sigma upper limits of the OT are listed below. We used SDSS catalog for flux calibration.
```
T0+[day]   MID-UT   T-EXP[sec]    g'     Rc     Ic
------------------------------------------------------
0.17952    18:55:34    5640.0    >18.9  >19.3  >18.9
------------------------------------------------------
T0+ : Elapsed time after the burst [day]
T-EXP: Total Exposure time [sec]
```
GCN Circular #12660
D.N. Burrows (PSU), C. Pagani (U. Leicester), A.P. Beardmore (U. Leicester), P.A. Evans (U. Leicester), V. Mangano (INAF-IASFPA), A. Melandri (INAF-OAB), B. Sbarufatti (INAF-OAB/PSU), J.A. Kennea (PSU), M.C. Stroh (PSU) and M.H. Siegel report on behalf of the Swift-XRT team:
We have analysed 6.8 ks of XRT data for GRB 111210A (Siegel et al. GCN Circ. 12650), from 69 s to 30.5 ks after the BAT trigger. The data are entirely in Photon Counting (PC) mode. The enhanced XRT position for this burst was given by Goad et al. (GCN. Circ 12652).
The light curve can be modelled with a power-law decay with a decay index of alpha=3.7 (+/-0.4).
A spectrum formed from the PC mode data can be fitted with an absorbed power-law with a photon spectral index of 1.6 (+0.6, -0.3). The best-fitting absorption column is consistent with the Galactic value of 1.9 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 4.7 x 10^-11 (4.9 x 10^-11) erg cm^-2 count^-1.
A summary of the PC-mode spectrum is thus:
```
Total column:	     0 (+1.1, -0) x 10^21 cm^-2
Galactic foreground: 1.9 x 10^20 cm^-2
Excess significance: <1.6 sigma
Photon index:	     1.6 (+0.6, -0.3)
```
The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00509419.
This circular is an official product of the Swift-XRT team.
GCN Circular #12661
N. R. Tanvir (U. Leicester) and D. Malesani (DARK) report:
We have analysed images of the field of GRB 111210A available in SDSS DR8. The source detected in the Gemini imaging (Tanvir et al. GCN 12657) is also visible at low S/N in the gri and z filter images. Our photometry gives magnitudes g=23.9, r=23.0, i=22.9 and z=23.0, with errors around 0.3 mag in each case. Since these are consistent with the Gemini magnitudes, this suggests that the source is a candidate host galaxy, with little if any afterglow contributing to the Gemini images. The detection in the g-band, and indeed its brightness, mean this source is likely to be at redshift z<4.
GCN Circular #12662
D. A. Kann, S. Klose (TLS Tautenburg), and J. Greiner, (MPE Garching) report on behalf of the GROND team:
We observed the field of the Swift GRB 111210A (Swift trigger 509419; Siegel et al., GCN #12650) simultaneously in g'r'i'z'JHK with GROND (Greiner et al. 2008, PASP, 120, 405) mounted at the 2.2 m ESO/MPG telescope at La Silla Observatory (Chile). Observations started on December 11, 2011, at 08:06 UT, 0.73 days after the GRB trigger, during morning twilight and were partially performed only in the NIR. They were taken at an average seeing of 1".1 and at an airmass of 2 to 1.5.
At the position of the X-ray afterglow (Goad et al., GCN #12652) as well as the optical candidate (Tanvir et al., GCN #12657), we tentatively detect a source in the redder filters.
Based on co-added images of 743 s integration time in g'r'i'z' (centered 0.7396 days after the trigger) and 2160 s in JHK (centered 0.7520 days after the trigger), the following magnitudes and limits (3 sigma, AB magnitude system) have been derived:
```
g' > 22.6,
r' > 23.2,
i' = 22.8 +/- 0.4,
z' = 22.4 +/- 0.3,
J =  21.4 +/ 0.3,
H =  21.4 +/- 0.4,
K >  20.5.
```
Our r'-band upper limit is not deep enough to check fading against the Gemini North candidate. If the faint detections actually represents a real object, this is likely the host galaxy of this GRB (Tanvir & Malesani, GCN 12661).
Magnitudes were calibrated against the SDSS catalog in g'r'i'z' and 2MASS field stars in JHK.
GCN Circular #12665
L.P. Xin, J.Y. Wei, Y. L. Qiu, J. Wang, J.S. Deng, C. Wu, X. H. Han on behalf of EAFON report:
We began to observe GRB 111210A (Siegel et al., GCN 12650) with Xinglong TNT telescope at 21:16:27 (UT), about 6.67 h after the burst. 14 R-band images were obtained. No new source was detected in the combined R band image within the errorbox of XRT position. The upper limit was estimated to be about 19.5 mag derived from USNO B1.0 R2 mag.
This message may be cited.
For more information about Xinglong GRBs Follow-up observations, please visit the website: http://www.xinglong-naoc.org:8080/grb/index.html"
GCN Circular #12713
A.Volnova (SAI MSU), M. Andreev, A. Sergeev (Terskol Branch of INASAN), V. Petkov (Baksan Neutrino Observatory of INR), N. Karpov, O. Andrienko, K. Martynyuk-Lototsky, N. Parakhin, N. Borachok, V. Kozlov, G. Butenko, V. Godunova (IC AMER, NASU), A. Pozanenko (IKI) report:
We observed the field of GRB 111210A (Siegel et al., GCN 12650) with Zeiss-600 telescope of Mt.Terskol observatory on Dec 11 between 01:06:25 and 03:09:45 UT under poor weather condition and mean seeing of about 2.2". We took 120 frames in R-band with exposure of 60 seconds. In a stacked frame we did not detect any source within the enhanced XRT error circle (Goad et al., GCN 12652). The photometry of the field is based on a few stars from USNO-B1.0 catalogue.
```
t-t0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 filter =A0 exp. =A0 =A0 =A0 =A0OT =A0 =A0=
uplim (3sigma)
(mid., days) =A0 =A0 =A0 =A0 =A0 =A0(s)

0.48006 =A0 =A0 =A0 =A0 R =A0 =A0 =A0120x60 =A0 =A0n/d =A0 =A0 18.6
```
GCN Report 352.1
GCN_Report 352.1 has been posted: http://gcn.gsfc.nasa.gov/reports/report_352_1.pdf by M.H. Siegel at PSU titled: "Final Swift Observations of GRB 111210A"

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Jochen Greiner, last update: 22-Dec-2011 [Disclaimer]