Gamma-ray Burst 140619A

(All information courtesy of the instrument teams.)

Previous IAU Circulars

none

Results of Observations

GCN/BACODINE POSITION NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 19 Jun 14 11:39:52 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     602080,   Seg_Num: 0
GRB_RA:           27.092d {+01h 48m 22s} (J2000),
                  27.248d {+01h 48m 59s} (current),
                  26.555d {+01h 46m 13s} (1950)
GRB_DEC:         -39.261d {-39d 15' 40"} (J2000),
                 -39.190d {-39d 11' 22"} (current),
                 -39.510d {-39d 30' 34"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=943 [image_cnts]
TRIGGER_DUR:     64.000 [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:        16827 TJD;   170 DOY;   14/06/19
GRB_TIME:        41915.84 SOD {11:38:35.84} UT
GRB_PHI:          37.33 [deg]
GRB_THETA:        34.16 [deg]
SOLN_STATUS:     0x13
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    7.08 [sigma]
MERIT_PARAMS:     +1  +0  +0  +6  +1  -3  +0  +0  -9  +0 
SUN_POSTN:        87.96d {+05h 51m 50s}  +23.42d {+23d 25' 25"}
SUN_DIST:         84.45 [deg]   Sun_angle= 4.0 [hr] (West of Sun)
MOON_POSTN:      353.66d {+23h 34m 39s}   +0.33d {+00d 19' 31"}
MOON_DIST:        50.05 [deg]
MOON_ILLUM:      54 [%]
GAL_COORDS:      262.19,-73.04 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:        5.95,-46.13 [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 = 291.71,2.48 [deg].

red DSS finding chart ps-file

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 19 Jun 14 11:41:27 UT
NOTICE_TYPE:     Swift-XRT Position
TRIGGER_NUM:     602080,   Seg_Num: 0
GRB_RA:           27.1084d {+01h 48m 26.01s} (J2000),
                  27.2637d {+01h 49m 03.28s} (current),
                  26.5711d {+01h 46m 17.05s} (1950)
GRB_DEC:         -39.2586d {-39d 15' 30.9"} (J2000),
                 -39.1870d {-39d 11' 13.0"} (current),
                 -39.5070d {-39d 30' 25.2"} (1950)
GRB_ERROR:       4.8 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       5.85e-09 [erg/cm2/sec]
GRB_SIGNIF:      12.56 [sigma]
IMG_START_DATE:  16827 TJD;   170 DOY;   14/06/19
IMG_START_TIME:  42054.93 SOD {11:40:54.93} UT,   139.1 [sec] since BAT Trigger Time
TAM[0-3]:        327.68 237.21 261.47 243.71
AMPLIFIER:       2
WAVEFORM:        134
SUN_POSTN:        87.96d {+05h 51m 50s}  +23.42d {+23d 25' 25"}
SUN_DIST:         84.44 [deg]   Sun_angle= 4.0 [hr] (West of Sun)
MOON_POSTN:      353.68d {+23h 34m 43s}   +0.33d {+00d 19' 49"}
MOON_DIST:        50.06 [deg]
MOON_ILLUM:      54 [%]
GAL_COORDS:      262.16,-73.03 [deg] galactic lon,lat of the burst
ECL_COORDS:        5.96,-46.13 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.  
COMMENTS:        The XRT position is 0.76 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:     Thu 19 Jun 14 11:41:38 UT
NOTICE_TYPE:     Swift-XRT Image
TRIGGER_NUM:     602080,   Seg_Num: 0
GRB_RA:           27.1084d {+01h 48m 26.0s} (J2000),
                  27.2637d {+01h 49m 03.2s} (current),
                  26.5711d {+01h 46m 17.0s} (1950)
GRB_DEC:         -39.2586d {-39d 15' 30.9"} (J2000),
                 -39.1870d {-39d 11' 13.0"} (current),
                 -39.5070d {-39d 30' 25.2"} (1950)
GRB_ERROR:       4.7 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       158 [cnts]
IMG_START_DATE:  16827 TJD;   170 DOY;   14/06/19
IMG_START_TIME:  42054.93 SOD {11:40:54.93} UT,   139.1 [sec] since BAT Trigger Time
CENTROID_X:      319.71,  raw= 320  [pixels]
CENTROID_Y:      289.93,  raw= 290  [pixels]
ROLL:            53.63 [deg]
GAIN:            2
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   -18.53
GRB_POS_XRT_Z:   33.97
IMAGE_URL:       sw00602080000msxps_rw.img
SUN_POSTN:        87.96d {+05h 51m 50s}  +23.42d {+23d 25' 25"}
SUN_DIST:         84.44 [deg]   Sun_angle= 4.0 [hr] (West of Sun)
MOON_POSTN:      353.68d {+23h 34m 43s}   +0.33d {+00d 19' 51"}
MOON_DIST:        50.06 [deg]
MOON_ILLUM:      54 [%]
GAL_COORDS:      262.16,-73.03 [deg] galactic lon,lat of the burst
ECL_COORDS:        5.96,-46.13 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Image.  
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:     Thu 19 Jun 14 11:41:52 UT
NOTICE_TYPE:     Swift-XRT Processed Image
TRIGGER_NUM:     602080,   Seg_Num: 0
GRB_RA:           27.1084d {+01h 48m 26.0s} (J2000),
                  27.2637d {+01h 49m 03.2s} (current),
                  26.5711d {+01h 46m 17.0s} (1950)
GRB_DEC:         -39.2586d {-39d 15' 30.9"} (J2000),
                 -39.1870d {-39d 11' 13.0"} (current),
                 -39.5070d {-39d 30' 25.2"} (1950)
GRB_ERROR:       4.7 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       158 [cnts]
IMG_START_DATE:  16827 TJD;   170 DOY;   14/06/19
IMG_START_TIME:  42054.93 SOD {11:40:54.93} UT,   139.1 [sec] since BAT Trigger Time
CENTROID_X:      319.71,  raw= 320  [pixels]
CENTROID_Y:      289.93,  raw= 290  [pixels]
ROLL:            53.63 [deg]
GAIN:            2
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   -18.53
GRB_POS_XRT_Z:   33.97
IMAGE_URL:       sw00602080000msxps_rw.img
SUN_POSTN:        87.96d {+05h 51m 50s}  +23.42d {+23d 25' 25"}
SUN_DIST:         84.44 [deg]   Sun_angle= 4.0 [hr] (West of Sun)
MOON_POSTN:      353.68d {+23h 34m 44s}   +0.33d {+00d 19' 53"}
MOON_DIST:        50.05 [deg]
MOON_ILLUM:      54 [%]
GAL_COORDS:      262.16,-73.03 [deg] galactic lon,lat of the burst
ECL_COORDS:        5.96,-46.13 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Processed Image.  
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:     Thu 19 Jun 14 11:42:39 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     602080,   Seg_Num: 0
GRB_RA:           27.092d {+01h 48m 22s} (J2000),
                  27.248d {+01h 48m 59s} (current),
                  26.555d {+01h 46m 13s} (1950)
GRB_DEC:         -39.261d {-39d 15' 40"} (J2000),
                 -39.190d {-39d 11' 22"} (current),
                 -39.510d {-39d 30' 34"} (1950)
GRB_DATE:        16827 TJD;   170 DOY;   14/06/19
GRB_TIME:        41915.84 SOD {11:38:35.84} UT
TRIGGER_INDEX:   20000
GRB_PHI:          37.33 [deg]
GRB_THETA:        34.16 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     64.000 [sec] 
SOLN_STATUS:     0x13
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    7.08 [sigma]
LC_URL:          sw00602080000msb.lc
SUN_POSTN:        87.96d {+05h 51m 50s}  +23.42d {+23d 25' 25"}
SUN_DIST:         84.45 [deg]   Sun_angle= 4.0 [hr] (West of Sun)
MOON_POSTN:      353.69d {+23h 34m 45s}   +0.33d {+00d 20' 02"}
MOON_DIST:        50.05 [deg]
MOON_ILLUM:      53 [%]
GAL_COORDS:      262.19,-73.04 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:        5.95,-46.13 [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 = 291.71,2.48 [deg].

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 19 Jun 14 11:43:23 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     602080,   Seg_Num: 0
POINT_RA:         27.114d {+01h 48m 27s} (J2000)
POINT_DEC:       -39.249d {-39d 14' 56"} (J2000)
POINT_ROLL:      53.633d
IMG_START_DATE:  16827 TJD;   170 DOY;   14/06/19
IMG_START_TIME:  42063.50 SOD {11:41:03.50} UT,   147.7 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        1.385
N_STARS:         7
X_OFFSET:        344 [pixels]
Y_OFFSET:        640 [pixels]
X_MAX:           1303 [pixels]
Y_MAX:           1599 [pixels]
DET_THRESH:      10
PHOTO_THRESH:    5
SL_URL:          sw00602080000msufc0147.fits
SUN_POSTN:        87.96d {+05h 51m 50s}  +23.42d {+23d 25' 25"}
SUN_DIST:         84.43 [deg]   Sun_angle= 4.0 [hr] (West of Sun)
MOON_POSTN:      353.70d {+23h 34m 47s}   +0.34d {+00d 20' 11"}
MOON_DIST:        50.05 [deg]
MOON_ILLUM:      53 [%]
GAL_COORDS:      262.12,-73.04 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:        5.98,-46.13 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 19 Jun 14 11:44:01 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     602080,   Seg_Num: 0
POINT_RA:         27.114d {+01h 48m 27s} (J2000)
POINT_DEC:       -39.249d {-39d 14' 56"} (J2000)
POINT_ROLL:      53.633d
IMG_START_DATE:  16827 TJD;   170 DOY;   14/06/19
IMG_START_TIME:  42063.50 SOD {11:41:03.50} UT,   147.7 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        1.385
N_STARS:         7
X_OFFSET:        344 [pixels]
Y_OFFSET:        640 [pixels]
X_MAX:           1303 [pixels]
Y_MAX:           1599 [pixels]
DET_THRESH:      10
PHOTO_THRESH:    5
SL_URL:          sw00602080000msufc0147.fits
SUN_POSTN:        87.96d {+05h 51m 50s}  +23.42d {+23d 25' 25"}
SUN_DIST:         84.43 [deg]   Sun_angle= 4.0 [hr] (West of Sun)
MOON_POSTN:      353.70d {+23h 34m 48s}   +0.34d {+00d 20' 18"}
MOON_DIST:        50.05 [deg]
MOON_ILLUM:      53 [%]
GAL_COORDS:      262.12,-73.04 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:        5.98,-46.13 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Source List.  
COMMENTS:        If you have elected to receive attachments:  
COMMENTS:        The uvot_catalog_srclist.fits.gz file does not exist; skipping the attachment.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 19 Jun 14 11:44:26 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     602080,   Seg_Num: 0
POINT_RA:         27.114d {+01h 48m 27s} (J2000)
POINT_DEC:       -39.249d {-39d 14' 56"} (J2000)
ROLL:            53.633d
IMG_START_DATE:  16827 TJD;   170 DOY;   14/06/19
IMG_START_TIME:  42063.50 SOD {11:41:03.50} UT,   147.7 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     424870875
X_OFFSET:        750 [pixels]
Y_OFFSET:        952 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       910
Y_GRB_POS:       1112
BINNING_INDEX:   1
IM_URL:          sw00602080000msuni0160.fits
SUN_POSTN:        87.96d {+05h 51m 50s}  +23.42d {+23d 25' 25"}
SUN_DIST:         84.43 [deg]   Sun_angle= 4.0 [hr] (West of Sun)
MOON_POSTN:      353.71d {+23h 34m 49s}   +0.34d {+00d 20' 23"}
MOON_DIST:        50.04 [deg]
MOON_ILLUM:      53 [%]
GAL_COORDS:      262.12,-73.04 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:        5.98,-46.13 [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:     Thu 19 Jun 14 11:44:42 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     602080,   Seg_Num: 0
POINT_RA:         27.114d {+01h 48m 27s} (J2000)
POINT_DEC:       -39.249d {-39d 14' 56"} (J2000)
ROLL:            53.633d
IMG_START_DATE:  16827 TJD;   170 DOY;   14/06/19
IMG_START_TIME:  42063.50 SOD {11:41:03.50} UT,   147.7 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     424870875
X_OFFSET:        750 [pixels]
Y_OFFSET:        952 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       910
Y_GRB_POS:       1112
BINNING_INDEX:   1
IM_URL:          sw00602080000msuni0160.fits
SUN_POSTN:        87.96d {+05h 51m 50s}  +23.42d {+23d 25' 25"}
SUN_DIST:         84.43 [deg]   Sun_angle= 4.0 [hr] (West of Sun)
MOON_POSTN:      353.71d {+23h 34m 50s}   +0.34d {+00d 20' 26"}
MOON_DIST:        50.04 [deg]
MOON_ILLUM:      53 [%]
GAL_COORDS:      262.12,-73.04 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:        5.98,-46.13 [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:        If you have elected to receive attachments:  
COMMENTS:        The uvot_catalog_image.fits.gz file does not exist; skipping the attachment.

GCN Circular #16415
M. De Pasquale (INAF-IASFPA), D. N. Burrows (PSU), S. B. Cenko (GSFC), J. A. Kennea (PSU), H. A. Krimm (CRESST/GSFC/USRA), N. P. M. Kuin (UCL-MSSL), A. Y. Lien (NASA/GSFC/ORAU), F. E. Marshall (NASA/GSFC), A. Maselli (INAF-IASFPA), K. L. Page (U Leicester), B. Sbarufatti (INAF-OAB/PSU) and T. N. Ukwatta (MSU) report on behalf of the Swift Team:
At 11:38:35 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 140619A (trigger=602080). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 27.092, -39.261 which is
```
   RA(J2000) = 01h 48m 22s
   Dec(J2000) = -39d 15' 40"
```
with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). As is usual with an image trigger, the available BAT light curve shows no significant structure.
The XRT began observing the field at 11:40:54.9 UT, 139.1 seconds after the BAT trigger. XRT found a bright, uncatalogued X-ray source located at RA, Dec 27.1084, -39.2586 which is equivalent to:
```
   RA(J2000)  = +01h 48m 26.02s
   Dec(J2000) = -39d 15' 31.0"
```
with an uncertainty of 4.8 arcseconds (radius, 90% containment). This location is 46 arcseconds from the BAT onboard position, within the BAT error circle. No event data are yet available to determine the column density using X-ray spectroscopy.
The initial flux in the 2.5 s image was 5.85e-09 erg cm^-2 s^-1 (0.2-10 keV).
UVOT took a finding chart exposure of 98 seconds with the White filter starting 147 seconds after the BAT trigger. There is a weak 20.5 mag source near the XRT position. No aspect UVOT aspect solution is available because of the paucity of stars. Confirmation of the afterglow will require the full data set. No correction has been made for the expected extinction corresponding to E(B-V) of 0.01.
Burst Advocate for this burst is M. De Pasquale (mdp AT ifc.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:     Thu 19 Jun 14 12:30:29 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     602080,   Seg_Num: 0
GRB_RA:           27.1078d {+01h 48m 25.87s} (J2000),
                  27.2631d {+01h 49m 03.14s} (current),
                  26.5705d {+01h 46m 16.91s} (1950)
GRB_DEC:         -39.2593d {-39d 15' 33.4"} (J2000),
                 -39.1877d {-39d 11' 15.6"} (current),
                 -39.5077d {-39d 30' 27.7"} (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:  16827 TJD;   170 DOY;   14/06/19
IMG_START_TIME:  43629.00 SOD {12:07:09.00} UT,   1713.2 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:        87.99d {+05h 51m 58s}  +23.42d {+23d 25' 27"}
SUN_DIST:         84.46 [deg]   Sun_angle= 4.0 [hr] (West of Sun)
MOON_POSTN:      354.13d {+23h 36m 31s}   +0.48d {+00d 29' 05"}
MOON_DIST:        49.93 [deg]
MOON_ILLUM:      53 [%]
GAL_COORDS:      262.16,-73.03 [deg] galactic lon,lat of the burst
ECL_COORDS:        5.96,-46.13 [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:        The probability that this is a serendipitous source in the  
COMMENTS:        SPER window is 0.58% < P(seren) < 1.1%.

GCN Circular #16416
M.R. Goad, J.P. Osborne, A.P. Beardmore and P.A. Evans (U. Leicester) report on behalf of the Swift-XRT team.
Using 2297 s of XRT Photon Counting mode data and 3 UVOT images for GRB 140619A, 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 = 27.10849, -39.25934 which is equivalent to:
```
RA (J2000): 01h 48m 26.04s
Dec (J2000): -39d 15' 33.6"
```
with an uncertainty of 1.8 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 #16417
M.C. Stroh (PSU), D.N. Burrows (PSU), J.A. Kennea (PSU), A.P. Beardmore (U. Leicester), P.A. Evans (U. Leicester), B.P. Gompertz (U. Leicester), P. D'Avanzo (INAF-OAB), V. D'Elia (ASDC), M. de Pasquale (INAF-IASFPA) and M. De Pasquale report on behalf of the Swift-XRT team:
We have analysed 7.3 ks of XRT data for GRB 140619A (De Pasquale et al. GCN Circ. 16415), from 129 s to 30.3 ks after the BAT trigger. The data comprise 112 s in Windowed Timing (WT) mode (the first 9 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 Goad et al. (GCN Circ. 16416).
The late-time light curve (from T0+5.1 ks) can be modelled with a power-law decay with a decay index of alpha=0.93 (+/-0.09).
A spectrum formed from the WT mode data can be fitted with an absorbed power-law with a photon spectral index of 0.67 (+/-0.05). The best-fitting absorption column is 1.9 (+/-0.4) x 10^21 cm^-2, in excess of the Galactic value of 1.6 x 10^20 cm^-2 (Willingale et al. 2013). The PC mode spectrum has a photon index of 2.09 (+0.15, -0.14) and a best-fitting absorption column of 2.5 (+/-0.5) x 10^21 cm^-2. The counts to observed (unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 3.4 x 10^-11 (5.1 x 10^-11) erg cm^-2 count^-1.
A summary of the PC-mode spectrum is thus:
```
Total column:	     2.5 (+/-0.5) x 10^21 cm^-2
Galactic foreground: 1.6 x 10^20 cm^-2
Excess significance: 7.7 sigma
Photon index:	     2.09 (+0.15, -0.14)
```
If the light curve continues to decay with a power-law decay index of 0.93, the count rate at T+24 hours will be 0.031 count s^-1, corresponding to an observed (unabsorbed) 0.3-10 keV flux of 1.1 x 10^-12 (1.6 x 10^-12) erg cm^-2 s^-1.
The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00602080.
This circular is an official product of the Swift-XRT team.
GCN Circular #16418
M. H. Siegel (PSU), F. E. Marshall (NASA/GSFC), J. Linevsky (PSU), and M. De Pasquale (INAF-IASFPA) report on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 140619A 147 s after the BAT trigger (De Pasquale et al., GCN Circ. 16415). We confirm a faint afterglow consistent with the XRT position is detected= in the initial UVOT exposures. We have corrected the positions in the 2.7' x 2.7= =92 UVOT sub-image by comparing positions with the Digital Sky Survey. The UVOT afterglow is located at:
```
  RA  (J2000) =3D  01:48:26.15 =3D  27.10896 (deg.)
  Dec (J2000) =3D -39:15:32.6  =3D -39.25906 (deg.)
```
with an estimated uncertainty of 1.0 arc sec. (radius, 90% confidence).
Preliminary detections and 3-sigma upper limits using the UVOT photometric system (Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the first finding chart (FC) exposure and subsequent exposures are:
```
Filter      T_start(s)   T_stop(s)   Exp(s)     Mag

white (fc)     147          245        96     20.39+-0.24
white         5112         5312       196     >21.05
b            11745        12179       422     >20.65
u            10833        11740       885     >20.82
uvw1          5933         6133       196     >19.77
uvm2          5727         5927       196     >19.59
uvw2          5317         5517       196     >19.87
```
The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) =3D 0.01 in the direction of the burst (Schlegel et al. 1998).
GCN Circular #16423
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), A. Y. Lien (NASA/UMBC), C. B. Markwardt (GSFC), M. De Pasquale (INAF-IASFPA) 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+421 sec from the recent telemetry downlink, we report further analysis of BAT GRB 140619A (trigger #602080) (De Pasquale, et al., GCN Circ. 16415). The BAT ground-calculated position is RA, Dec = 27.096, -39.249 deg which is
```
   RA(J2000)  =  01h 48m 23.2s
   Dec(J2000) = -39d 14' 57.1"
```
with an uncertainty of 1.8 arcmin, (radius, sys+stat, 90% containment). The partial coding was 41%.
The mask-weighted light curve shows a complex structure with multiple peaks. The main visible structure starts with roughly two long weaker pulses from ~T+20 s to T+150 s. The two weak pulses were followed by the major bright structure lasting until ~T+260 s, and it consists of many sub-pulses. Afterward there is another weaker long pulse lasting until ~T+350 s. T90 (15-350 keV) is 233.9 +- 13.4 sec (estimated error including systematics).
Note that the main structure of the burst happened at ~150 s after the original image trigger, and was not described in the first circular (De Pasquale, et al., GCN Circ. 16415).
The time-averaged spectrum from T+32.3 to T+340.4 sec is best fit by a power law with an exponential cutoff. This fit gives a photon index 1.45 +- 0.14, and Epeak of 117.8 +- 46.2 keV (chi squared 54.23 for 56 d.o.f.). For this model the total fluence in the 15-150 keV band is 2.1 +- 0.04 x 10^-5 erg/cm2 and the 1-sec peak flux measured from T+219.52 sec in the 15-150 keV band is 4.6 +- 0.2 ph/cm2/sec. A fit to a simple power law gives a photon index of 1.71 +- 0.03 (chi squared 64.34 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/602080/BA/
GCN Circular #16443
S. Golenetskii, R.Aptekar, D. Frederiks, V. Pal'shin, P. Oleynik, M. Ulanov, D. Svinkin, A. Tsvetkova, A. Lyssenko, and T. Cline on behalf of the Konus-Wind team, report:
The long GRB 140619A (Swift-BAT trigger #602080: De Pasquale, et al., GCN Circ. 16415, Palmer, et al., GCN Circ. 16423) was detected by Konus-Wind in the waiting mode.
The burst light curve shows a single multipeak episode started at ~T0(BAT)+35 s with a duration of ~340 s.
The K-W light curve of this burst is available at http://www.ioffe.ru/LEA/GRBs/GRB140619A/
As observed by Konus-Wind, the burst had a fluence of 5.4(-0.5,+0.2)x10^-5 erg/cm2 and a 2.944-s peak energy flux, measured from ~T0(BAT)+191 s, of 1.5(-0.3,+0.2)x10^-6 erg/cm2/s (both in the 20 keV - 10 MeV energy range).
Modeling the K-W 3-channel time-integrated spectrum (from T0(BAT)+35 s to T0(BAT)+374 s) by a power law with exponential cutoff model: dN/dE ~ (E^alpha)*exp(-E*(2+alpha)/Ep) yields alpha =3D -1.3 =C2=B1 0.1, and Ep =3D 236 (-27,+33) keV.
All the quoted errors are estimated at the 1 sigma confidence level. All the presented results are preliminary.

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Jochen Greiner, last update: 23-Jun-2014 [Disclaimer]