Gamma-ray Burst 140129A

(All information courtesy of the instrument teams.)

Previous IAU Circulars

none

Results of Observations

GCN/BACODINE POSITION NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 29 Jan 14 03:24:54 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     585128,   Seg_Num: 0
GRB_RA:           37.869d {+02h 31m 29s} (J2000),
                  38.048d {+02h 32m 12s} (current),
                  37.233d {+02h 28m 56s} (1950)
GRB_DEC:          -1.587d {-01d 35' 11"} (J2000),
                  -1.525d {-01d 31' 29"} (current),
                  -1.807d {-01d 48' 26"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       12426 [cnts]    Image_Peak=263 [image_cnts]
TRIGGER_DUR:     4.096 [sec] 
TRIGGER_INDEX:   450     E_range: 15-50 keV
BKG_INTEN:       113658 [cnts]
BKG_TIME:        12180.42 SOD {03:23:00.42} UT
BKG_DUR:         40 [sec]
GRB_DATE:        16686 TJD;    29 DOY;   14/01/29
GRB_TIME:        12239.43 SOD {03:23:59.43} UT
GRB_PHI:         -79.75 [deg]
GRB_THETA:        26.43 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     8.48 [sigma]
IMAGE_SIGNIF:    7.08 [sigma]
MERIT_PARAMS:     +1  +0  +0  +2  +1  -3  +0  +0  -7  +0 
SUN_POSTN:       311.57d {+20h 46m 17s}  -17.97d {-17d 58' 09"}
SUN_DIST:         86.18 [deg]   Sun_angle= -5.8 [hr] (East of Sun)
MOON_POSTN:      284.92d {+18h 59m 40s}  -17.96d {-17d 57' 19"}
MOON_DIST:       111.43 [deg]
MOON_ILLUM:      5 [%]
GAL_COORDS:      170.35,-54.97 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       34.97,-15.63 [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 = 186.05,-20.53 [deg].

red DSS finding chart ps-file

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 29 Jan 14 03:26:03 UT
NOTICE_TYPE:     Swift-XRT Nack-Position
TRIGGER_NUM:     585128,   Seg_Num: 0
POINT_RA:         37.890d {+02h 31m 34s} (J2000)
POINT_DEC:        -1.585d {-01d 35' 04"} (J2000)
IMG_START_DATE:  16686 TJD;    29 DOY;   14/01/29
IMG_START_TIME:  12352.93 SOD {03:25:52.93} UT,   113.5 [sec] since BAT Trigger Time
COUNTS:          6    Min_needed= 20
STD_DEV:         0.00   Max_StdDev_for_Good=28.44 [arcsec]
PH2_ITER:        1    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:     Wed 29 Jan 14 03:27:53 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     585128,   Seg_Num: 0
GRB_RA:           37.869d {+02h 31m 29s} (J2000),
                  38.048d {+02h 32m 12s} (current),
                  37.233d {+02h 28m 56s} (1950)
GRB_DEC:          -1.587d {-01d 35' 11"} (J2000),
                  -1.525d {-01d 31' 29"} (current),
                  -1.807d {-01d 48' 26"} (1950)
GRB_DATE:        16686 TJD;    29 DOY;   14/01/29
GRB_TIME:        12239.43 SOD {03:23:59.43} UT
TRIGGER_INDEX:   450
GRB_PHI:         -79.75 [deg]
GRB_THETA:        26.43 [deg]
DELTA_TIME:      19.00 [sec]
TRIGGER_DUR:     4.096 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     8.48 [sigma]
IMAGE_SIGNIF:    7.08 [sigma]
LC_URL:          sw00585128000msb.lc
SUN_POSTN:       311.57d {+20h 46m 17s}  -17.97d {-17d 58' 07"}
SUN_DIST:         86.18 [deg]   Sun_angle= -5.8 [hr] (East of Sun)
MOON_POSTN:      284.95d {+18h 59m 47s}  -17.95d {-17d 57' 05"}
MOON_DIST:       111.40 [deg]
MOON_ILLUM:      5 [%]
GAL_COORDS:      170.35,-54.97 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       34.97,-15.63 [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 = 186.05,-20.53 [deg].

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 29 Jan 14 03:28:52 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     585128,   Seg_Num: 0
POINT_RA:         37.890d {+02h 31m 34s} (J2000)
POINT_DEC:        -1.585d {-01d 35' 04"} (J2000)
POINT_ROLL:      252.097d
IMG_START_DATE:  16686 TJD;    29 DOY;   14/01/29
IMG_START_TIME:  12356.23 SOD {03:25:56.23} UT,   116.8 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        3.044
N_STARS:         19
X_OFFSET:        647 [pixels]
Y_OFFSET:        500 [pixels]
X_MAX:           1606 [pixels]
Y_MAX:           1459 [pixels]
DET_THRESH:      14
PHOTO_THRESH:    8
SL_URL:          sw00585128000msufc0116.fits
SUN_POSTN:       311.57d {+20h 46m 18s}  -17.97d {-17d 58' 06"}
SUN_DIST:         86.20 [deg]   Sun_angle= -5.8 [hr] (East of Sun)
MOON_POSTN:      284.96d {+18h 59m 50s}  -17.95d {-17d 57' 00"}
MOON_DIST:       111.41 [deg]
MOON_ILLUM:      5 [%]
GAL_COORDS:      170.37,-54.96 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       34.99,-15.64 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 29 Jan 14 03:29:23 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     585128,   Seg_Num: 0
POINT_RA:         37.890d {+02h 31m 34s} (J2000)
POINT_DEC:        -1.585d {-01d 35' 04"} (J2000)
POINT_ROLL:      252.097d
IMG_START_DATE:  16686 TJD;    29 DOY;   14/01/29
IMG_START_TIME:  12356.23 SOD {03:25:56.23} UT,   116.8 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        3.044
N_STARS:         19
X_OFFSET:        647 [pixels]
Y_OFFSET:        500 [pixels]
X_MAX:           1606 [pixels]
Y_MAX:           1459 [pixels]
DET_THRESH:      14
PHOTO_THRESH:    8
SL_URL:          sw00585128000msufc0116.fits
SUN_POSTN:       311.57d {+20h 46m 18s}  -17.97d {-17d 58' 06"}
SUN_DIST:         86.20 [deg]   Sun_angle= -5.8 [hr] (East of Sun)
MOON_POSTN:      284.96d {+18h 59m 51s}  -17.95d {-17d 56' 57"}
MOON_DIST:       111.41 [deg]
MOON_ILLUM:      5 [%]
GAL_COORDS:      170.37,-54.96 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       34.99,-15.64 [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:     Wed 29 Jan 14 03:30:22 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     585128,   Seg_Num: 0
POINT_RA:         37.890d {+02h 31m 34s} (J2000)
POINT_DEC:        -1.585d {-01d 35' 04"} (J2000)
ROLL:            252.097d
IMG_START_DATE:  16686 TJD;    29 DOY;   14/01/29
IMG_START_TIME:  12356.23 SOD {03:25:56.23} UT,   116.8 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     412658767
X_OFFSET:        966 [pixels]
Y_OFFSET:        819 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1126
Y_GRB_POS:       979
BINNING_INDEX:   1
IM_URL:          sw00585128000msuni0128.fits
SUN_POSTN:       311.57d {+20h 46m 18s}  -17.97d {-17d 58' 05"}
SUN_DIST:         86.20 [deg]   Sun_angle= -5.8 [hr] (East of Sun)
MOON_POSTN:      284.98d {+18h 59m 54s}  -17.95d {-17d 56' 53"}
MOON_DIST:       111.40 [deg]
MOON_ILLUM:      5 [%]
GAL_COORDS:      170.37,-54.96 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       34.99,-15.64 [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:     Wed 29 Jan 14 03:30:34 UT
NOTICE_TYPE:     Swift-XRT Position
TRIGGER_NUM:     585128,   Seg_Num: 0
GRB_RA:           37.8910d {+02h 31m 33.83s} (J2000),
                  38.0700d {+02h 32m 16.81s} (current),
                  37.2555d {+02h 29m 01.32s} (1950)
GRB_DEC:          -1.5958d {-01d 35' 44.8"} (J2000),
                  -1.5340d {-01d 32' 02.4"} (current),
                  -1.8165d {-01d 48' 59.2"} (1950)
GRB_ERROR:       3.7 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  16686 TJD;    29 DOY;   14/01/29
IMG_START_TIME:  12390.00 SOD {03:26:30.00} UT,   150.6 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       311.57d {+20h 46m 18s}  -17.97d {-17d 58' 05"}
SUN_DIST:         86.19 [deg]   Sun_angle= -5.8 [hr] (East of Sun)
MOON_POSTN:      284.98d {+18h 59m 55s}  -17.95d {-17d 56' 52"}
MOON_DIST:       111.39 [deg]
MOON_ILLUM:      5 [%]
GAL_COORDS:      170.38,-54.96 [deg] galactic lon,lat of the burst
ECL_COORDS:       34.99,-15.65 [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 NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 29 Jan 14 03:30:32 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     585128,   Seg_Num: 0
POINT_RA:         37.890d {+02h 31m 34s} (J2000)
POINT_DEC:        -1.585d {-01d 35' 04"} (J2000)
ROLL:            252.097d
IMG_START_DATE:  16686 TJD;    29 DOY;   14/01/29
IMG_START_TIME:  12356.23 SOD {03:25:56.23} UT,   116.8 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     412658767
X_OFFSET:        966 [pixels]
Y_OFFSET:        819 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1126
Y_GRB_POS:       979
BINNING_INDEX:   1
IM_URL:          sw00585128000msuni0128.fits
SUN_POSTN:       311.57d {+20h 46m 18s}  -17.97d {-17d 58' 05"}
SUN_DIST:         86.20 [deg]   Sun_angle= -5.8 [hr] (East of Sun)
MOON_POSTN:      284.98d {+18h 59m 54s}  -17.95d {-17d 56' 52"}
MOON_DIST:       111.40 [deg]
MOON_ILLUM:      5 [%]
GAL_COORDS:      170.37,-54.96 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       34.99,-15.64 [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:     Wed 29 Jan 14 03:33:31 UT
NOTICE_TYPE:     Swift-UVOT Position
TRIGGER_NUM:     585128,   Seg_Num: 0
GRB_RA:           37.8908d {+02h 31m 33.79s} (J2000),
                  38.0699d {+02h 32m 16.76s} (current),
                  37.2553d {+02h 29m 01.28s} (1950)
GRB_DEC:          -1.5953d {-01d 35' 43.0"} (J2000),
                  -1.5335d {-01d 32' 00.6"} (current),
                  -1.8160d {-01d 48' 57.4"} (1950)
GRB_ERROR:       1.1 [arcsec radius, statistical only]
GRB_MAG:         16.73 +/- 0.40 [mag]
FILTER:          10, White
IMG_START_DATE:  16686 TJD;    29 DOY;   14/01/29
IMG_START_TIME:  12355.00 SOD {03:25:55.00} UT,   115.6 [sec] since BAT Trigger Time
SUN_POSTN:       311.58d {+20h 46m 18s}  -17.97d {-17d 58' 03"}
SUN_DIST:         86.19 [deg]   Sun_angle= -5.8 [hr] (East of Sun)
MOON_POSTN:      285.01d {+19h 00m 02s}  -17.94d {-17d 56' 38"}
MOON_DIST:       111.36 [deg]
MOON_ILLUM:      5 [%]
GAL_COORDS:      170.38,-54.96 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       34.99,-15.65 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT UVOT Position Notice.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.  
COMMENTS:        Result based on srclist data.  
COMMENTS:        Notice generated automatically.

GCN Circular #15760
A. Melandri (INAF-OAB), W. H. Baumgartner (GSFC/UMBC), M. G. Bernardini (INAF-OAB), N. Gehrels (NASA/GSFC), J. A. Kennea (PSU), A. Y. Lien (NASA/GSFC/ORAU), F. E. Marshall (NASA/GSFC), D. M. Palmer (LANL), B. Sbarufatti (INAF-OAB/PSU), C. A. Swenson (PSU) and T. N. Ukwatta (MSU) report on behalf of the Swift Team:
At 03:23:59 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 140129A (trigger=585128). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 37.869, -1.587 which is
```
   RA(J2000) = 02h 31m 29s
   Dec(J2000) = -01d 35' 11"
```
with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed a single peaked structure with a duration of about 5 sec. The peak count rate was ~500 counts/sec (15-350 keV), at ~4 sec after the trigger.
The XRT began observing the field at 03:25:52.9 UT, 113.5 seconds after the BAT trigger. Using promptly downlinked data we find a fading, uncatalogued X-ray source located at RA, Dec 37.89128, -1.59554 which is equivalent to:
```
   RA(J2000)  = 02h 31m 33.91s
   Dec(J2000) = -01d 35' 43.9"
```
with an uncertainty of 3.6 arcseconds (radius, 90% containment). This location is 85 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.
A power-law fit to a spectrum formed from promptly downlinked event data gives a column density in excess of the Galactic value (2.55 x 10^20 cm^-2, Kalberla et al. 2005), with an excess column of 2.2 (+1.80/-1.58) x 10^21 cm^-2 (90% confidence).
UVOT took a finding chart exposure of 150 seconds with the White filter starting 116 seconds after the BAT trigger. There is a candidate afterglow in the list of sources generated on-board at
```
  RA(J2000)  =	02:31:33.81 =  37.89087
  DEC(J2000) = -01:35:43.3  =  -1.59536
```
with a 90%-confidence error radius of about 1.10 arc sec. This position is 1.6 arc sec. from the center of the XRT error circle. The estimated magnitude is 16.74. No correction has been made for the expected extinction corresponding to E(B-V) of 0.03.
Burst Advocate for this burst is A. Melandri (andrea.melandri AT brera.inaf.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 NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 29 Jan 14 03:36:28 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     585128,   Seg_Num: 0
POINT_RA:         37.893d {+02h 31m 34s} (J2000)
POINT_DEC:        -1.583d {-01d 34' 59"} (J2000)
POINT_ROLL:      252.098d
IMG_START_DATE:  16686 TJD;    29 DOY;   14/01/29
IMG_START_TIME:  12514.43 SOD {03:28:34.43} UT,   275.0 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        0.824
N_STARS:         16
X_OFFSET:        407 [pixels]
Y_OFFSET:        260 [pixels]
X_MAX:           1846 [pixels]
Y_MAX:           1699 [pixels]
DET_THRESH:      8
PHOTO_THRESH:    4
SL_URL:          sw00585128000msufc0275.fits
SUN_POSTN:       311.58d {+20h 46m 19s}  -17.97d {-17d 58' 01"}
SUN_DIST:         86.20 [deg]   Sun_angle= -5.8 [hr] (East of Sun)
MOON_POSTN:      285.04d {+19h 00m 10s}  -17.94d {-17d 56' 23"}
MOON_DIST:       111.34 [deg]
MOON_ILLUM:      5 [%]
GAL_COORDS:      170.37,-54.95 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       35.00,-15.64 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 29 Jan 14 03:36:43 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     585128,   Seg_Num: 0
POINT_RA:         37.893d {+02h 31m 34s} (J2000)
POINT_DEC:        -1.583d {-01d 34' 59"} (J2000)
POINT_ROLL:      252.098d
IMG_START_DATE:  16686 TJD;    29 DOY;   14/01/29
IMG_START_TIME:  12514.43 SOD {03:28:34.43} UT,   275.0 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        0.824
N_STARS:         16
X_OFFSET:        407 [pixels]
Y_OFFSET:        260 [pixels]
X_MAX:           1846 [pixels]
Y_MAX:           1699 [pixels]
DET_THRESH:      8
PHOTO_THRESH:    4
SL_URL:          sw00585128000msufc0275.fits
SUN_POSTN:       311.58d {+20h 46m 19s}  -17.97d {-17d 58' 01"}
SUN_DIST:         86.20 [deg]   Sun_angle= -5.8 [hr] (East of Sun)
MOON_POSTN:      285.04d {+19h 00m 11s}  -17.94d {-17d 56' 22"}
MOON_DIST:       111.34 [deg]
MOON_ILLUM:      5 [%]
GAL_COORDS:      170.37,-54.95 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       35.00,-15.64 [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:     Wed 29 Jan 14 03:37:43 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     585128,   Seg_Num: 0
POINT_RA:         37.893d {+02h 31m 34s} (J2000)
POINT_DEC:        -1.583d {-01d 34' 59"} (J2000)
ROLL:            252.098d
IMG_START_DATE:  16686 TJD;    29 DOY;   14/01/29
IMG_START_TIME:  12514.43 SOD {03:28:34.43} UT,   275.0 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     412658926
X_OFFSET:        966 [pixels]
Y_OFFSET:        819 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1126
Y_GRB_POS:       979
BINNING_INDEX:   1
IM_URL:          sw00585128000msuni0287.fits
SUN_POSTN:       311.58d {+20h 46m 19s}  -17.97d {-17d 58' 00"}
SUN_DIST:         86.20 [deg]   Sun_angle= -5.8 [hr] (East of Sun)
MOON_POSTN:      285.06d {+19h 00m 13s}  -17.94d {-17d 56' 17"}
MOON_DIST:       111.33 [deg]
MOON_ILLUM:      5 [%]
GAL_COORDS:      170.37,-54.95 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       35.00,-15.64 [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:     Wed 29 Jan 14 03:37:39 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     585128,   Seg_Num: 0
GRB_RA:           37.8907d {+02h 31m 33.76s} (J2000),
                  38.0698d {+02h 32m 16.74s} (current),
                  37.2552d {+02h 29m 01.25s} (1950)
GRB_DEC:          -1.5956d {-01d 35' 44.1"} (J2000),
                  -1.5338d {-01d 32' 01.7"} (current),
                  -1.8163d {-01d 48' 58.5"} (1950)
GRB_ERROR:       2.1 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  16686 TJD;    29 DOY;   14/01/29
IMG_START_TIME:  12390.00 SOD {03:26:30.00} UT,   150.6 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       311.58d {+20h 46m 19s}  -17.97d {-17d 58' 00"}
SUN_DIST:         86.19 [deg]   Sun_angle= -5.8 [hr] (East of Sun)
MOON_POSTN:      285.05d {+19h 00m 13s}  -17.94d {-17d 56' 18"}
MOON_DIST:       111.32 [deg]
MOON_ILLUM:      5 [%]
GAL_COORDS:      170.38,-54.96 [deg] galactic lon,lat of the burst
ECL_COORDS:       34.99,-15.65 [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:     Wed 29 Jan 14 03:37:59 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     585128,   Seg_Num: 0
POINT_RA:         37.893d {+02h 31m 34s} (J2000)
POINT_DEC:        -1.583d {-01d 34' 59"} (J2000)
ROLL:            252.098d
IMG_START_DATE:  16686 TJD;    29 DOY;   14/01/29
IMG_START_TIME:  12514.43 SOD {03:28:34.43} UT,   275.0 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     412658926
X_OFFSET:        966 [pixels]
Y_OFFSET:        819 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1126
Y_GRB_POS:       979
BINNING_INDEX:   1
IM_URL:          sw00585128000msuni0287.fits
SUN_POSTN:       311.58d {+20h 46m 19s}  -17.97d {-17d 58' 00"}
SUN_DIST:         86.20 [deg]   Sun_angle= -5.8 [hr] (East of Sun)
MOON_POSTN:      285.06d {+19h 00m 14s}  -17.94d {-17d 56' 16"}
MOON_DIST:       111.32 [deg]
MOON_ILLUM:      5 [%]
GAL_COORDS:      170.37,-54.95 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       35.00,-15.64 [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:     Wed 29 Jan 14 03:43:16 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     585128,   Seg_Num: 0
POINT_RA:         37.894d {+02h 31m 34s} (J2000)
POINT_DEC:        -1.584d {-01d 35' 00"} (J2000)
POINT_ROLL:      252.098d
IMG_START_DATE:  16686 TJD;    29 DOY;   14/01/29
IMG_START_TIME:  13116.86 SOD {03:38:36.86} UT,   877.4 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        2.856
N_STARS:         37
X_OFFSET:        407 [pixels]
Y_OFFSET:        260 [pixels]
X_MAX:           1846 [pixels]
Y_MAX:           1699 [pixels]
DET_THRESH:      14
PHOTO_THRESH:    7
SL_URL:          sw00585128000msufc0877.fits
SUN_POSTN:       311.58d {+20h 46m 20s}  -17.97d {-17d 57' 57"}
SUN_DIST:         86.19 [deg]   Sun_angle= -5.8 [hr] (East of Sun)
MOON_POSTN:      285.12d {+19h 00m 28s}  -17.93d {-17d 55' 50"}
MOON_DIST:       111.27 [deg]
MOON_ILLUM:      5 [%]
GAL_COORDS:      170.37,-54.95 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       35.00,-15.64 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 29 Jan 14 03:43:37 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     585128,   Seg_Num: 0
POINT_RA:         37.894d {+02h 31m 34s} (J2000)
POINT_DEC:        -1.584d {-01d 35' 00"} (J2000)
POINT_ROLL:      252.098d
IMG_START_DATE:  16686 TJD;    29 DOY;   14/01/29
IMG_START_TIME:  13116.86 SOD {03:38:36.86} UT,   877.4 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        2.856
N_STARS:         37
X_OFFSET:        407 [pixels]
Y_OFFSET:        260 [pixels]
X_MAX:           1846 [pixels]
Y_MAX:           1699 [pixels]
DET_THRESH:      14
PHOTO_THRESH:    7
SL_URL:          sw00585128000msufc0877.fits
SUN_POSTN:       311.58d {+20h 46m 20s}  -17.97d {-17d 57' 56"}
SUN_DIST:         86.19 [deg]   Sun_angle= -5.8 [hr] (East of Sun)
MOON_POSTN:      285.12d {+19h 00m 29s}  -17.93d {-17d 55' 49"}
MOON_DIST:       111.27 [deg]
MOON_ILLUM:      5 [%]
GAL_COORDS:      170.37,-54.95 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       35.00,-15.64 [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:     Wed 29 Jan 14 03:44:30 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     585128,   Seg_Num: 0
POINT_RA:         37.894d {+02h 31m 34s} (J2000)
POINT_DEC:        -1.584d {-01d 35' 00"} (J2000)
ROLL:            252.098d
IMG_START_DATE:  16686 TJD;    29 DOY;   14/01/29
IMG_START_TIME:  13116.86 SOD {03:38:36.86} UT,   877.4 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     412659528
X_OFFSET:        966 [pixels]
Y_OFFSET:        819 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1126
Y_GRB_POS:       979
BINNING_INDEX:   1
IM_URL:          sw00585128000msuni0889.fits
SUN_POSTN:       311.58d {+20h 46m 20s}  -17.97d {-17d 57' 56"}
SUN_DIST:         86.19 [deg]   Sun_angle= -5.8 [hr] (East of Sun)
MOON_POSTN:      285.13d {+19h 00m 31s}  -17.93d {-17d 55' 45"}
MOON_DIST:       111.26 [deg]
MOON_ILLUM:      5 [%]
GAL_COORDS:      170.37,-54.95 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       35.00,-15.64 [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:     Wed 29 Jan 14 03:44:40 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     585128,   Seg_Num: 0
POINT_RA:         37.894d {+02h 31m 34s} (J2000)
POINT_DEC:        -1.584d {-01d 35' 00"} (J2000)
ROLL:            252.098d
IMG_START_DATE:  16686 TJD;    29 DOY;   14/01/29
IMG_START_TIME:  13116.86 SOD {03:38:36.86} UT,   877.4 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     412659528
X_OFFSET:        966 [pixels]
Y_OFFSET:        819 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1126
Y_GRB_POS:       979
BINNING_INDEX:   1
IM_URL:          sw00585128000msuni0889.fits
SUN_POSTN:       311.58d {+20h 46m 20s}  -17.97d {-17d 57' 56"}
SUN_DIST:         86.19 [deg]   Sun_angle= -5.8 [hr] (East of Sun)
MOON_POSTN:      285.13d {+19h 00m 31s}  -17.93d {-17d 55' 44"}
MOON_DIST:       111.26 [deg]
MOON_ILLUM:      5 [%]
GAL_COORDS:      170.37,-54.95 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       35.00,-15.64 [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 Circular #15761
D. A. Perley (Caltech) and S. B. Cenko (NASA/GSFC) report on behalf of a larger calibration:
The Palomar 60-inch telescope automatically responded to the Swift trigger for GRB 140129A (Melandri et al., GCN 15760) and began taking images at 03:27:37.8 UT, about 3.6 minutes post-GRB trigger.
We detect a bright source, not present in USNO B1.0, at the following location consistent with the Swift XRT and UVOT error circles:
```
RA  =  02:31:33.78
dec = -01:35:42.88
(J2000)
```
The source is detected in r, i, and z filters, and fades rapidly from r=16.29 to r=19.44 between UT 03:28 and 04:07.
GCN Circular #15762
A. Cucchiara (NASA-GSFC), Nat Butler (ASU), Alan M. Watson (UNAM), Alexander Kutyrev (GSFC), William H. Lee (UNAM), Michael G. Richer (UNAM), Chris Klein (UCB), Ori Fox (UCB), J. Xavier Prochaska (UCSC), Josh Bloom (UCB), Eleonora Troja (GSFC), Owen Littlejohns (ASU), Enrico Ramirez-Ruiz (UCSC), Jos=E9 A. de Diego (UNAM), Leonid Georgiev (UNAM), Jes=FAs Gonz=E1lez (UNAM), Carlos Rom=E1n-Z=FA=F1iga (UNAM), Neil Gehrels (GSFC), and Harvey Moseley (GSFC) report:
We began observing the field of GRB 140129A (Melandri, et al., GCN 15760) with the Reionization and Transients Infrared Camera (RATIR; www.ratir.org) on the 1.5m Harold Johnson Telescope at the Observatorio Astron=F3mico Nacional on Sierra San Pedro M=E1rtir at 2014/01 29.15 (12.6 minutes after the BAT trigger).
For a source within the Swift-XRT error circle, in comparison with the SDSS DR9 and 2MASS, we obtain the following detections:
```
Filter    mag(T0+0.12.6 minutes)	mag(12.6 to 44.4 minutes) 
  r	  18.05 +/- 0.01		18.80 +/- 0.01
  i	  17.85 +/- 0.02		18.67 +/- 0.02
  Z	  17.72 +/- 0.03		18.50 +/- 0.03
  Y	  17.82 +/- 0.04		18.33 +/- 0.03
  J	  17.65 +/- 0.05		18.35 +/- 0.04
  H	  17.68 +/- 0.07		18.19 +/- 0.05
```
These magnitudes are in the AB system and are not corrected for Galactic extinction in the direction of the GRB.=20 Further observations are underway.
We thank the staff of the Observatorio Astron=F3mico Nacional in San Pedro M=E1rtir.
GCN Circular #15763
F. V. Ferrante (SMU), W. Zheng (UC Berkeley), R. Kehoe (SMU), G. Dhungana (SMU) report on behalf of the ROTSE GRB team:
The 0.45m ROTSE-IIIb telescope located at McDonald Observatory, Texas, responded to GRB 140129A (Swift trigger 585128; Melandri, et al., GCN 15760). The first image was at 03:24:58.3 UT, 57.0 s after the burst (8.3 s after the GCN notice time). The unfiltered images are calibrated relative to USNO A2.0. We confirm the afterglow candidate reported by UVOT and detect a bright source which fades rapidly from magnitude 14.1 to 16.0 between UT 03:24:58.3 and 03:26:55.7. Continuing observations are in progress.
GCN Circular #15764
P.A. Evans, M.R. Goad, J.P. Osborne and A.P. Beardmore (U. Leicester) report on behalf of the Swift-XRT team.
Using 4216 s of XRT Photon Counting mode data and 7 UVOT images for GRB 140129A, 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 = 37.89093, -1.59545 which is equivalent to:
```
RA (J2000): 02h 31m 33.82s
Dec (J2000): -01d 35' 43.6"
```
with an uncertainty of 1.5 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 #15767
M.C. Stroh (PSU), B.P. Gompertz (U. Leicester), J.P. Osborne (U. Leicester), K.L. Page (U. Leicester), P. D'Avanzo (INAF-OAB), V. D'Elia (ASDC), A. Maselli (INAF-IASFPA), D.N. Burrows (PSU), J.A. Kennea (PSU) and A. Melandri report on behalf of the Swift-XRT team:
We have analysed 9.3 ks of XRT data for GRB 140129A (Melandri et al. GCN Circ. 15760), from 99 s to 19.2 ks after the BAT trigger. The data comprise 45 s in Windowed Timing (WT) mode (the first 8 s were taken while Swift was slewing) with the remainder in Photon Counting (PC) mode. The enhanced XRT position for this burst was given by Evans et al. (GCN. Circ 15764).
The light curve can be modelled with a power-law decay with a decay index of alpha=0.89 (+/-0.03).
A spectrum formed from the PC mode data can be fitted with an absorbed power-law with a photon spectral index of 1.94 (+0.13, -0.12). The best-fitting absorption column is 4.0 (+2.5, -1.4) x 10^20 cm^-2, consistent with the Galactic value of 2.6 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 3.6 x 10^-11 (4.0 x 10^-11) erg cm^-2 count^-1.
A summary of the PC-mode spectrum is thus:
```
Total column:	     4.0 (+2.5, -1.4) x 10^20 cm^-2
Galactic foreground: 2.6 x 10^20 cm^-2
Excess significance: <1.6 sigma
Photon index:	     1.94 (+0.13, -0.12)
```
If the light curve continues to decay with a power-law decay index of 0.89, the count rate at T+24 hours will be 8.7 x 10^-3 count s^-1, corresponding to an observed (unabsorbed) 0.3-10 keV flux of 3.1 x 10^-13 (3.5 x 10^-13) erg cm^-2 s^-1.
The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00585128.
This circular is an official product of the Swift-XRT team.
GCN Circular #15768
C. A. Swenson (PSU) and A. Melandri (INAF-OAB) report on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 140129A 117 s after the BAT trigger (Melandri et al., GCN Circ. 15760). A source consistent with the XRT position (Evans et al. GCN Circ. 15764) is detected in the initial UVOT exposures.
The preliminary UVOT position is:
```
     RA  (J2000) =3D  02:31:33.78 =3D  37.89076 (deg.)
     Dec (J2000) =3D -01:35:43.4  =3D  -1.59539 (deg.)
```
with an estimated uncertainty of 0.50 arc sec. (radius, 90% confidence).
Preliminary detections and 3-sigma upper limits using the UVOT=20 photometric system (Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the early=20 exposures are:
```
Filter         T_start(s)   T_stop(s)      Exp(s) Mag

white              117          267          147 16.51 =B1 0.03
v                  605         1250           78 18.69 =B1 0.24
b                  531          551           20 17.76 =B1 0.14
u                  275          525          246 16.98 =B1 0.04
w1                 654        17641         1357 20.77 =B1 0.22
m2                5292        13449         1054 >21.2
w2                 753        11858         1102 >22.0
```
The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) =3D 0.03 in the direction of the burst (Schlegel et al. 1998).
GCN Circular #15769
C. B. Markwardt (GSFC), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), J. R. Cummings (GSFC/UMBC), N. Gehrels (GSFC), H. A. Krimm (GSFC/USRA), A. Y. Lien (NASA/UMBC), A. Melandri (INAF-OAB), D. M. Palmer (LANL), T. Sakamoto (AGU), M. Stamatikos (OSU), J. Tueller (GSFC), T. N. Ukwatta (MSU) (i.e. the Swift-BAT team):
Using the data set from T-239 to T+963 sec from the recent telemetry downlink, we report further analysis of BAT GRB 140129A (trigger #585128) (Melandri, et al., GCN Circ. 15760). The BAT ground-calculated position is RA, Dec = 37.851, -1.594 deg which is
```
  RA(J2000)  =  02h 31m 24.2s
  Dec(J2000) = -01d 35' 40.1"
```
with an uncertainty of 2.2 arcmin, (radius, sys+stat, 90% containment). The partial coding was 57%.
The mask-weighted light curve shows a single peak structure starts at ~T+1.2 s, peaks at ~T+2.5 s, and ends at ~ T+4.6 s. T90 (15-350 keV) is 2.99 +- 0.79 sec (estimated error including systematics).
The time-averaged spectrum from T+1.25 to T+4.62 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 2.08 +- 0.33. The fluence in the 15-150 keV band is 1.3 +- 0.3 x 10^-7 erg/cm2. The 1-sec peak photon flux measured from T+1.91 sec in the 15-150 keV band is 0.9 +- 0.2 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/585128/BA/
GCN Circular #15771
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 MITSuME collaboration:
We observed the field of GRB 140129A (Melandri et al., GCNC 15760) 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 2014-01-29 09:31:12 UT (~6.1 h after the burst). We could not detect the previously reported afterglow (Melandri et al., GCNC 15760; Perley and Cenko, GCNC 15761) 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
-----------------------------------------------------
0.29723    10:32:00    4020.0   >19.6  >19.7  >18.9
-----------------------------------------------------
T0+ : Elapsed time after the burst [day]
```
GCN Circular #15772
J. Wren, W.T. Vestrand, P. Wozniak, and H. Davis, of Los Alamos National Laboratory report:
The RAPTOR network of robotic optical telescopes made follow-up observations of Swift trigger 585128 (Melandri, et al., GCN 15760). Our narrow-field instruments in Los Alamos, NM, began imaging at 03:25:05.19 UT, 65.7 seconds after the BAT trigger time. Our RAPTOR-T robotic telescope measured the counterpart simultaneously in SDSS g', r', i', and z' bands through the first 1000 seconds after the BAT trigger. In r' band, the counterpart is at magnitude 14.72 +- 0.04 at T+68.22 seconds. By T+217.21, the source had faded to r' magnitude 16.24 +- 0.07, consistent with the P60 observations (Perley, et al., GCN 15761). The counterpart fades monotonically during the observation interval. Our images were calibrated to the SDSS DR9 catalog.
GCN Circular #15773
D. A. Perley (Caltech), M. Rafelski, D. Masters (IPAC), and J. X. Prochaska (UCO/Lick) report:
We obtained spectroscopy of the optical afterglow of GRB 140129A (Melandri et al., GCN 15760) with the Double Spectrograph at the 5m Palomar Hale telescope beginning at 04:56:25.2 UT, approximately 1.5 hours after the GRB trigger. Based on our P60 imaging, the GRB afterglow was r~20 mag at this point and the S/N of the spectrum is low, although the trace is clearly detected in each of three 600s exposures. The spectral range covers from the atmospheric cutoff to 8700 Angstroms.
The spectrum is featureless, showing no significant absorption lines over our spectral range (although the EW sensitivity limit is poor). The absence of a DLA feature suggests a redshift of z<1.8 (more conservatively, the lack of IGM absorption down to the atmospheric cutoff indicates z<2.1).
GCN Circular #15775
D. A. Perley (Caltech) reports on behalf of a larger collaboration:
We observed the position of GRB 140129A (Melandri et al., GCN 15760) with the Combined Array for Research in Millimeter Astronomy starting at 04:57:21 UT, 94 minutes after the GRB trigger. Observations continued until 06:10:30 UT (source elevation = 19 degrees). No source is detected at the optical afterglow location to a limiting flux of <1.8 mJy (3 sigma).
We thank C. Hull, N. Volgneau, and the CARMA staff for this rapid observation.
GCN Circular #15779
Nat Butler (ASU), Alan M. Watson (UNAM), Alexander Kutyrev (GSFC), Willia= m H. Lee (UNAM), Michael G. Richer (UNAM), Chris Klein (UCB), Ori Fox (UCB)= , J. Xavier Prochaska (UCSC), Josh Bloom (UCB), Antonino Cucchiara (ORAU/GSFC), Eleonora Troja (GSFC), Owen Littlejohns (ASU), Enrico Ramirez-Ruiz (UCSC), Jos=E9 A. de Diego (UNAM), Leonid Georgiev (UNAM), J= es=FAs Gonz=E1lez (UNAM), Carlos Rom=E1n-Z=FA=F1iga (UNAM), Neil Gehrels (GSFC),= and Harvey Moseley (GSFC) report:
We observed the field of GRB 140129A (Melandri, et al., GCN 15760) with t= he Reionization and Transients Infrared Camera (RATIR; www.ratir.org) on the 1.5m Harold Johnson Telescope at the Observatorio Astron=F3mico Nacional = on Sierra San Pedro M=E1rtir from 2014/01 30.13 to 2014/01 30.23 UTC (23.82 = to 26.22 hours after the BAT trigger), obtaining a total of 1.36 hours exposure in the r and i bands and 0.56 hours exposure in the Z, Y, J, and= H bands.
For a source within the Swift-XRT error circle, in comparison with the SDSS DR9 and 2MASS, we obtain the following detections and upper limits (3-sigma):
```
  r     22.67 +/- 0.13
  i     22.32 +/- 0.11
  Z     22.19 +/- 0.27
  Y     21.94 +/- 0.37
  J     > 21.78
  H     > 21.28
```
These magnitudes are in the AB system and are not corrected for Galactic extinction in the direction of the GRB. The afterglow has faded by sever= al magnitudes in all bands since our observations last night (Cucchiara et al., GCN 15762).
We thank the staff of the Observatorio Astron=F3mico Nacional in San Pedro M=E1rtir.
GCN Circular #15781
A. Volnova (IKI), N. Tungalag (Research Centre of Astronomy and Geophysics MAS ) V. Voropaev (KIAM), I.Molotov (KIAM), A. Pozanenko (IKI) report on behalf of larger GRB follow-up collaboration:
We observed the field of the Swift GRB 140129A (Melandri et al., GCN 15760) on Jan., 29 with ORI-40 telescope of Khureltogot observatory (Mongolia). We took several unfiltered images of 60 s exposure. Within enhanced XRT error circle (Evans et al., GCN 15764) we do not detect the optical afterglow (Melandri et al., GCN 15760).
Details of the photometry are following:
```
UT start        t-T0             Filter   Exp.     OT   UL (3 sigma)
                  (mid, days)                 (s)
12:02:22     0.38515         None   68x60   n/d   20.0
```
The photometry is based 3 SDSS stars, R (gri -> R transformations by Lupton 2005):
```
SDSS id                                 R
J023133.01-013533.5       18.121
J023122.45-013411.0       18.797
J023137.01-013606.5       19.143
```
GCN Circular #15782
Nat Butler (ASU), Alan M. Watson (UNAM), Alexander Kutyrev (GSFC), Willia= m H. Lee (UNAM), Michael G. Richer (UNAM), Chris Klein (UCB), Ori Fox (UCB)= , J. Xavier Prochaska (UCSC), Josh Bloom (UCB), Antonino Cucchiara (ORAU/GSFC), Eleonora Troja (GSFC), Owen Littlejohns (ASU), Enrico Ramirez-Ruiz (UCSC), Jos=E9 A. de Diego (UNAM), Leonid Georgiev (UNAM), Jes=FAs Gonz=E1lez (UNAM), Carlos Rom=E1n-Z=FA=F1iga (UNAM), Neil= Gehrels (GSFC), and Harvey Moseley (GSFC) report:
We again observed the field of GRB 140129A (Melandri, et al., GCN 15760) with the Reionization and Transients Infrared Camera (RATIR; www.ratir.or= g) on the 1.5m Harold Johnson Telescope at the Observatorio Astron=F3mico Nacional on Sierra San Pedro M=E1rtir from 2014/01 31.11 to 2014/01 31.20= UTC (47.35 to 49.51 hours after the BAT trigger), obtaining a total of 1.38 hours exposure in the r and i bands and 0.58 hours exposure in the Z, Y, = J, and H bands.
The afterglow observed previously by RATIR (Cucchiara, et al., GCN 15762; Butler, et al., GCN 15779) is no longer detected. In comparison with the SDSS DR9 and 2MASS, we obtain the following upper limits (3-sigma):
```
  r     > 22.99
  i     > 22.59
  Z     > 21.59
  Y     > 21.14
  J     > 20.82
  H     > 20.49
```
These magnitudes are in the AB system and are not corrected for Galactic
extinction in the direction of the GRB.
GCN Circular #15783
A. Corsi (GWU) reports on behalf of a larger collaboration:
We observed the field of the Swift GRB 140129A (Melandri et al., GCN #15760) using the the Karl G. Jansky Very Large Array (VLA) in C-band, and starting at 00:57:45 UT on 30 Jan 2014. A provisional reduction shows no radio emission above the 3-sigma level of 30uJy (the map rms is ~10uJy at 5 GHz) within the Swift XRT error-circle (Evans et al. GCN #15764). The flux density at the P60 optical afterglow position (Perley & Cenko, GCN #15761) is -8 +/-10 uJy at 5 GHz.
We thank the VLA staff for executing these observations.
GCN Circular #16054
GRB 140129A: Mondy optical observations
A. Volnova (IKI), E. Klunko (ISTP), M. Eselevich (ISTP), I. Korobtsev (ISTP), A. Pozanenko (IKI) report on behalf of larger GRB follow-up collaboration:
We observed the field of the Swift GRB 140129A (Melandri et al., GCN 15760)with AZT-33IK telescope of Sayan observatory (Mondy) starting on on Jan. 29 (UT) 12:21:46. We took several images in R-filter of 60 s exposure. Within enhanced XRT error circle (Evans, GCN 15764) we detected the optical afterglow (Melandri et al., GCN 15760).
The details of the photometry are the following:
```
UT start t-T0 Filter Exp. OT
(mid, days) (s)
12:21:46 0.38805 R 42x60 21.39 +/- 0.25
```
The photometry is based 3 SDSS stars, R (gri -> R transformations by Lupton 2005):
```
SDSS id R
J023133.01-013533.5 18.121
J023122.45-013411.0 18.797
J023137.01-013606.5 19.143
```
GCN Report 451.1
GCN_Report 451.1 has been posted: http://gcn.gsfc.nasa.gov/reports/report_451_1.pdf by A. Melandri at INAF-OAB titled: "Swift Observations of GRB 140129A"

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Jochen Greiner, last update: 26-Apr-2014 [Disclaimer]