Gamma-ray Burst 111029A

(All information courtesy of the instrument teams.)

Previous IAU Circulars

• none

• GCN/BACODINE POSITION NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Sat 29 Oct 11 09:46:30 UT
  NOTICE_TYPE:     Swift-BAT GRB Position
  TRIGGER_NUM:     506519,   Seg_Num: 0
  GRB_RA:           44.691d {+02h 58m 46s} (J2000),
                    44.914d {+02h 59m 39s} (current),
                    43.751d {+02h 55m 00s} (1950)
  GRB_DEC:         +57.085d {+57d 05' 07"} (J2000),
                   +57.132d {+57d 07' 55"} (current),
                   +56.886d {+56d 53' 09"} (1950)
  GRB_ERROR:       3.00 [arcmin radius, statistical only]
  GRB_INTEN:       0 [cnts]    Image_Peak=1971 [image_cnts]
  TRIGGER_DUR:     96.000 [sec] 
  TRIGGER_INDEX:   20000     E_range: 15-50 keV
  BKG_INTEN:       0 [cnts]
  BKG_TIME:        0.00 SOD {00:00:00.00} UT
  BKG_DUR:         0 [sec]
  GRB_DATE:        15863 TJD;   302 DOY;   11/10/29
  GRB_TIME:        35080.48 SOD {09:44:40.48} UT
  GRB_PHI:          95.95 [deg]
  GRB_THETA:        16.81 [deg]
  SOLN_STATUS:     0x13
  RATE_SIGNIF:     0.00 [sigma]
  IMAGE_SIGNIF:    8.71 [sigma]
  MERIT_PARAMS:     +1  +0  +0  +7  +1  -1  +0  +1 +71  +0 
  SUN_POSTN:       213.32d {+14h 13m 16s}  -13.39d {-13d 23' 37"}
  SUN_DIST:        135.38 [deg]   Sun_angle= 11.2 [hr] (West of Sun)
  MOON_POSTN:      249.83d {+16h 39m 20s}  -22.55d {-22d 33' 03"}
  MOON_DIST:       140.96 [deg]
  MOON_ILLUM:      9 [%]
  GAL_COORDS:      139.59, -1.61 [deg] galactic lon,lat of the burst (or transient)
  ECL_COORDS:       60.56, 38.18 [deg] ecliptic lon,lat of the burst (or transient)
  COMMENTS:        SWIFT-BAT GRB Coordinates.  
  COMMENTS:        This is an image trigger.  (The RATE_SIGNIF & BKG_{INTEN, TIME, DUR} are undefined.)  
  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 = 317.18,17.89 [deg].  
  

• red DSS finding chart ps-file
  
  
• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Sat 29 Oct 11 09:47:48 UT
  NOTICE_TYPE:     Swift-XRT Nack-Position
  TRIGGER_NUM:     506519,   Seg_Num: 0
  POINT_RA:         44.699d {+02h 58m 48s} (J2000)
  POINT_DEC:       +57.099d {+57d 05' 58"} (J2000)
  IMG_START_DATE:  15863 TJD;   302 DOY;   11/10/29
  IMG_START_TIME:  35240.59 SOD {09:47:20.59} UT,   160.1 [sec] since BAT Trigger Time
  COUNTS:          1    Min_needed= 20
  STD_DEV:         0.00   Max_StdDev_for_Good=28.44 [arcsec]
  PH2_ITER:        0    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 29 Oct 11 09:49:14 UT
  NOTICE_TYPE:     Swift-BAT GRB Lightcurve
  TRIGGER_NUM:     506519,   Seg_Num: 0
  GRB_RA:           44.691d {+02h 58m 46s} (J2000),
                    44.914d {+02h 59m 39s} (current),
                    43.751d {+02h 55m 00s} (1950)
  GRB_DEC:         +57.085d {+57d 05' 07"} (J2000),
                   +57.132d {+57d 07' 55"} (current),
                   +56.886d {+56d 53' 09"} (1950)
  GRB_DATE:        15863 TJD;   302 DOY;   11/10/29
  GRB_TIME:        35080.48 SOD {09:44:40.48} UT
  TRIGGER_INDEX:   20000
  GRB_PHI:          95.95 [deg]
  GRB_THETA:        16.81 [deg]
  DELTA_TIME:      0.00 [sec]
  TRIGGER_DUR:     96.000 [sec] 
  SOLN_STATUS:     0x13
  RATE_SIGNIF:     0.00 [sigma]
  IMAGE_SIGNIF:    8.71 [sigma]
  LC_URL:          sw00506519000msb.lc
  SUN_POSTN:       213.32d {+14h 13m 16s}  -13.39d {-13d 23' 39"}
  SUN_DIST:        135.38 [deg]   Sun_angle= 11.2 [hr] (West of Sun)
  MOON_POSTN:      249.86d {+16h 39m 27s}  -22.55d {-22d 33' 08"}
  MOON_DIST:       140.95 [deg]
  MOON_ILLUM:      9 [%]
  GAL_COORDS:      139.59, -1.61 [deg] galactic lon,lat of the burst (or transient)
  ECL_COORDS:       60.56, 38.18 [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 an image 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 = 317.18,17.89 [deg].  
  

  
• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Sat 29 Oct 11 09:49:45 UT
  NOTICE_TYPE:     Swift-UVOT Source List
  TRIGGER_NUM:     506519,   Seg_Num: 0
  POINT_RA:         44.699d {+02h 58m 48s} (J2000)
  POINT_DEC:       +57.099d {+57d 05' 58"} (J2000)
  POINT_ROLL:      15.879d
  IMG_START_DATE:  15863 TJD;   302 DOY;   11/10/29
  IMG_START_TIME:  35244.09 SOD {09:47:24.09} UT,   163.6 [sec] since BAT Trigger Time
  FILTER:          10, White
  BKG_MEAN:        2.781
  N_STARS:         49
  X_OFFSET:        366 [pixels]
  Y_OFFSET:        612 [pixels]
  X_MAX:           1325 [pixels]
  Y_MAX:           1571 [pixels]
  DET_THRESH:      14
  PHOTO_THRESH:    7
  SL_URL:          sw00506519000msufc0163.fits
  SUN_POSTN:       213.32d {+14h 13m 17s}  -13.39d {-13d 23' 39"}
  SUN_DIST:        135.36 [deg]   Sun_angle= 11.2 [hr] (West of Sun)
  MOON_POSTN:      249.87d {+16h 39m 29s}  -22.55d {-22d 33' 09"}
  MOON_DIST:       140.94 [deg]
  MOON_ILLUM:      9 [%]
  GAL_COORDS:      139.59, -1.59 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:       60.57, 38.20 [deg] ecliptic lon,lat of the pointing direction
  COMMENTS:        SWIFT-UVOT Source List.  
  

• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Sat 29 Oct 11 09:50:15 UT
  NOTICE_TYPE:     Swift-UVOT Processed Source List
  TRIGGER_NUM:     506519,   Seg_Num: 0
  POINT_RA:         44.699d {+02h 58m 48s} (J2000)
  POINT_DEC:       +57.099d {+57d 05' 58"} (J2000)
  POINT_ROLL:      15.879d
  IMG_START_DATE:  15863 TJD;   302 DOY;   11/10/29
  IMG_START_TIME:  35244.09 SOD {09:47:24.09} UT,   163.6 [sec] since BAT Trigger Time
  FILTER:          10, White
  BKG_MEAN:        2.781
  N_STARS:         49
  X_OFFSET:        366 [pixels]
  Y_OFFSET:        612 [pixels]
  X_MAX:           1325 [pixels]
  Y_MAX:           1571 [pixels]
  DET_THRESH:      14
  PHOTO_THRESH:    7
  SL_URL:          sw00506519000msufc0163.fits
  SUN_POSTN:       213.32d {+14h 13m 17s}  -13.39d {-13d 23' 40"}
  SUN_DIST:        135.36 [deg]   Sun_angle= 11.2 [hr] (West of Sun)
  MOON_POSTN:      249.87d {+16h 39m 30s}  -22.55d {-22d 33' 10"}
  MOON_DIST:       140.94 [deg]
  MOON_ILLUM:      9 [%]
  GAL_COORDS:      139.59, -1.59 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:       60.57, 38.20 [deg] ecliptic lon,lat of the pointing direction
  COMMENTS:        SWIFT-UVOT Processed Source List.  
  COMMENTS:        All 4 attachments are included.  
  

  
• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Sat 29 Oct 11 09:51:09 UT
  NOTICE_TYPE:     Swift-UVOT Image
  TRIGGER_NUM:     506519,   Seg_Num: 0
  POINT_RA:         44.699d {+02h 58m 48s} (J2000)
  POINT_DEC:       +57.099d {+57d 05' 58"} (J2000)
  ROLL:            15.879d
  IMG_START_DATE:  15863 TJD;   302 DOY;   11/10/29
  IMG_START_TIME:  35244.09 SOD {09:47:24.09} UT,   163.6 [sec] since BAT Trigger Time
  FILTER:          10, White
  EXPOSURE_ID:     341574451
  X_OFFSET:        685 [pixels]
  Y_OFFSET:        931 [pixels]
  WIDTH:           160 [pixels]
  HEIGHT:          160 [pixels]
  X_GRB_POS:       845
  Y_GRB_POS:       1091
  BINNING_INDEX:   1
  IM_URL:          sw00506519000msuni0171.fits
  SUN_POSTN:       213.32d {+14h 13m 17s}  -13.39d {-13d 23' 41"}
  SUN_DIST:        135.36 [deg]   Sun_angle= 11.2 [hr] (West of Sun)
  MOON_POSTN:      249.88d {+16h 39m 32s}  -22.55d {-22d 33' 12"}
  MOON_DIST:       140.93 [deg]
  MOON_ILLUM:      9 [%]
  GAL_COORDS:      139.59, -1.59 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:       60.57, 38.20 [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 29 Oct 11 09:51:23 UT
  NOTICE_TYPE:     Swift-UVOT Processed Image
  TRIGGER_NUM:     506519,   Seg_Num: 0
  POINT_RA:         44.699d {+02h 58m 48s} (J2000)
  POINT_DEC:       +57.099d {+57d 05' 58"} (J2000)
  ROLL:            15.879d
  IMG_START_DATE:  15863 TJD;   302 DOY;   11/10/29
  IMG_START_TIME:  35244.09 SOD {09:47:24.09} UT,   163.6 [sec] since BAT Trigger Time
  FILTER:          10, White
  EXPOSURE_ID:     341574451
  X_OFFSET:        685 [pixels]
  Y_OFFSET:        931 [pixels]
  WIDTH:           160 [pixels]
  HEIGHT:          160 [pixels]
  X_GRB_POS:       845
  Y_GRB_POS:       1091
  BINNING_INDEX:   1
  IM_URL:          sw00506519000msuni0171.fits
  SUN_POSTN:       213.32d {+14h 13m 17s}  -13.39d {-13d 23' 41"}
  SUN_DIST:        135.36 [deg]   Sun_angle= 11.2 [hr] (West of Sun)
  MOON_POSTN:      249.89d {+16h 39m 33s}  -22.55d {-22d 33' 12"}
  MOON_DIST:       140.93 [deg]
  MOON_ILLUM:      9 [%]
  GAL_COORDS:      139.59, -1.59 [deg] galactic lon,lat of the pointing direction
  ECL_COORDS:       60.57, 38.20 [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:        All 4 attachments are included.  
  

  
• GCN NOTICE
  

  TITLE:           GCN/SWIFT NOTICE
  NOTICE_DATE:     Sat 29 Oct 11 09:51:53 UT
  NOTICE_TYPE:     Swift-XRT Position
  TRIGGER_NUM:     506519,   Seg_Num: 0
  GRB_RA:           44.7826d {+02h 59m 07.82s} (J2000),
                    45.0060d {+03h 00m 01.44s} (current),
                    43.8425d {+02h 55m 22.19s} (1950)
  GRB_DEC:         +57.1102d {+57d 06' 36.7"} (J2000),
                   +57.1568d {+57d 09' 24.6"} (current),
                   +56.9110d {+56d 54' 39.5"} (1950)
  GRB_ERROR:       4.4 [arcsec radius, statistical plus systematic, 90% containment]
  GRB_INTEN:       1.00e-10 [erg/cm2/sec]
  GRB_SIGNIF:      10.00 [sigma]
  IMG_START_DATE:  15863 TJD;   302 DOY;   11/10/29
  IMG_START_TIME:  35259.00 SOD {09:47:39.00} UT,   178.5 [sec] since BAT Trigger Time
  TAM[0-3]:        100.00 100.00 100.00 100.00
  AMPLIFIER:       1
  WAVEFORM:        31
  SUN_POSTN:       213.32d {+14h 13m 17s}  -13.40d {-13d 23' 41"}
  SUN_DIST:        135.34 [deg]   Sun_angle= 11.2 [hr] (West of Sun)
  MOON_POSTN:      249.89d {+16h 39m 34s}  -22.55d {-22d 33' 13"}
  MOON_DIST:       140.95 [deg]
  MOON_ILLUM:      9 [%]
  GAL_COORDS:      139.63, -1.56 [deg] galactic lon,lat of the burst
  ECL_COORDS:       60.63, 38.19 [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 0.11% < P(seren) < 0.58%.  
  

• GCN Circular #12498
  E. Troja (NASA/GSFC/ORAU), S. Campana (INAF-OAB), P. A. Evans (U Leicester), C. Guidorzi (U Ferrara), E. A. Hoversten (PSU), V. Mangano (INAF-IASFPA), C. J. Mountford (U Leicester), P. T. O'Brien (U Leicester), K. L. Page (U Leicester) and D. M. Palmer (LANL) report on behalf of the Swift Team:
  At 09:44:40 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 111029A (trigger=506519). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 44.691, +57.085 which is

     RA(J2000) = 02h 58m 46s
     Dec(J2000) = +57d 05' 07"
  

  with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed a complex structure with a duration of at least 20 sec from T+20 to T+40. The peak count rate was ~1500 counts/sec (15-350 keV), at ~23 sec after the trigger.
  The XRT began observing the field at 09:47:39.0 UT, 178.5 seconds after the BAT trigger. Using promptly downlinked data we find an uncatalogued X-ray source located at RA, Dec 44.78260, 57.11024 which is equivalent to:

     RA(J2000)  = 02h 59m 7.82s
     Dec(J2000) = +57d 06' 36.9"
  

  with an uncertainty of 4.4 arcseconds (radius, 90% containment). This location is 200 arcseconds from the BAT onboard position. 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. As this position is significantly outside the BAT error circle, it is probably unrelated to the trigger.
  A power-law fit to a spectrum formed from promptly downlinked event data gives a column density consistent with the Galactic value of 6.27 x 10^21 cm^-2 (Kalberla et al. 2005).
  UVOT took a finding chart exposure of 71 seconds with the White filter starting 163 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 none of the XRT error circle. 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 large, but uncertain extinction expected.
  Burst Advocate for this burst is E. Troja (eleonora.troja AT nasa.gov). 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 #12499
  W. Rujopakarn (Steward), B. E. Schaefer (Louisiana State), T. Guver (U Arizona), report on behalf of the ROTSE collaboration:
  ROTSE-IIIb, located at McDonald Observatory, Texas, responded to GRB 111029A (Swift trigger 506519; Troja, GCN 12498), producing images beginning 7.7 s after the GCN notice time. An automated response took the first image at 09:46:34.7 UT, 114.2 s after the burst, under excellent conditions. We took 10 5-sec, 10 20-sec and 20 60-sec exposures. These unfiltered images are calibrated relative to USNO A2.0 (R). Imaging is on going.
  Comparison to the DSS (second epoch) reveals no new sources within the 3-sigma Swift/BAT error circle or the XRT error circle, for both single images and coadding into sets of 10; the field is not crowded. Individual images have limiting magnitudes ranging from 16.9-17.6; we set the following specific limits.

  start UT       end UT      t_exp(s)   mlim   t_start-tGRB(s)  Coadd?
  --------------------------------------------------------------------
  09:46:34.7   09:46:39.7         5     17.2          114.2       N
  09:46:34.7   09:48:21.8       107     18.0          114.2       Y
  

• GCN Circular #12500
  L. Elenin (ISON), A. Pozanenko (IKI), I. Molotov (KIAM) report on behalf of larger GRB follow-up collaboration:
  We observed the field of GRB 111029A (Swift trigger 506519; Troja et al., GCN 12498) with 0.45-m telescope =CFf ISON-NM observatory starting in automatic response mode on Oct. 29 (UT) 09:47:47, i.e. 187 s after burst trigger. We took 31 unfiltered images. We do not detect any source within XRT error circle. The photometry of a single and co-added frames is based on the USNO-B1.0 nearby stars (R magnitudes):

  T_start,   T0+,       Exposure, OT,  Upper Limit (3sigma)
  (UT)        (mid, s)   (s)
  
  09:47:47    216.5        60        n/d    18.3
  09:47:47   1101.5      15x60       n/d    19.5
  09:47:47   1385.0      31x60       n/d    20.3
  

• GCN Circular #12501
  C. Guidorzi (U. Ferrara) reports on behalf of a large collaboration:
  The 2-m Faulkes Telescope North robotically followed up Swift GRB 111029A (Troja et al. GCN Circ. 12498) from 09:49:03 UT, corresponding to 263 s after the BAT trigger time. Within the XRT error circle we do not find any source in the R and i' filters down to the following magnitudes:

  Mid time from  Total Exp   Filter    Magnitude
  trigger (s)    (s)
  -------------------------------------------------
    908            120         R > 21.8
  1118            100         i' > 20.5
  -------------------------------------------------
  

  Magnitudes have been calibrated from R2 and I nominal values of nearby USNOB1.0 stars.
• GCN Circular #12502
  P.A. Evans, M.R. Goad, J.P. Osborne and A.P. Beardmore (U. Leicester) report on behalf of the Swift-XRT team.
  Using 57 s of XRT Photon Counting mode data and 1 UVOT images for GRB 111029A, 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 = 44.78376, +57.11122 which is equivalent to:

  RA (J2000): 02h 59m 8.10s
  Dec (J2000): +57d 06' 40.4"
  

  with an uncertainty of 2.5 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 #12503
  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 110929A (Troja al., GCN 12498) with Xinglong TNT telescope at 10:35:49 (UT), about 51 min after the burst. 15 R-band images were obtained under a bad seeing. 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 19.6 mag derived from USNO B1.0 R2mag.
  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 #12504
  D. M. Palmer (LANL), 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), T. Sakamoto (GSFC/UMBC), M. Stamatikos (OSU), E. Troja (NASA/GSFC/ORAU), T. N. Ukwatta (MSU) (i.e. the Swift-BAT team):
  Using the data set from T-60 to T+243 sec from recent telemetry downlinks, we report further analysis of BAT GRB 111029A (trigger #506519) (Troja, et al., GCN Circ. 12498). The BAT ground-calculated position is RA, Dec = 44.785, 57.101 deg, which is

     RA(J2000)  =  02h 59m 08.4s 
     Dec(J2000) = +57d 06' 02.9" 
  

  with an uncertainty of 1.2 arcmin, (radius, sys+stat, 90% containment). The partial coding was 75%.
  The mask-weighted light curve shows 2 or 3 overlapping peaks starting at ~T+15 and ending at ~T=35 sec. T90 (15-350 keV) is 7.6 +- 1.1 sec (estimated error including systematics).
  The time-averaged spectrum from T+19.60 to T+28.92 sec is best fit by a power law with an exponential cutoff. This fit gives a photon index 0.77 +- 0.71, and Epeak of 36.2 +- 5.7 keV (chi squared 39.5 for 56 d.o.f.). For this model the total fluence in the 15-150 keV band is 3.9 +- 0.4 x 10^-7 erg/cm2 and the 1-sec peak flux measured from T+23.62 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 2.11 +- 0.13 (chi squared 53.6 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/506519/BA/
• GCN Circular #12505
  W. Li and A. V. Filippenko, University of California at Berkeley, on behalf of the KAIT GRB team, report:
  The robotic 0.8-m KAIT located at Lick Observatory responded to GRB 111029A (Swift trigger 506519; Troja et al. GCN 12498) automatically and started the first image at 09:47:15 UT (154.5 seconds after the burst). A series of images were taken in the V, I, and clear filters. No new sources were detected within the Swift/XRT error circle in the KAIT images (single or stacked frames) when compared to the DSS II. We set the following specific limits (calibrated to USNO B1):

  start UT       end UT      t_exp(s)   mlim (unfilt.)  coadd?
  ---------------------------------------------------------------
  09:47:15.0   09:47:17.0        2      18.0            N 
  09:47:15.0   09:47:46.0       20      19.0            Y (2s x 10) 
  

• GCN Circular #12506
  E. A. Hoversten (PSU) and E. Troja (NASA/GSFC/ORAU) report on behalf of the Swift/UVOT team:
  The Swift/UVOT began settled observations of the field of GRB 111029A 164 s after the BAT trigger (Troja et al., GCN Circ. 12498). No optical afterglow consistent with the XRT position (Evans et al., GCN Circ. 12502) is detected in the initial UVOT exposures. Preliminary 3-sigma upper limits using the UVOT photometric system (Poole et al. 2008, MNRAS, 383, 627) for the initial exposures are:

  Filter         T_start(s)   T_stop(s)      Exp(s)         Mag
  
  white (FC)         164          235           70         >20.5
  white              164         5606          463         >21.6
  v                 4381         6010          387         >19.6
  b                 3765         5401          393         >21.0
  u                 3560         5196          393         >20.9
  w1                4791         4991          197         >20.0
  m2                4586         4786          197         >20.6
  w2                4177         5812          393         >21.0
  

  The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 1.55 in the direction of the burst (Schlegel et al. 1998).
• GCN Circular #12508
  A. N. Morgan (UC Berkeley) reports:
  We observed the field of GRB 111029A (Troja et al., GCN 12498) with the 1.3m PAIRITEL located at Mt. Hopkins, Arizona. Observations began at 2011-10-29 09h47m33 UT, ~2.9 minutes after the Swift Trigger. In mosaics taken simultaneously in the J, H, and Ks filters, we do not detect any source within the enhanced XRT error circle (Evans et al., GCN 12502) in the coaddition of the first few minutes of data nor the first hour.
  The preliminary photometry yields:

  post burst
  t_mid(s) exp.(s) filt  U. Limit (3 sig)
  551      351     J     > 17.9
  551      351     H     > 16.6
  551      351     Ks    > 15.7
  1837.5   1919    J     > 18.5
  1837.5   1919    H     > 17.5
  1837.5   1919    Ks    > 16.6
  

  All magnitudes are given in the Vega system, calibrated to 2MASS. No correction for Galactic extinction has been made to the above reported values.
• GCN Circular #12509
  O. M. Littlejohns (U. Leicester) and E. Troja (NASA/GSFC/ORAU) report on behalf of the Swift-XRT team:
  We have analysed 19 ks of XRT data for GRB 111029A (Troja et al. GCN Circ. 12498), from 163 s to 58.0 ks after the BAT trigger. The data comprise 25 s in Windowed Timing (WT) mode with the remainder in Photon Counting (PC) mode. The enhanced XRT position for this burst was given by Evans et al. (GCN. Circ 12502).
  The light curve can be modelled with a power-law decay with a decay index of alpha=1.06 (+0.07, -0.08).
  A spectrum formed from the PC mode data can be fitted with an absorbed power-law with a photon spectral index of 2.6 (+0.7, -0.5). The best-fitting absorption column is 1.5 (+0.6, -0.3) x 10^22 cm^-2, in excess of the Galactic value of 6.3 x 10^21 cm^-2 (Kalberla et al. 2005). The counts to observed (unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 5.0 x 10^-11 (2.1 x 10^-10) erg cm^-2 count^-1.
  A summary of the PC-mode spectrum is thus:

  Total column:	     1.5 (+0.6, -0.3) x 10^22 cm^-2
  Galactic foreground: 6.3 x 10^21 cm^-2
  Excess significance: 3.9 sigma
  Photon index:	     2.6 (+0.7, -0.5)
  

  The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00506519.
  This circular is an official product of the Swift-XRT team.
• GCN Circular #12510
  L.P. Xin, J.Y. Wei, Y. L. Qiu, J. Wang, J.S. Deng, C. Wu, X. H. Han on behalf of EAFON report:
  The burst given in GCN 12503 should be GRB111029A, but not GRB 110929A. We apologize for this typo.
  "We began to observe GRB 111029A (Troja al., GCN 12498) with Xinglong TNT telescope at 10:35:49 (UT), about 51 min after the burst. 15 R-band images were obtained under a bad seeing. 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 19.6 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 #12511
  D. Kuroda (OAO, NAOJ), H. Hanayama, T. Miyaji, J. Watanabe (IAO, NAOJ), K. Yanagisawa (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 111029A (Troja et al., GCNC 12498) with the optical three color (g', Rc and Ic) CCD camera attached to the Murikabushi 1m telescope of Ishigakijima Astronomical Observatory.
  The observation started on 2011-10-29 15:49:45 UT, (~6.1 h after the burst). We did not find any new point source within the enhanced XRT error circle (Evans et al., GCNC 12502) in all the three bands.
  Photometric results of the OT are listed below. We used GSC2.3 catalog for flux calibration.

  #T0+[day]  MID-UT    T-EXP[sec]   g'     Rc    Ic
  -----------------------------------------------------
  0.30785    17:07:59   13140.0   >22.6  >22.0  >20.7
  -----------------------------------------------------
  T0+ : Elapsed time after the burst [day]
  T-EXP: Total Exposure time [sec]
  

• GCN Circular #12514
  Adria C. Updike (Dickinson College), Dieter H. Hartmann (Clemson University), Peter A. Milne (Steward Observatory), and G. Grant Williams (MMT Observatory) report:
  We observed the field of GRB 111029A (Troja et al., GCN 12498) with the robotic Super-LOTIS telescope under good conditions beginning 142 seconds after the BAT trigger. Our observations consisted of 5 10-sec images, 5 20-sec images, and 30 60-sec images in the R band.
  Stacked images reveal no new sources in the XRT enhanced error circle (Evans et al., GCN 12502) brighter than 19.5 magnitudes in R as calibrated relative to the USNO B1.0 catalog.
  This message may be cited.
• GCN Circular #12515
  A. S. Moskvitin and V. V. Sokolov report on behalf of larger collaboration:
  The field of GRB 111029A (Troja et al., GCN#12498) was observed with the Zeiss-1000 telescope of SAO RAS (Russia) on October 29/30 night. 12 x 300 sec. in Rc and 12 x 300 sec. in Ic images were obtained under the good conditions and the seeing 2" (FWHM of stellar-like objects at the co-added images). The observation started at 21:31:21 October 29 (since 11.8 hours after the trigger), finished at 00:33:51 October, 30 UT.
  No optical counterpart was detected within the XRT 1".9 error circle (according to http://www.swift.ac.uk/xrt_positions/ ) up to the 3 sigma limiting magnitudes R_lim = 24.6 and I_lim = 23.3. The calibration was done against R2 and I magnitudes of nearby USNO B-1.0 stars. The Rc and Ic images can be found at ftp://ftp.sao.ru/pub/grb/GRB111029A/GRB111029A.jpg
  The closest object is located 4".65 South-West from the center of XRT error circle. The brightness of this object is R = 22.99 +/- 0.32, I = 21.79 +/- 0.28 (the high error is due to calibration) and the coordinates are R.A.(J2000) = 02:59:07.71, Dec.(J2000) = +57:06:35.5, with the uncertainty 0".21. Due to cosmological nature of GRBs this object probably can not be related to the GRB 111029A.
  
• GCN Circular #12516
  J. Wren, W. T. Vestrand, P. Wozniak, and H. Davis of Los Alamos National Laboratory report:
  The RAPTOR wide-field optical monitors made observations of Swift trigger 506519 (Troja et al., GCN 12498) during the gamma-ray emitting interval. These systems began 10 s exposures at 09:44:40 UTC, coincident with the BAT trigger time, and 09:45:00, coincident with the primary interval in which BAT observed the most prominent gamma-ray emission. No counterpart was detected in any of the unfiltered images taken by the sky monitoring systems with 3-sigma limiting magntiudes of 10.7 when compared with the Tycho-2 V-band.