Gamma-ray Burst 190701A

(All information courtesy of the instrument teams.)

Previous IAU Circulars

none

Results of Observations

GCN/BACODINE POSITION NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 01 Jul 19 09:46:42 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     912310,   Seg_Num: 0
GRB_RA:           28.063d {+01h 52m 15s} (J2000),
                  28.398d {+01h 53m 35s} (current),
                  27.209d {+01h 48m 50s} (1950)
GRB_DEC:         +58.906d {+58d 54' 23"} (J2000),
                 +59.002d {+59d 00' 07"} (current),
                 +58.660d {+58d 39' 35"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=1183 [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:        18665 TJD;   182 DOY;   19/07/01
GRB_TIME:        35120.83 SOD {09:45:20.83} UT
GRB_PHI:         -67.48 [deg]
GRB_THETA:        32.31 [deg]
SOLN_STATUS:     0x13
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    7.19 [sigma]
MERIT_PARAMS:     +1  +0  +0  +6  +1  -3  +0  +1 -48  +0 
SUN_POSTN:       100.12d {+06h 40m 28s}  +23.11d {+23d 06' 37"}
SUN_DIST:         60.99 [deg]   Sun_angle= 4.8 [hr] (West of Sun)
MOON_POSTN:       80.19d {+05h 20m 46s}  +20.73d {+20d 43' 40"}
MOON_DIST:        53.04 [deg]
MOON_ILLUM:      3 [%]
GAL_COORDS:      130.73, -3.04 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       51.04, 43.55 [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 = 351.66,20.48 [deg].

red DSS finding chart ps-file

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 01 Jul 19 09:47:49 UT
NOTICE_TYPE:     Swift-XRT Nack-Position
TRIGGER_NUM:     912310,   Seg_Num: 0
POINT_RA:         28.042d {+01h 52m 10s} (J2000)
POINT_DEC:       +58.922d {+58d 55' 20"} (J2000)
IMG_START_DATE:  18665 TJD;   182 DOY;   19/07/01
IMG_START_TIME:  35261.91 SOD {09:47:41.91} UT,   141.1 [sec] since BAT Trigger Time
COUNTS:          23    Min_needed= 20
STD_DEV:         29.88   Max_StdDev_for_Good=28.44 [arcsec]
PH2_ITER:        1    Max_iter_allowed= 4
ERROR_CODE:      3
COMMENTS:        SWIFT-XRT Nack Position.  
COMMENTS:        Standard deviation too large.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 01 Jul 19 09:49:22 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     912310,   Seg_Num: 0
GRB_RA:           28.063d {+01h 52m 15s} (J2000),
                  28.398d {+01h 53m 35s} (current),
                  27.209d {+01h 48m 50s} (1950)
GRB_DEC:         +58.906d {+58d 54' 23"} (J2000),
                 +59.002d {+59d 00' 07"} (current),
                 +58.660d {+58d 39' 35"} (1950)
GRB_DATE:        18665 TJD;   182 DOY;   19/07/01
GRB_TIME:        35120.83 SOD {09:45:20.83} UT
TRIGGER_INDEX:   20000
GRB_PHI:         -67.48 [deg]
GRB_THETA:        32.31 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     64.000 [sec] 
SOLN_STATUS:     0x13
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    7.19 [sigma]
LC_URL:          sw00912310000msb.lc
SUN_POSTN:       100.12d {+06h 40m 28s}  +23.11d {+23d 06' 36"}
SUN_DIST:         60.99 [deg]   Sun_angle= 4.8 [hr] (West of Sun)
MOON_POSTN:       80.22d {+05h 20m 53s}  +20.73d {+20d 43' 54"}
MOON_DIST:        53.05 [deg]
MOON_ILLUM:      3 [%]
GAL_COORDS:      130.73, -3.04 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       51.04, 43.55 [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 = 351.66,20.48 [deg].

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 01 Jul 19 09:51:21 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     912310,   Seg_Num: 0
POINT_RA:         28.042d {+01h 52m 10s} (J2000)
POINT_DEC:       +58.922d {+58d 55' 20"} (J2000)
POINT_ROLL:      92.579d
IMG_START_DATE:  18665 TJD;   182 DOY;   19/07/01
IMG_START_TIME:  35265.19 SOD {09:47:45.19} UT,   144.4 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        4.644
N_STARS:         190
X_OFFSET:        626 [pixels]
Y_OFFSET:        611 [pixels]
X_MAX:           1585 [pixels]
Y_MAX:           1570 [pixels]
DET_THRESH:      18
PHOTO_THRESH:    10
SL_URL:          sw00912310000msufc0144.fits
SUN_POSTN:       100.12d {+06h 40m 29s}  +23.11d {+23d 06' 36"}
SUN_DIST:         61.00 [deg]   Sun_angle= 4.8 [hr] (West of Sun)
MOON_POSTN:       80.24d {+05h 20m 57s}  +20.73d {+20d 44' 04"}
MOON_DIST:        53.07 [deg]
MOON_ILLUM:      3 [%]
GAL_COORDS:      130.71, -3.03 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       51.04, 43.57 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 01 Jul 19 09:51:36 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     912310,   Seg_Num: 0
POINT_RA:         28.042d {+01h 52m 10s} (J2000)
POINT_DEC:       +58.922d {+58d 55' 20"} (J2000)
POINT_ROLL:      92.579d
IMG_START_DATE:  18665 TJD;   182 DOY;   19/07/01
IMG_START_TIME:  35265.19 SOD {09:47:45.19} UT,   144.4 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        4.644
N_STARS:         190
X_OFFSET:        626 [pixels]
Y_OFFSET:        611 [pixels]
X_MAX:           1585 [pixels]
Y_MAX:           1570 [pixels]
DET_THRESH:      18
PHOTO_THRESH:    10
SL_URL:          sw00912310000msufc0144.fits
SUN_POSTN:       100.12d {+06h 40m 29s}  +23.11d {+23d 06' 36"}
SUN_DIST:         61.00 [deg]   Sun_angle= 4.8 [hr] (West of Sun)
MOON_POSTN:       80.24d {+05h 20m 58s}  +20.73d {+20d 44' 06"}
MOON_DIST:        53.07 [deg]
MOON_ILLUM:      3 [%]
GAL_COORDS:      130.71, -3.03 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       51.04, 43.57 [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:     Mon 01 Jul 19 09:51:50 UT
NOTICE_TYPE:     Swift-XRT Position
TRIGGER_NUM:     912310,   Seg_Num: 0
GRB_RA:           28.0802d {+01h 52m 19.24s} (J2000),
                  28.4154d {+01h 53m 39.68s} (current),
                  27.2264d {+01h 48m 54.34s} (1950)
GRB_DEC:         +58.9101d {+58d 54' 36.3"} (J2000),
                 +59.0057d {+59d 00' 20.5"} (current),
                 +58.6635d {+58d 39' 48.5"} (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:  18665 TJD;   182 DOY;   19/07/01
IMG_START_TIME:  35277.00 SOD {09:47:57.00} UT,   156.2 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       100.12d {+06h 40m 29s}  +23.11d {+23d 06' 36"}
SUN_DIST:         60.98 [deg]   Sun_angle= 4.8 [hr] (West of Sun)
MOON_POSTN:       80.24d {+05h 20m 59s}  +20.74d {+20d 44' 07"}
MOON_DIST:        53.05 [deg]
MOON_ILLUM:      3 [%]
GAL_COORDS:      130.73, -3.04 [deg] galactic lon,lat of the burst
ECL_COORDS:       51.05, 43.55 [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:     Mon 01 Jul 19 09:53:28 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     912310,   Seg_Num: 0
POINT_RA:         28.042d {+01h 52m 10s} (J2000)
POINT_DEC:       +58.922d {+58d 55' 20"} (J2000)
ROLL:            92.579d
IMG_START_DATE:  18665 TJD;   182 DOY;   19/07/01
IMG_START_TIME:  35265.19 SOD {09:47:45.19} UT,   144.4 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     583667288
X_OFFSET:        945 [pixels]
Y_OFFSET:        930 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1105
Y_GRB_POS:       1090
BINNING_INDEX:   1
IM_URL:          sw00912310000msuni0168.fits
SUN_POSTN:       100.12d {+06h 40m 29s}  +23.11d {+23d 06' 36"}
SUN_DIST:         61.00 [deg]   Sun_angle= 4.8 [hr] (West of Sun)
MOON_POSTN:       80.26d {+05h 21m 03s}  +20.74d {+20d 44' 15"}
MOON_DIST:        53.08 [deg]
MOON_ILLUM:      3 [%]
GAL_COORDS:      130.71, -3.03 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       51.04, 43.57 [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:     Mon 01 Jul 19 09:53:40 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     912310,   Seg_Num: 0
POINT_RA:         28.042d {+01h 52m 10s} (J2000)
POINT_DEC:       +58.922d {+58d 55' 20"} (J2000)
ROLL:            92.579d
IMG_START_DATE:  18665 TJD;   182 DOY;   19/07/01
IMG_START_TIME:  35265.19 SOD {09:47:45.19} UT,   144.4 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     583667288
X_OFFSET:        945 [pixels]
Y_OFFSET:        930 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1105
Y_GRB_POS:       1090
BINNING_INDEX:   1
IM_URL:          sw00912310000msuni0168.fits
SUN_POSTN:       100.12d {+06h 40m 29s}  +23.11d {+23d 06' 36"}
SUN_DIST:         61.00 [deg]   Sun_angle= 4.8 [hr] (West of Sun)
MOON_POSTN:       80.26d {+05h 21m 03s}  +20.74d {+20d 44' 16"}
MOON_DIST:        53.08 [deg]
MOON_ILLUM:      3 [%]
GAL_COORDS:      130.71, -3.03 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       51.04, 43.57 [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 #24934
T. N. Ukwatta (LANL), A. P. Beardmore (U Leicester), N. J. Klingler (PSU), H. A. Krimm (NSF), F. E. Marshall (NASA/GSFC), K. L. Page (U Leicester) and A. Tohuvavohu (PSU) report on behalf of the Neil Gehrels Swift Observatory Team:
At 09:45:20 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 190701A (trigger=912310). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 28.063, +58.906 which is
```
   RA(J2000) = 01h 52m 15s
   Dec(J2000) = +58d 54' 23"
```
with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed a multi-peaked structure with a duration of about 100 sec. The peak count rate was ~800 counts/sec (15-350 keV), at ~37 sec after the trigger.
The XRT began observing the field at 09:47:41.9 UT, 141.1 seconds after the BAT trigger. Using promptly downlinked data we find a fading, uncatalogued X-ray source located at RA, Dec 28.08019, 58.91005 which is equivalent to:
```
   RA(J2000)  = 01h 52m 19.25s
   Dec(J2000) = +58d 54' 36.2"
```
with an uncertainty of 3.7 arcseconds (radius, 90% containment). This location is 35 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 consistent with the Galactic value of 6.36 x 10^21 cm^-2 (Willingale et al. 2013).
UVOT took a finding chart exposure of 150 seconds with the White filter starting 144 seconds after the BAT trigger. No credible afterglow candidate has been found in the initial data products. The 2.7'x2.7' sub-image covers 100% of the XRT error circle. The typical 3-sigma upper limit has been about 19.6 mag. The 8'x8' region for the list of sources generated on-board covers 100% of the XRT error circle. The list of sources is typically complete to about 18 mag. No correction has been made for the large, but uncertain, extinction expected.
Burst Advocate for this burst is T. N. Ukwatta (tilan.ukwatta AT gmail.com). 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/)

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 01 Jul 19 10:08:52 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     912310,   Seg_Num: 0
POINT_RA:         28.036d {+01h 52m 09s} (J2000)
POINT_DEC:       +58.924d {+58d 55' 26"} (J2000)
POINT_ROLL:      92.575d
IMG_START_DATE:  18665 TJD;   182 DOY;   19/07/01
IMG_START_TIME:  35423.45 SOD {09:50:23.45} UT,   302.6 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        1.774
N_STARS:         190
X_OFFSET:        386 [pixels]
Y_OFFSET:        371 [pixels]
X_MAX:           1825 [pixels]
Y_MAX:           1810 [pixels]
DET_THRESH:      11
PHOTO_THRESH:    5
SL_URL:          sw00912310000msufc0302.fits
SUN_POSTN:       100.13d {+06h 40m 32s}  +23.11d {+23d 06' 33"}
SUN_DIST:         61.01 [deg]   Sun_angle= 4.8 [hr] (West of Sun)
MOON_POSTN:       80.42d {+05h 21m 41s}  +20.76d {+20d 45' 35"}
MOON_DIST:        53.14 [deg]
MOON_ILLUM:      3 [%]
GAL_COORDS:      130.71, -3.03 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       51.03, 43.57 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 01 Jul 19 10:09:08 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     912310,   Seg_Num: 0
POINT_RA:         28.036d {+01h 52m 09s} (J2000)
POINT_DEC:       +58.924d {+58d 55' 26"} (J2000)
POINT_ROLL:      92.575d
IMG_START_DATE:  18665 TJD;   182 DOY;   19/07/01
IMG_START_TIME:  35423.45 SOD {09:50:23.45} UT,   302.6 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        1.774
N_STARS:         190
X_OFFSET:        386 [pixels]
Y_OFFSET:        371 [pixels]
X_MAX:           1825 [pixels]
Y_MAX:           1810 [pixels]
DET_THRESH:      11
PHOTO_THRESH:    5
SL_URL:          sw00912310000msufc0302.fits
SUN_POSTN:       100.13d {+06h 40m 32s}  +23.11d {+23d 06' 33"}
SUN_DIST:         61.01 [deg]   Sun_angle= 4.8 [hr] (West of Sun)
MOON_POSTN:       80.42d {+05h 21m 41s}  +20.76d {+20d 45' 36"}
MOON_DIST:        53.14 [deg]
MOON_ILLUM:      3 [%]
GAL_COORDS:      130.71, -3.03 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       51.03, 43.57 [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:     Mon 01 Jul 19 10:10:19 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     912310,   Seg_Num: 0
POINT_RA:         28.036d {+01h 52m 09s} (J2000)
POINT_DEC:       +58.924d {+58d 55' 26"} (J2000)
ROLL:            92.575d
IMG_START_DATE:  18665 TJD;   182 DOY;   19/07/01
IMG_START_TIME:  35423.45 SOD {09:50:23.45} UT,   302.6 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     583667446
X_OFFSET:        945 [pixels]
Y_OFFSET:        930 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1105
Y_GRB_POS:       1090
BINNING_INDEX:   1
IM_URL:          sw00912310000msuni0326.fits
SUN_POSTN:       100.13d {+06h 40m 32s}  +23.11d {+23d 06' 33"}
SUN_DIST:         61.01 [deg]   Sun_angle= 4.8 [hr] (West of Sun)
MOON_POSTN:       80.43d {+05h 21m 44s}  +20.76d {+20d 45' 42"}
MOON_DIST:        53.14 [deg]
MOON_ILLUM:      3 [%]
GAL_COORDS:      130.71, -3.03 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       51.03, 43.57 [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:     Mon 01 Jul 19 10:10:27 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     912310,   Seg_Num: 0
POINT_RA:         28.036d {+01h 52m 09s} (J2000)
POINT_DEC:       +58.924d {+58d 55' 26"} (J2000)
ROLL:            92.575d
IMG_START_DATE:  18665 TJD;   182 DOY;   19/07/01
IMG_START_TIME:  35423.45 SOD {09:50:23.45} UT,   302.6 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     583667446
X_OFFSET:        945 [pixels]
Y_OFFSET:        930 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1105
Y_GRB_POS:       1090
BINNING_INDEX:   1
IM_URL:          sw00912310000msuni0326.fits
SUN_POSTN:       100.13d {+06h 40m 32s}  +23.11d {+23d 06' 33"}
SUN_DIST:         61.01 [deg]   Sun_angle= 4.8 [hr] (West of Sun)
MOON_POSTN:       80.44d {+05h 21m 45s}  +20.76d {+20d 45' 43"}
MOON_DIST:        53.14 [deg]
MOON_ILLUM:      3 [%]
GAL_COORDS:      130.71, -3.03 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       51.03, 43.57 [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:     Mon 01 Jul 19 10:09:50 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     912310,   Seg_Num: 0
GRB_RA:           28.0813d {+01h 52m 19.51s} (J2000),
                  28.4165d {+01h 53m 39.94s} (current),
                  27.2275d {+01h 48m 54.61s} (1950)
GRB_DEC:         +58.9095d {+58d 54' 34.2"} (J2000),
                 +59.0051d {+59d 00' 18.4"} (current),
                 +58.6629d {+58d 39' 46.4"} (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:  18665 TJD;   182 DOY;   19/07/01
IMG_START_TIME:  35277.00 SOD {09:47:57.00} UT,   156.2 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       100.13d {+06h 40m 32s}  +23.11d {+23d 06' 33"}
SUN_DIST:         60.99 [deg]   Sun_angle= 4.8 [hr] (West of Sun)
MOON_POSTN:       80.43d {+05h 21m 43s}  +20.76d {+20d 45' 39"}
MOON_DIST:        53.11 [deg]
MOON_ILLUM:      3 [%]
GAL_COORDS:      130.74, -3.04 [deg] galactic lon,lat of the burst
ECL_COORDS:       51.05, 43.55 [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:     Mon 01 Jul 19 10:12:49 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     912310,   Seg_Num: 0
POINT_RA:         28.036d {+01h 52m 09s} (J2000)
POINT_DEC:       +58.924d {+58d 55' 25"} (J2000)
POINT_ROLL:      92.575d
IMG_START_DATE:  18665 TJD;   182 DOY;   19/07/01
IMG_START_TIME:  36000.53 SOD {10:00:00.53} UT,   879.7 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        6.946
N_STARS:         190
X_OFFSET:        386 [pixels]
Y_OFFSET:        371 [pixels]
X_MAX:           1825 [pixels]
Y_MAX:           1810 [pixels]
DET_THRESH:      23
PHOTO_THRESH:    14
SL_URL:          sw00912310000msufc0879.fits
SUN_POSTN:       100.13d {+06h 40m 32s}  +23.11d {+23d 06' 33"}
SUN_DIST:         61.01 [deg]   Sun_angle= 4.8 [hr] (West of Sun)
MOON_POSTN:       80.46d {+05h 21m 50s}  +20.77d {+20d 45' 55"}
MOON_DIST:        53.15 [deg]
MOON_ILLUM:      3 [%]
GAL_COORDS:      130.71, -3.03 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       51.03, 43.57 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 01 Jul 19 10:13:04 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     912310,   Seg_Num: 0
POINT_RA:         28.036d {+01h 52m 09s} (J2000)
POINT_DEC:       +58.924d {+58d 55' 25"} (J2000)
POINT_ROLL:      92.575d
IMG_START_DATE:  18665 TJD;   182 DOY;   19/07/01
IMG_START_TIME:  36000.53 SOD {10:00:00.53} UT,   879.7 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        6.946
N_STARS:         190
X_OFFSET:        386 [pixels]
Y_OFFSET:        371 [pixels]
X_MAX:           1825 [pixels]
Y_MAX:           1810 [pixels]
DET_THRESH:      23
PHOTO_THRESH:    14
SL_URL:          sw00912310000msufc0879.fits
SUN_POSTN:       100.13d {+06h 40m 32s}  +23.11d {+23d 06' 32"}
SUN_DIST:         61.01 [deg]   Sun_angle= 4.8 [hr] (West of Sun)
MOON_POSTN:       80.46d {+05h 21m 51s}  +20.77d {+20d 45' 56"}
MOON_DIST:        53.15 [deg]
MOON_ILLUM:      3 [%]
GAL_COORDS:      130.71, -3.03 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       51.03, 43.57 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Source List.  
COMMENTS:        All 4 attachments are included.

GCN Circular #24935
P.A. Evans (U. Leicester) reports on behalf of the Swift-XRT team:
Using promptly downlinked XRT event data for GRB 190701A, we find an enhanced XRT position of the afterglow: RA, Dec: 28.0815, 58.9095 which is equivalent to:
```
   RA (J2000)  = 01 52 19.56
   Dec (J2000) = +58 54 34.3
```
with an uncertainty of 2.1 arcseconds (radius, 90% confidence). Analysis of the promptly available data is online at http://www.swift.ac.uk/sper/912310.
Position enhancement is is described by Goad et al. (2007, A&A, 476, 1401) and Evans et al. (2009, MNRAS, 397, 1177).
This circular is an official product of the Swift-XRT team.
GCN Circular #24937
K. Setoguchi (Kyoto U.), H. Negoro, M. Nakajima, W. Maruyama, M. Aoki, K. Kobayashi (Nihon U.), S. Nakahira, T. Mihara, T. Tamagawa, M. Matsuoka (RIKEN), T. Sakamoto, M. Serino, S. Sugita, H. Nishida, A. Yoshida (AGU), Y. Tsuboi, W. Iwakiri, R. Sasaki, H. Kawai, T. Sato (Chuo U.), M. Shidatsu (Ehime U.), N. Kawai, M. Sugizaki, M. Oeda, K. Shiraishi (Tokyo Tech), S. Ueno, H. Tomida, M. Ishikawa, Y. Sugawara, N. Isobe, R. Shimomukai, M. Tominaga (JAXA), Y. Ueda, A. Tanimoto, S. Yamada, S. Ogawa, T. Yoshitake (Kyoto U.), H. Tsunemi, T. Yoneyama, K. Asakura, S. Ide (Osaka U.), M. Yamauchi, S. Iwahori, Y. Kurihara, K. Kurogi, K. Miike (Miyazaki U.), T. Kawamuro (NAOJ), K. Yamaoka (Nagoya U.), Y. Kawakubo (LSU) report on behalf of the MAXI team:
The MAXI/GSC nova alert system triggered a bright uncatalogued X-ray transient source at 09:46:42 UT on July 1, 2019. Assuming that the source flux was constant over the transit, we obtain the source position at (R.A., Dec) = (27.548 deg, 58.852 deg) = (01 50 11, +58 51 06) (J2000) with a 90% C.L. statistical error of 0.16 deg and an additional systematic uncertainty of 0.1 deg (90% containment radius). Without assumptions on the source constancy, we obtain a rectangular error box for the transient source with the following corners:
```
(25.762, 59.105) deg = (01 43 02, +59 06 17) (J2000)
(25.721, 58.781) deg = (01 42 53, +58 46 51) (J2000)
(29.166, 58.620) deg = (01 56 39, +58 37 11) (J2000)
(29.239, 58.942) deg = (01 56 57, +58 56 31) (J2000).
```
This position is consistent with that of GRB 190701A detected by Swift (Ukwatta et al., GCN 24934, Evans et al., GCN 24935).
The X-ray flux averaged over the scan was 416 +- 39 mCrab (4.0-10.0keV, 1 sigma error).
There was no significant excess flux in the previous transit at UT 08:14 and in the next transit at 11:19 UT with an upper limit of 20 mCrab for each.
GCN Circular #24940
J.P. Osborne, A.P. Beardmore, P.A. Evans and M.R. Goad (U. Leicester) report on behalf of the Swift-XRT team.
Using 890 s of XRT Photon Counting mode data and 1 UVOT images for GRB 190701A, 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 = 28.08140, +58.90943 which is equivalent to:
```
RA (J2000): 01h 52m 19.54s
Dec (J2000): +58d 54' 33.9"
```
with an uncertainty of 1.9 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 #24946
Rosa L. Becerra (UNAM), Alan M. Watson (UNAM), Nat Butler (ASU), Diego Gonz�lez (UNAM),Alexander Kutyrev (GSFC), William H. Lee (UNAM), Margarita Pereyra (UNAM), and Eleonora Troja (GSFC) report:
We observed the field of GRB 190701A (Ukwatta et al., GCN Circ. 24934) with the COATLI 50-cm telescope and interim imager at the Observatorio Astron�mico Nacional on the Sierra de San Pedro M�rtir (http://coatli.astroscu.unam.mx) from 2019-07-01 09:47:03 to 10:05:06 (from 25.6 seconds after the alert or 103 seconds to 0.33 hours after the trigger), obtaining a total of 490 seconds of exposure in the w filter.
Comparing to the USNO and Pan-STARRS1 catalogs, we do not detect any new sources brighter than w = 20.99 (3-sigma limiting mag) in the XRT error region (Osborne et al., GCN Circ. 24940).
Our w magnitudes are calibrated against the Pan-STARRS1 catalog, are on an approximate AB system, and are not corrected for Galactic extinction in the direction of the GRB.
We thank the COATLI technical team and the staff of the Observatorio Astron�mico Nacional.
GCN Circular #24954
H. Kumar, V. Karambelkar, K. Deshmukh, G. Waratkar, V. Bhalerao (IITB), G. C. Anupama, T. Stanzin (IIA) report on behalf of the GROWTH collaboration:
We observed GRB190701A reported by T. N. Ukwatta et al, (GCN 24934) with 0.7m GROWTH-India telescope. The field was observed in g, r and i filters. We didn’t detect any new source within an uncertainty region of 1.9 arcseconds (radius, 90% containment) around RA(J2000) = 01h 52m 19.54s, Dec(J2000) = +58d 54' 33.9" (J.P. Osborne et al, GCN 24940).
We obtained the following upper limits:
```
------------------------------------------------------------------
 JD(Start)| Exposure(sec) | Filter | lim_Mag |
------------------------------------------------------------------
 2458666.351 | 600 | g | 19.18|
 2458666.373 | 600 | r | 20.57|
 2458666.382 | 600 | i | 19.52|
------------------------------------------------------------------
```
The GROWTH India Telescope (GIT) is a 70-cm telescope with a 0.7 degree field of view, set up by the Indian Institute of Astrophysics and the Indian Institute of Technology Bombay with support from the Indo-US Science and Technology Forum (IUSSTF) and the Science and Engineering Research Board (SERB) of the Department of Science and Technology (DST), Government of India (https://sites.google.com/view/growthindia/). It is located at the Indian Astronomical Observatory (Hanle), operated by the Indian Institute of Astrophysics (IIA).
GCN Circular #24955
M. H. Siegel (PSU) and T. N. Ukwatta (LANL) report on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 190701A 145 s after the BAT trigger (Ukwatta et al., GCN Circ. 24934). No optical afterglow consistent with the enhanced XRT position (Osborne et al. GCN Circ. 24940) is detected in the initial UVOT exposures. Preliminary 3-sigma upper limits using the UVOT photometric system (Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the first finding chart (FC) exposure and subsequent exposures are:
```
Filter         T_start(s)   T_stop(s)      Exp(s)         Mag

white_FC           145          295          147         >20.3
u_FC               303          553          246         >19.8
white              145         6776          727         >21.2
v                  629        11104          409         >19.3
b                  559         6570          432         >20.6
u                  303         6365          659         >20.6
w1                 677         6160          432         >19.9
m2                 652         5955          432         >19.3
w2                 610        10926         1158         >20.2
```
The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.59 in the direction of the burst (Schlegel et al. 1998).
GCN Circular #24961
E. Ambrosi (INAF-IASFPA) , V. D'Elia (ASDC), D.N. Burrows (PSU), J. D. Gropp (PSU), A. Tohuvavohu (PSU), K.L. Page (U. Leicester), A.P. Beardmore (U. Leicester), P.A. Evans (U. Leicester), A. D'Ai (INAF-IASFPA) and T.N. Ukwatta report on behalf of the Swift-XRT team:
We have analysed 8.4 ks of XRT data for GRB 190701A (Ukwatta et al. GCN Circ. 24934), from 144 s to 34.9 ks after the BAT trigger. The data comprise 10 s in Windowed Timing (WT) mode with the remainder in Photon Counting (PC) mode. The enhanced XRT position for this burst was given by Osborne et al. (GCN Circ. 24935).
The light curve can be modelled with an initial power-law decay with an index of alpha=8.0 (+0.0, -0.9), followed by a break at T+239 s to an alpha of 0.40 (+0.08, -0.09).
A spectrum formed from the PC mode data can be fitted with an absorbed power-law with a photon spectral index of 1.81 (+0.23, -0.12). The best-fitting absorption column is consistent with the Galactic value of 6.4 x 10^21 cm^-2 (Willingale et al. 2013). The counts to observed (unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 4.7 x 10^-11 (7.1 x 10^-11) erg cm^-2 count^-1.
A summary of the PC-mode spectrum is thus:
```
Total column:	     6.4 (+/-1.0) x 10^21 cm^-2
Galactic foreground: 6.4 x 10^21 cm^-2
Excess significance: <1.6 sigma
Photon index:	     1.81 (+0.23, -0.12)
```
If the light curve continues to decay with a power-law decay index of 0.40, the count rate at T+24 hours will be 0.018 count s^-1, corresponding to an observed (unabsorbed) 0.3-10 keV flux of 8.5 x 10^-13 (1.3 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/00912310.
This circular is an official product of the Swift-XRT team.
GCN Circular #24973
A. Y. Lien (GSFC/UMBC), S. D. Barthelmy (GSFC), J. R. Cummings (CPI), H. A. Krimm (NSF), C. B. Markwardt (GSFC), D. M. Palmer (LANL), T. Sakamoto (AGU), M. Stamatikos (OSU), T. N. Ukwatta (LANL) (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 190701A (trigger #912310) (Ukwatta, et al., GCN Circ. 24934). The BAT ground-calculated position is RA, Dec = 28.131, 58.899 deg which is
```
  RA(J2000)  =  01h 52m 31.5s 
  Dec(J2000) = +58d 53' 56.9" 
```
with an uncertainty of 2.4 arcmin, (radius, sys+stat, 90% containment). The partial coding was 52%.
The mask-weighted light curve shows a multi-peaked structure. The main period of emission includes three broad peaks between roughly T+0 sec and T+100 sec, peaking about T+38 sec. T90 (15-350 keV) is 52.4 +- 4.0 sec (estimated error including systematics).
The time-averaged spectrum from T+35.0 to T+90.0 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.91 +- 0.27. The fluence in the 15-150 keV band is 8.7 +- 1.5 x 10^-7 erg/cm2. The 1-sec peak photon flux measured from T+37.92 sec in the 15-150 keV band is 1.2 +- 0.3 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/912310/BA/

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Jochen Greiner, last update: 07-Jul-2019 [Disclaimer]