Gamma-ray Burst 101017A

(All information courtesy of the instrument teams.)

Previous IAU Circulars

none

Results of Observations

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 17 Oct 10 10:33:03 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     436429,   Seg_Num: 0
GRB_RA:          291.378d {+19h 25m 31s} (J2000),
                 291.555d {+19h 26m 13s} (current),
                 290.554d {+19h 22m 13s} (1950)
GRB_DEC:         -35.141d {-35d 08' 26"} (J2000),
                 -35.119d {-35d 07' 07"} (current),
                 -35.241d {-35d 14' 25"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       8492 [cnts]    Image_Peak=972 [image_cnts]
TRIGGER_DUR:     1.024 [sec]
TRIGGER_INDEX:   148     E_range: 25-100 keV
BKG_INTEN:       24871 [cnts]
BKG_TIME:        37953.72 SOD {10:32:33.72} UT
BKG_DUR:         8 [sec]
GRB_DATE:        15486 TJD;   290 DOY;   10/10/17
GRB_TIME:        37967.41 SOD {10:32:47.41} UT
GRB_PHI:         -48.54 [deg]
GRB_THETA:        36.61 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     95.75 [sigma]
IMAGE_SIGNIF:    20.22 [sigma]
MERIT_PARAMS:     +1  +0  +0  +0  +2  +7  +0  +0 -10  +0
SUN_POSTN:       202.17d {+13h 28m 41s}   -9.29d {-09d 17' 24"}
SUN_DIST:         84.17 [deg]   Sun_angle= -6.0 [hr] (East of Sun)
MOON_POSTN:      323.22d {+21h 32m 52s}  -10.73d {-10d 43' 36"}
MOON_DIST:        37.71 [deg]
MOON_ILLUM:      74 [%]
GAL_COORDS:        3.46,-21.73 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      287.81,-13.01 [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 = 90.18,-0.62 [deg].

red DSS finding chart ps-file

GCN NOTICE

TITLE:          GCN/INTEGRAL NOTICE
NOTICE_DATE:    Sun 17 Oct 10 10:33:56 UT
NOTICE_TYPE:    INTEGRAL SPI ACS Trigger
TRIGGER_NUM:    6076,   Sub_Num: 0
GRB_INTEN:      9.68 [sigma]
GRB_TIME:       37962.20 SOD {10:32:42.20} UT
GRB_DATE:       15486 TJD;   290 DOY;   10/10/17
COMMENTS:       INTEGRAL SPI_ACS GRB Trigger.
COMMENTS:
COMMENTS:       NOTE: This SPIACS event is temporally(5.0<100sec)
+coincident with the SWIFT_BAT event (trignum=436429).
COMMENTS:
COMMENTS:       The SPIACS lightcurve can be found at:
COMMENTS:       ftp://isdcarc.unige.ch/arc/FTP/ibas/spiacs/2010-10/2010-10-17T10-32-42.0490-14930-00007-0.lc

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 17 Oct 10 10:55:37 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     436429,   Seg_Num: 0
POINT_RA:        291.403d {+19h 25m 37s} (J2000)
POINT_DEC:       -35.147d {-35d 08' 49"} (J2000)
ROLL:            262.800d
IMG_START_DATE:  15486 TJD;   290 DOY;   10/10/17
IMG_START_TIME:  38847.04 SOD {10:47:27.04} UT,   879.6 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     309005253
X_OFFSET:        892 [pixels]
Y_OFFSET:        852 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1052
Y_GRB_POS:       1012
BINNING_INDEX:   1
IM_URL:          sw00436429000msuni0886.fits
SUN_POSTN:       202.18d {+13h 28m 44s}   -9.30d {-09d 17' 44"}
SUN_DIST:         84.18 [deg]   Sun_angle= -6.0 [hr] (East of Sun)
MOON_POSTN:      323.39d {+21h 33m 34s}  -10.66d {-10d 39' 25"}
MOON_DIST:        37.86 [deg]
MOON_ILLUM:      74 [%]
GAL_COORDS:        3.46,-21.75 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      287.83,-13.02 [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 #11345
M. H. Siegel (PSU), J. M. Gelbord (PSU), D. Grupe (PSU), S. T. Holland (CRESST/USRA/GSFC), E. A. Hoversten (PSU), C. B. Markwardt (NASA/GSFC), P. T. O'Brien (U Leicester) and D. M. Palmer (LANL) report on behalf of the Swift Team:
At 10:32:47 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 101017A (trigger=436429). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 291.378, -35.141 which is
```
   RA(J2000) = 19h 25m 31s
   Dec(J2000) = -35d 08' 26"
```
with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve shows a complex series of peaks in a FRED envelope about 40 seconds long, with possible further emission out to T+100 seconds. The peak count rate was ~12000 counts/sec (15-350 keV), at ~3 sec after the trigger.
The XRT began observing the field at 10:34:08.4 UT, 81.0 seconds after the BAT trigger. Using promptly downlinked data we find a bright, fading, uncatalogued X-ray source located at RA, Dec 291.38546, -35.14513 which is equivalent to:
```
   RA(J2000)  = 19h 25m 32.51s
   Dec(J2000) = -35d 08' 42.5"
```
with an uncertainty of 3.9 arcseconds (radius, 90% containment). This location is 26 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 (7.69 x 10^20 cm^-2, Kalberla et al. 2005), with an excess column of 4.8 (+3.15/-2.65) x 10^21 cm^-2 (90% confidence).
The initial flux in the 2.5 s image was 8.79e-09 erg cm^-2 s^-1 (0.2-10 keV).
UVOT took a finding chart exposure of 150 seconds with the White filter starting 88 seconds after the BAT trigger. There is a candidate afterglow in the rapidly available 2.7'x2.7' sub-image at RA(J2000) = 19:25:32.56 = 291.38565 DEC(J2000) = -35:08:41.4 = -35.14482 with a 90%-confidence error radius of about 0.72 arc sec. This position is 2.7 arc sec. from the center of the XRT error circle. The estimated magnitude is 19.98 with a 1-sigma error of about 0.19. No correction has been made for the expected extinction corresponding to E(B-V) of 0.17.
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:     Sun 17 Oct 10 10:46:43 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     436429,   Seg_Num: 0
GRB_RA:          291.3854d {+19h 25m 32.49s} (J2000),
                 291.5630d {+19h 26m 15.12s} (current),
                 290.5615d {+19h 22m 14.76s} (1950)
GRB_DEC:         -35.1450d {-35d 08' 42.0"} (J2000),
                 -35.1230d {-35d 07' 22.8"} (current),
                 -35.2447d {-35d 14' 40.7"} (1950)
GRB_ERROR:       2.3 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  15486 TJD;   290 DOY;   10/10/17
IMG_START_TIME:  38270.00 SOD {10:37:50.00} UT,   302.6 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       202.18d {+13h 28m 43s}   -9.29d {-09d 17' 36"}
SUN_DIST:         84.17 [deg]   Sun_angle= -6.0 [hr] (East of Sun)
MOON_POSTN:      323.32d {+21h 33m 17s}  -10.68d {-10d 41' 04"}
MOON_DIST:        37.81 [deg]
MOON_ILLUM:      74 [%]
GAL_COORDS:        3.46,-21.74 [deg] galactic lon,lat of the burst
ECL_COORDS:      287.82,-13.02 [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:     Sun 17 Oct 10 10:47:47 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     436429,   Seg_Num: 0
POINT_RA:        291.403d {+19h 25m 37s} (J2000)
POINT_DEC:       -35.147d {-35d 08' 49"} (J2000)
ROLL:            262.801d
IMG_START_DATE:  15486 TJD;   290 DOY;   10/10/17
IMG_START_TIME:  38268.54 SOD {10:37:48.54} UT,   301.1 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     309004674
X_OFFSET:        893 [pixels]
Y_OFFSET:        853 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1053
Y_GRB_POS:       1013
BINNING_INDEX:   1
IM_URL:          sw00436429000msuni0308.fits
SUN_POSTN:       202.18d {+13h 28m 43s}   -9.29d {-09d 17' 37"}
SUN_DIST:         84.18 [deg]   Sun_angle= -6.0 [hr] (East of Sun)
MOON_POSTN:      323.33d {+21h 33m 19s}  -10.68d {-10d 40' 52"}
MOON_DIST:        37.80 [deg]
MOON_ILLUM:      74 [%]
GAL_COORDS:        3.46,-21.75 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      287.83,-13.02 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Image.  
COMMENTS:        The GRB Position came from the XRT Position Command.  
COMMENTS:        The image has 2x2 binning (compression).  
COMMENTS:        All 4 attachments are included.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 17 Oct 10 10:45:53 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     436429,   Seg_Num: 0
POINT_RA:        291.403d {+19h 25m 37s} (J2000)
POINT_DEC:       -35.147d {-35d 08' 49"} (J2000)
POINT_ROLL:      262.801d
IMG_START_DATE:  15486 TJD;   290 DOY;   10/10/17
IMG_START_TIME:  38268.54 SOD {10:37:48.54} UT,   301.1 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        1.185
N_STARS:         123
X_OFFSET:        573 [pixels]
Y_OFFSET:        533 [pixels]
X_MAX:           1532 [pixels]
Y_MAX:           1492 [pixels]
DET_THRESH:      9
PHOTO_THRESH:    4
SL_URL:          sw00436429000msufc0301.fits
SUN_POSTN:       202.18d {+13h 28m 43s}   -9.29d {-09d 17' 35"}
SUN_DIST:         84.18 [deg]   Sun_angle= -6.0 [hr] (East of Sun)
MOON_POSTN:      323.31d {+21h 33m 16s}  -10.69d {-10d 41' 13"}
MOON_DIST:        37.79 [deg]
MOON_ILLUM:      74 [%]
GAL_COORDS:        3.46,-21.75 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      287.83,-13.02 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 17 Oct 10 10:55:21 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     436429,   Seg_Num: 0
POINT_RA:        291.403d {+19h 25m 37s} (J2000)
POINT_DEC:       -35.147d {-35d 08' 49"} (J2000)
ROLL:            262.800d
IMG_START_DATE:  15486 TJD;   290 DOY;   10/10/17
IMG_START_TIME:  38847.04 SOD {10:47:27.04} UT,   879.6 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     309005253
X_OFFSET:        892 [pixels]
Y_OFFSET:        852 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1052
Y_GRB_POS:       1012
BINNING_INDEX:   1
IM_URL:          sw00436429000msuni0886.fits
SUN_POSTN:       202.18d {+13h 28m 44s}   -9.30d {-09d 17' 44"}
SUN_DIST:         84.18 [deg]   Sun_angle= -6.0 [hr] (East of Sun)
MOON_POSTN:      323.39d {+21h 33m 33s}  -10.66d {-10d 39' 28"}
MOON_DIST:        37.86 [deg]
MOON_ILLUM:      74 [%]
GAL_COORDS:        3.46,-21.75 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      287.83,-13.02 [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:     Sun 17 Oct 10 10:43:11 UT
NOTICE_TYPE:     Swift-UVOT Position
TRIGGER_NUM:     436429,   Seg_Num: 0
GRB_RA:          291.3856d {+19h 25m 32.54s} (J2000),
                 291.5632d {+19h 26m 15.17s} (current),
                 290.5617d {+19h 22m 14.81s} (1950)
GRB_DEC:         -35.1447d {-35d 08' 40.9"} (J2000),
                 -35.1227d {-35d 07' 21.7"} (current),
                 -35.2444d {-35d 14' 39.6"} (1950)
GRB_ERROR:       0.7 [arcsec radius, statistical only]
GRB_MAG:         19.97 +/- 0.19 [mag]
FILTER:          10, White
IMG_START_DATE:  15486 TJD;   290 DOY;   10/10/17
IMG_START_TIME:  38060.00 SOD {10:34:20.00} UT,   92.6 [sec] since BAT Trigger Time
SUN_POSTN:       202.18d {+13h 28m 42s}   -9.29d {-09d 17' 33"}
SUN_DIST:         84.17 [deg]   Sun_angle= -6.0 [hr] (East of Sun)
MOON_POSTN:      323.29d {+21h 33m 11s}  -10.70d {-10d 41' 43"}
MOON_DIST:        37.78 [deg]
MOON_ILLUM:      74 [%]
GAL_COORDS:        3.46,-21.74 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      287.82,-13.02 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT UVOT Position Notice.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.  
COMMENTS:        The UVOT position is 2.9 arcsec from the XRT position.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 17 Oct 10 10:37:37 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     436429,   Seg_Num: 0
POINT_RA:        291.401d {+19h 25m 36s} (J2000)
POINT_DEC:       -35.146d {-35d 08' 44"} (J2000)
POINT_ROLL:      262.803d
IMG_START_DATE:  15486 TJD;   290 DOY;   10/10/17
IMG_START_TIME:  38056.36 SOD {10:34:16.36} UT,   88.9 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        4.211
N_STARS:         190
X_OFFSET:        632 [pixels]
Y_OFFSET:        536 [pixels]
X_MAX:           1591 [pixels]
Y_MAX:           1495 [pixels]
DET_THRESH:      17
PHOTO_THRESH:    10
SL_URL:          sw00436429000msufc0088.fits
SUN_POSTN:       202.17d {+13h 28m 41s}   -9.29d {-09d 17' 28"}
SUN_DIST:         84.19 [deg]   Sun_angle= -6.0 [hr] (East of Sun)
MOON_POSTN:      323.25d {+21h 33m 00s}  -10.71d {-10d 42' 45"}
MOON_DIST:        37.73 [deg]
MOON_ILLUM:      74 [%]
GAL_COORDS:        3.46,-21.75 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      287.83,-13.02 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 17 Oct 10 10:53:50 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     436429,   Seg_Num: 0
POINT_RA:        291.403d {+19h 25m 37s} (J2000)
POINT_DEC:       -35.147d {-35d 08' 49"} (J2000)
POINT_ROLL:      262.800d
IMG_START_DATE:  15486 TJD;   290 DOY;   10/10/17
IMG_START_TIME:  38847.04 SOD {10:47:27.04} UT,   879.6 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        4.143
N_STARS:         190
X_OFFSET:        333 [pixels]
Y_OFFSET:        293 [pixels]
X_MAX:           1772 [pixels]
Y_MAX:           1732 [pixels]
DET_THRESH:      17
PHOTO_THRESH:    10
SL_URL:          sw00436429000msufc0879.fits
SUN_POSTN:       202.18d {+13h 28m 44s}   -9.30d {-09d 17' 43"}
SUN_DIST:         84.18 [deg]   Sun_angle= -6.0 [hr] (East of Sun)
MOON_POSTN:      323.38d {+21h 33m 30s}  -10.66d {-10d 39' 45"}
MOON_DIST:        37.85 [deg]
MOON_ILLUM:      74 [%]
GAL_COORDS:        3.46,-21.75 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      287.83,-13.02 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 17 Oct 10 10:37:56 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     436429,   Seg_Num: 0
POINT_RA:        291.401d {+19h 25m 36s} (J2000)
POINT_DEC:       -35.146d {-35d 08' 44"} (J2000)
POINT_ROLL:      262.803d
IMG_START_DATE:  15486 TJD;   290 DOY;   10/10/17
IMG_START_TIME:  38056.36 SOD {10:34:16.36} UT,   88.9 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        4.211
N_STARS:         190
X_OFFSET:        632 [pixels]
Y_OFFSET:        536 [pixels]
X_MAX:           1591 [pixels]
Y_MAX:           1495 [pixels]
DET_THRESH:      17
PHOTO_THRESH:    10
SL_URL:          sw00436429000msufc0088.fits
SUN_POSTN:       202.17d {+13h 28m 41s}   -9.29d {-09d 17' 28"}
SUN_DIST:         84.19 [deg]   Sun_angle= -6.0 [hr] (East of Sun)
MOON_POSTN:      323.25d {+21h 33m 01s}  -10.71d {-10d 42' 41"}
MOON_DIST:        37.73 [deg]
MOON_ILLUM:      74 [%]
GAL_COORDS:        3.46,-21.75 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      287.83,-13.02 [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:     Sun 17 Oct 10 10:36:40 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     436429,   Seg_Num: 0
GRB_RA:          291.378d {+19h 25m 31s} (J2000),
                 291.555d {+19h 26m 13s} (current),
                 290.554d {+19h 22m 13s} (1950)
GRB_DEC:         -35.141d {-35d 08' 26"} (J2000),
                 -35.119d {-35d 07' 07"} (current),
                 -35.241d {-35d 14' 25"} (1950)
GRB_DATE:        15486 TJD;   290 DOY;   10/10/17
GRB_TIME:        37967.41 SOD {10:32:47.41} UT
TRIGGER_INDEX:   148
GRB_PHI:         -48.54 [deg]
GRB_THETA:        36.61 [deg]
DELTA_TIME:      71.00 [sec]
TRIGGER_DUR:     1.024 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     95.75 [sigma]
IMAGE_SIGNIF:    20.22 [sigma]
LC_URL:          sw00436429000msb.lc
SUN_POSTN:       202.17d {+13h 28m 41s}   -9.29d {-09d 17' 27"}
SUN_DIST:         84.17 [deg]   Sun_angle= -6.0 [hr] (East of Sun)
MOON_POSTN:      323.24d {+21h 32m 58s}  -10.72d {-10d 42' 56"}
MOON_DIST:        37.74 [deg]
MOON_ILLUM:      74 [%]
GAL_COORDS:        3.46,-21.73 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      287.81,-13.01 [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 = 90.18,-0.62 [deg].

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 17 Oct 10 10:34:47 UT
NOTICE_TYPE:     Swift-XRT Image
TRIGGER_NUM:     436429,   Seg_Num: 0
GRB_RA:          291.3865d {+19h 25m 32.7s} (J2000),
                 291.5641d {+19h 26m 15.3s} (current),
                 290.5626d {+19h 22m 15.0s} (1950)
GRB_DEC:         -35.1451d {-35d 08' 42.3"} (J2000),
                 -35.1231d {-35d 07' 23.1"} (current),
                 -35.2448d {-35d 14' 41.1"} (1950)
GRB_ERROR:       4.7 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       176 [cnts]
IMG_START_DATE:  15486 TJD;   290 DOY;   10/10/17
IMG_START_TIME:  38048.38 SOD {10:34:08.38} UT,   81.0 [sec] since BAT Trigger Time
CENTROID_X:      284.39,  raw= 284  [pixels]
CENTROID_Y:      293.57,  raw= 294  [pixels]
ROLL:            262.80 [deg]
GAIN:            4
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   -10.42
GRB_POS_XRT_Z:   -42.20
IMAGE_URL:       sw00436429000msxps_rw.img
SUN_POSTN:       202.17d {+13h 28m 41s}   -9.29d {-09d 17' 25"}
SUN_DIST:         84.18 [deg]   Sun_angle= -6.0 [hr] (East of Sun)
MOON_POSTN:      323.23d {+21h 32m 55s}  -10.72d {-10d 43' 17"}
MOON_DIST:        37.72 [deg]
MOON_ILLUM:      74 [%]
GAL_COORDS:        3.46,-21.74 [deg] galactic lon,lat of the burst
ECL_COORDS:      287.82,-13.02 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 17 Oct 10 10:34:37 UT
NOTICE_TYPE:     Swift-XRT Position
TRIGGER_NUM:     436429,   Seg_Num: 0
GRB_RA:          291.3865d {+19h 25m 32.76s} (J2000),
                 291.5641d {+19h 26m 15.39s} (current),
                 290.5626d {+19h 22m 15.03s} (1950)
GRB_DEC:         -35.1451d {-35d 08' 42.3"} (J2000),
                 -35.1231d {-35d 07' 23.1"} (current),
                 -35.2448d {-35d 14' 41.1"} (1950)
GRB_ERROR:       4.7 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       8.79e-09 [erg/cm2/sec]
GRB_SIGNIF:      13.26 [sigma]
IMG_START_DATE:  15486 TJD;   290 DOY;   10/10/17
IMG_START_TIME:  38048.38 SOD {10:34:08.38} UT,   81.0 [sec] since BAT Trigger Time
TAM[0-3]:        327.66 237.25 261.64 243.43
AMPLIFIER:       2
WAVEFORM:        134
SUN_POSTN:       202.17d {+13h 28m 41s}   -9.29d {-09d 17' 25"}
SUN_DIST:         84.18 [deg]   Sun_angle= -6.0 [hr] (East of Sun)
MOON_POSTN:      323.23d {+21h 32m 55s}  -10.72d {-10d 43' 18"}
MOON_DIST:        37.72 [deg]
MOON_ILLUM:      74 [%]
GAL_COORDS:        3.46,-21.74 [deg] galactic lon,lat of the burst
ECL_COORDS:      287.82,-13.02 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.  
COMMENTS:        The XRT position is 0.49 arcmin from the BAT position.  
COMMENTS:        The object found at this position is either a very bright burst or a cosmic ray hit.  
COMMENTS:        Examine the XRT Image to differentiate (CRs are much more compact); see examples at:  
COMMENTS:        http://www.swift.psu.edu/xrt/XRT_Postage_Stamp_Image_Photo_Gallery.htm .

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 17 Oct 10 10:34:53 UT
NOTICE_TYPE:     Swift-XRT Processed Image
TRIGGER_NUM:     436429,   Seg_Num: 0
GRB_RA:          291.3865d {+19h 25m 32.7s} (J2000),
                 291.5641d {+19h 26m 15.3s} (current),
                 290.5626d {+19h 22m 15.0s} (1950)
GRB_DEC:         -35.1451d {-35d 08' 42.3"} (J2000),
                 -35.1231d {-35d 07' 23.1"} (current),
                 -35.2448d {-35d 14' 41.1"} (1950)
GRB_ERROR:       4.7 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       176 [cnts]
IMG_START_DATE:  15486 TJD;   290 DOY;   10/10/17
IMG_START_TIME:  38048.38 SOD {10:34:08.38} UT,   81.0 [sec] since BAT Trigger Time
CENTROID_X:      284.39,  raw= 284  [pixels]
CENTROID_Y:      293.57,  raw= 294  [pixels]
ROLL:            262.80 [deg]
GAIN:            4
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   -10.42
GRB_POS_XRT_Z:   -42.20
IMAGE_URL:       sw00436429000msxps_rw.img
SUN_POSTN:       202.17d {+13h 28m 41s}   -9.29d {-09d 17' 25"}
SUN_DIST:         84.18 [deg]   Sun_angle= -6.0 [hr] (East of Sun)
MOON_POSTN:      323.23d {+21h 32m 55s}  -10.72d {-10d 43' 15"}
MOON_DIST:        37.72 [deg]
MOON_ILLUM:      74 [%]
GAL_COORDS:        3.46,-21.74 [deg] galactic lon,lat of the burst
ECL_COORDS:      287.82,-13.02 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Processed Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 17 Oct 10 10:54:10 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     436429,   Seg_Num: 0
POINT_RA:        291.403d {+19h 25m 37s} (J2000)
POINT_DEC:       -35.147d {-35d 08' 49"} (J2000)
POINT_ROLL:      262.800d
IMG_START_DATE:  15486 TJD;   290 DOY;   10/10/17
IMG_START_TIME:  38847.04 SOD {10:47:27.04} UT,   879.6 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        4.143
N_STARS:         190
X_OFFSET:        333 [pixels]
Y_OFFSET:        293 [pixels]
X_MAX:           1772 [pixels]
Y_MAX:           1732 [pixels]
DET_THRESH:      17
PHOTO_THRESH:    10
SL_URL:          sw00436429000msufc0879.fits
SUN_POSTN:       202.18d {+13h 28m 44s}   -9.30d {-09d 17' 43"}
SUN_DIST:         84.18 [deg]   Sun_angle= -6.0 [hr] (East of Sun)
MOON_POSTN:      323.38d {+21h 33m 31s}  -10.66d {-10d 39' 41"}
MOON_DIST:        37.85 [deg]
MOON_ILLUM:      74 [%]
GAL_COORDS:        3.46,-21.75 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      287.83,-13.02 [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:     Sun 17 Oct 10 10:39:27 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     436429,   Seg_Num: 0
POINT_RA:        291.401d {+19h 25m 36s} (J2000)
POINT_DEC:       -35.146d {-35d 08' 44"} (J2000)
ROLL:            262.803d
IMG_START_DATE:  15486 TJD;   290 DOY;   10/10/17
IMG_START_TIME:  38056.36 SOD {10:34:16.36} UT,   88.9 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     309004462
X_OFFSET:        893 [pixels]
Y_OFFSET:        853 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1053
Y_GRB_POS:       1013
BINNING_INDEX:   1
IM_URL:          sw00436429000msuni0095.fits
SUN_POSTN:       202.17d {+13h 28m 42s}   -9.29d {-09d 17' 30"}
SUN_DIST:         84.19 [deg]   Sun_angle= -6.0 [hr] (East of Sun)
MOON_POSTN:      323.27d {+21h 33m 04s}  -10.71d {-10d 42' 25"}
MOON_DIST:        37.74 [deg]
MOON_ILLUM:      74 [%]
GAL_COORDS:        3.46,-21.75 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      287.83,-13.02 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Image.  
COMMENTS:        The GRB Position came from the XRT Position Command.  
COMMENTS:        The image has 2x2 binning (compression).  
COMMENTS:        All 4 attachments are included.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 17 Oct 10 10:47:31 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     436429,   Seg_Num: 0
POINT_RA:        291.403d {+19h 25m 37s} (J2000)
POINT_DEC:       -35.147d {-35d 08' 49"} (J2000)
ROLL:            262.801d
IMG_START_DATE:  15486 TJD;   290 DOY;   10/10/17
IMG_START_TIME:  38268.54 SOD {10:37:48.54} UT,   301.1 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     309004674
X_OFFSET:        893 [pixels]
Y_OFFSET:        853 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1053
Y_GRB_POS:       1013
BINNING_INDEX:   1
IM_URL:          sw00436429000msuni0308.fits
SUN_POSTN:       202.18d {+13h 28m 43s}   -9.29d {-09d 17' 37"}
SUN_DIST:         84.18 [deg]   Sun_angle= -6.0 [hr] (East of Sun)
MOON_POSTN:      323.33d {+21h 33m 19s}  -10.68d {-10d 40' 55"}
MOON_DIST:        37.80 [deg]
MOON_ILLUM:      74 [%]
GAL_COORDS:        3.46,-21.75 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      287.83,-13.02 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Image.  
COMMENTS:        The GRB Position came from the XRT Position Command.  
COMMENTS:        The image has 2x2 binning (compression).

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 17 Oct 10 10:46:15 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     436429,   Seg_Num: 0
POINT_RA:        291.403d {+19h 25m 37s} (J2000)
POINT_DEC:       -35.147d {-35d 08' 49"} (J2000)
POINT_ROLL:      262.801d
IMG_START_DATE:  15486 TJD;   290 DOY;   10/10/17
IMG_START_TIME:  38268.54 SOD {10:37:48.54} UT,   301.1 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        1.185
N_STARS:         123
X_OFFSET:        573 [pixels]
Y_OFFSET:        533 [pixels]
X_MAX:           1532 [pixels]
Y_MAX:           1492 [pixels]
DET_THRESH:      9
PHOTO_THRESH:    4
SL_URL:          sw00436429000msufc0301.fits
SUN_POSTN:       202.18d {+13h 28m 43s}   -9.29d {-09d 17' 36"}
SUN_DIST:         84.18 [deg]   Sun_angle= -6.0 [hr] (East of Sun)
MOON_POSTN:      323.32d {+21h 33m 16s}  -10.69d {-10d 41' 09"}
MOON_DIST:        37.79 [deg]
MOON_ILLUM:      74 [%]
GAL_COORDS:        3.46,-21.75 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      287.83,-13.02 [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:     Sun 17 Oct 10 10:39:03 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     436429,   Seg_Num: 0
POINT_RA:        291.401d {+19h 25m 36s} (J2000)
POINT_DEC:       -35.146d {-35d 08' 44"} (J2000)
ROLL:            262.803d
IMG_START_DATE:  15486 TJD;   290 DOY;   10/10/17
IMG_START_TIME:  38056.36 SOD {10:34:16.36} UT,   88.9 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     309004462
X_OFFSET:        893 [pixels]
Y_OFFSET:        853 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1053
Y_GRB_POS:       1013
BINNING_INDEX:   1
IM_URL:          sw00436429000msuni0095.fits
SUN_POSTN:       202.17d {+13h 28m 42s}   -9.29d {-09d 17' 29"}
SUN_DIST:         84.19 [deg]   Sun_angle= -6.0 [hr] (East of Sun)
MOON_POSTN:      323.26d {+21h 33m 03s}  -10.71d {-10d 42' 29"}
MOON_DIST:        37.74 [deg]
MOON_ILLUM:      74 [%]
GAL_COORDS:        3.46,-21.75 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      287.83,-13.02 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Image.  
COMMENTS:        The GRB Position came from the XRT Position Command.  
COMMENTS:        The image has 2x2 binning (compression).

GCN Circular #11346
S. B. Pandey (U Mich), report on behalf of the ROTSE collaboration:
ROTSE-IIIa, located at Siding Spring Observatory, Australia, responded to GRB 101017A (Swift trigger 436429; M. H. Siegel et al. GCN 11345), producing images soon after the GCN notice time. We took 10 5-sec, 10 20-sec and 20 60-sec exposures. These unfiltered images are calibrated relative to USNO A2.0 (R).
Comparison to the DSS (second epoch) reveals no new sources within the 3-sigma Swift/BAT error circle or at the UVOT position, for both single images and coadding into sets of 10. Individual images have limiting magnitudes ranging from 15.6-16.4; we set the following specific limits.
```
start UT       end UT      t_exp(s)   mlim   t_start-tGRB(s)  Coadd?
--------------------------------------------------------------------
10:34:55.2   10:35:15.2        20     16.4          127.8       N
10:37:49.3   10:42:31.6       282     17.5          301.9       Y
```
GCN Circular #11347
D. M. Palmer (LANL), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), J. R. Cummings (GSFC/UMBC), E. E. Fenimore (LANL), N. Gehrels (GSFC), H. A. Krimm (GSFC/USRA), C. B. Markwardt (GSFC), A. M. Parsons (GSFC), T. Sakamoto (GSFC/UMBC), G. Sato (ISAS), M. H. Siegel (PSU), M. Stamatikos (OSU), J. Tueller (GSFC), T. N. Ukwatta (GWU) (i.e. the Swift-BAT team):
Using the data set from T-60 to T+240 sec from the recent telemetry downlink, we report further analysis of BAT GRB 101017A (trigger #436429) (Siegel, et al., GCN Circ. 11345). The BAT ground-calculated position is RA, Dec = 291.377, -35.141 deg which is
```
    RA(J2000)  =  19h 25m 30.5s
    Dec(J2000) = -35d 08' 25.9"
```
with an uncertainty of 1.0 arcmin, (radius, sys+stat, 90% containment). The partial coding was 43%.
The mask-weighted light curve resembles an overall FRED-like profile, starting at T-5 sec, peaking at T+2 sec, but with multiple shorter spikes superimposed. An extended tail is detectable out to at least T+160 sec. T90 (15-350 keV) is 70.0 +- 3.0 sec (estimated error including systematics).
The time-averaged spectrum from T-5.5 to T+111 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.45 +- 0.03. The fluence in the 15-150 keV band is 1.8 +- 0.1 x 10^-5 erg/cm2. The 1-sec peak photon flux measured from T+2.58 sec in the 15-150 keV band is 9.4 +- 0.4 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/436429/BA/
GCN Circular #11348
M.R. Goad, J.P. Osborne, A.P. Beardmore and P.A. Evans (U. Leicester) report on behalf of the Swift-XRT team.
Using 1922 s of XRT Photon Counting mode data and 1 UVOT images for GRB 101017A, 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 = 291.38586, -35.14514 which is equivalent to:
```
RA (J2000): 19h 25m 32.61s
Dec (J2000): -35d 08' 42.5"
```
with an uncertainty of 2.6 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 #11350
S. Golenetskii, R.Aptekar, D. Frederiks, E. Mazets, V. Pal'shin, P. Oleynik, M. Ulanov, D. Svinkin, and T. Cline on behalf of the Konus-Wind team, report:
The long GRB 101017A, (Swift/BAT trigger=436429: Siegel et.al, GCN 11345; Palmer et.al, GCN 11347) triggered Konus-Wind at T0=3D37961.692s UT (10:32:41.692)
The burst light curve shows a jagged FRED-like structure with a total duration of ~45 s. The emission is seen up to 2 MeV. The Konus-Wind light curve of this GRB is available at http://www.ioffe.ru/LEA/GRBs/GRB101017_T37961/
As observed by Konus-Wind the burst had a fluence of (6.7 =B1 0.4)x10-5 erg/cm2, and a 256-ms peak flux measured from T0+5.632s of (7.0 =B1 0.9)x10-6 erg/cm2/s (both in the 20 keV - 2 MeV energy range).
The time-integrated spectrum of the burst (from T0 to T0+40.448 s) is best fit in the 20 keV - 2 MeV range by a power law with exponential cutoff model, for which alpha =3D -1.18 =B1 0.06, and Ep =3D 600(-45, +52) keV (chi2 =3D 66/58 dof).
The spectrum at the maximum count rate (measured from T0+0.256 to T0+7.680 s) is best fit in the 20 keV - 2 MeV range by a power law with exponential cutoff model, for which alpha =3D -0.9 =B1 0.1, and Ep =3D 742(-90, +113) keV (chi2 =3D 62/58 dof).
All the quoted results are preliminary. All the quoted errors are at the 90% confidence level.
GCN Circular #11351
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 101017A (Siegel et al., GCN 11345) 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 2010-10-17 10:33:28 UT (~41 sec after the burst). We did not find any new point source within the enhanced XRT error circle (Goad et al., GCNC 11348) 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
------------------------------------------------------
0.01517    10:54:37  1800.0     >17.6  >17.9  >17.6
------------------------------------------------------
T0+ : Elapsed time after the burst [day]
T-EXP: Total Exposure time [sec]
```

GCN Circular #11354
M. H. Siegel (PSU) reports on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 101017A 88s after the BAT trigger (Siegel et al., GCN Circ. 11345). The source reported by Siegel et al. is confirmed in the u and white filters but has not been detected since the first orbit.
The 3-sigma upper limits for the finding chart (fc) and summed exposures are reported below:

FILTER     T_start(s)  T_stop    Exposure     Mag/3uL
========================================================
white (fc)     88        238      147       19.85+-0.22
white          88       1724      409       20.09+-0.17
white        5660       7296      393         >21.03
v             630       1773      136         >18.81
v            6071      11723     1158         >19.93
b             556       1699      116         >19.66
b            5456       7091      393         >20.30
u             301        550      245       19.15+-0.23
u             301       1675      343       19.22+-0.20
u            5250       6886      393         >19.94
uvw1          679       1648      116         >19.22
uvw1         5046      13365     1112         >20.60
uvm2          654       1797      116         >19.08
uvm2         6276      12628     1082         >20.63
uvw2          605       1749      136         >19.52
uvw2         5866       7502      393         >20.22
=======================================================

The above magnitudes are not corrected for the Galactic extinction corresponding to a reddening of E_{B-V} = 0.17 (Schlegel et al., 1998, ApJS, 500, 525). The photometry is on the UVOT photometric system described in Poole et al. (2008, MNRAS, 383, 627).

GCN Circular #11355
D. Grupe and M. Siegel (PSU) report on behalf of the Swift-XRT team:
We have analyzed 21.8 ks of XRT data for GRB 101017A (Siegel et al. GCN Circ. 11345), from 87 s to 82800 s after the BAT trigger. The data comprise 210 s in Windowed Timing (WT) mode with the remainder in Photon Counting (PC) mode. The light curve can be modeled with a multiple broken power-law model. After an initial decay slope of 2.22+/-0.08 the light curve steepens at T_break=260+40-20 s with a slope of 3.85+1.13-0.34 and flattens again at T+527+52-69 s with a decay slope of 1.35+/-0.08.
A spectrum formed from the WT mode data can be fitted with an absorbed power-law with a photon spectral index of 1.38+/-0.06 and an absorption column density of 20.85+2.48-2.31 x 10^20 cm^-2 which is in excess of the Galactic column density of 7.69 x 10^20 cm^-2 (Kalberla et al. 2005). A fit to the pc mode data shows that the spectrum has steepened with a photon spectral index of 2.08+/-0.20. The absorption column density of this fit is consistent with the result from the WT data. The counts to 0.3-10 keV flux conversion factor deduced from the WT spectrum is 6.63 x 10^-11 and 7.70 x 10^-11 erg cm^-2 count^-1 for the observed and the absorption corrected count rates. For the pc mode we found conversion factors are 5.00 x 10^-11 and 7.57 x 10^-11 ergs cm^-2 counts^-1, respectively.
If the light curve continues to decay with a power-law decay index of 1.35, the count rate at T+48 hours will be in the order of 3 x 10^-4 count s^-1, corresponding to an observed (unabsorbed) 0.3-10 keV flux of 1.5 x 10^-14 (2.3 x 10^-14) erg cm^-2 s^-1.
The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00436429.
This circular is an official product of the Swift-XRT team.
GCN Circular #11356
K. Motohara, T. Tanabe, S. Koshida, T. Morokuma, T. Minezaki, and Y. Yoshii (University of Tokyo) report on behalf of the TAO project team:
We observed GRB 101017A (Siegel et al., GCN 11345) with the near-infrared camera ANIR mounted on the miniTAO 1.0m telescope at the University of Tokyo Atacama Observatory on the summit of Co. Chajnantor (5640 m altitude) in the northern Chile.
The J- and Ks-band observations started from 2010-10-18 00:37 UT (14hours after the burst), and total exposure time was 300sec for each band. No object was detected within the enhanced XRT error circle (Goad et al., GCNC 11348).
Three sigma upper limits are listed below, where the flux calibrations were carried out using 2MASS stars within the FoV.
```
Band    Mid-UT    AB-Mag
----------------------------
Ks      00:40:25  >19.3
J       00:46:51  >19.9
----------------------------
```
GCN Report 307.1
GCN_Report 307.1 has been posted: http://gcn.gsfc.nasa.gov/reports/report_307_1.pdf by M.H. Siegel at PSU titled: "Final report on Swift Observations of GRB 101017A"

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Jochen Greiner, last update: 10-Dec-2010 [Disclaimer]