Gamma-ray Burst 190114B

(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 14 Jan 19 19:32:29 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     883818,   Seg_Num: 0
GRB_RA:          174.883d {+11h 39m 32s} (J2000),
                 175.130d {+11h 40m 31s} (current),
                 174.233d {+11h 36m 56s} (1950)
GRB_DEC:         +18.877d {+18d 52' 36"} (J2000),
                 +18.771d {+18d 46' 16"} (current),
                 +19.154d {+19d 09' 14"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       43380 [cnts]    Image_Peak=600 [image_cnts]
TRIGGER_DUR:     16.384 [sec] 
TRIGGER_INDEX:   479     E_range: 25-100 keV
BKG_INTEN:       160001 [cnts]
BKG_TIME:        70169.75 SOD {19:29:29.75} UT
BKG_DUR:         64 [sec]
GRB_DATE:        18497 TJD;    14 DOY;   19/01/14
GRB_TIME:        70272.08 SOD {19:31:12.08} UT
GRB_PHI:           2.34 [deg]
GRB_THETA:        35.85 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     9.48 [sigma]
IMAGE_SIGNIF:    7.12 [sigma]
MERIT_PARAMS:     +1  +0  +0  +4  +2  -3  +0  +0 +57  +0 
SUN_POSTN:       296.24d {+19h 44m 58s}  -21.25d {-21d 14' 45"}
SUN_DIST:        124.93 [deg]   Sun_angle= 8.1 [hr] (West of Sun)
MOON_POSTN:       30.28d {+02h 01m 06s}   +6.68d {+06d 40' 60"}
MOON_DIST:       137.01 [deg]
MOON_ILLUM:      55 [%]
GAL_COORDS:      235.68, 71.54 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      167.66, 15.26 [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 = 81.04,19.05 [deg].

red DSS finding chart ps-file

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 14 Jan 19 19:34:01 UT
NOTICE_TYPE:     Swift-XRT Nack-Position
TRIGGER_NUM:     883818,   Seg_Num: 0
POINT_RA:        174.865d {+11h 39m 28s} (J2000)
POINT_DEC:       +18.918d {+18d 55' 03"} (J2000)
IMG_START_DATE:  18497 TJD;    14 DOY;   19/01/14
IMG_START_TIME:  70429.63 SOD {19:33:49.63} UT,   157.6 [sec] since BAT Trigger Time
COUNTS:          7    Min_needed= 20
STD_DEV:         0.00   Max_StdDev_for_Good=28.44 [arcsec]
PH2_ITER:        1    Max_iter_allowed= 4
ERROR_CODE:      1
COMMENTS:        SWIFT-XRT Nack Position.  
COMMENTS:        No source found in the image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 14 Jan 19 19:35:18 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     883818,   Seg_Num: 0
GRB_RA:          174.883d {+11h 39m 32s} (J2000),
                 175.130d {+11h 40m 31s} (current),
                 174.233d {+11h 36m 56s} (1950)
GRB_DEC:         +18.877d {+18d 52' 36"} (J2000),
                 +18.771d {+18d 46' 16"} (current),
                 +19.154d {+19d 09' 14"} (1950)
GRB_DATE:        18497 TJD;    14 DOY;   19/01/14
GRB_TIME:        70272.08 SOD {19:31:12.08} UT
TRIGGER_INDEX:   479
GRB_PHI:           2.34 [deg]
GRB_THETA:        35.85 [deg]
DELTA_TIME:      6.00 [sec]
TRIGGER_DUR:     16.384 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     9.48 [sigma]
IMAGE_SIGNIF:    7.12 [sigma]
LC_URL:          sw00883818000msb.lc
SUN_POSTN:       296.25d {+19h 44m 59s}  -21.25d {-21d 14' 44"}
SUN_DIST:        124.93 [deg]   Sun_angle= 8.1 [hr] (West of Sun)
MOON_POSTN:       30.30d {+02h 01m 12s}   +6.69d {+06d 41' 31"}
MOON_DIST:       136.99 [deg]
MOON_ILLUM:      55 [%]
GAL_COORDS:      235.68, 71.54 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      167.66, 15.26 [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 = 81.04,19.05 [deg].

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 14 Jan 19 19:38:23 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     883818,   Seg_Num: 0
POINT_RA:        174.865d {+11h 39m 28s} (J2000)
POINT_DEC:       +18.918d {+18d 55' 03"} (J2000)
POINT_ROLL:      103.202d
IMG_START_DATE:  18497 TJD;    14 DOY;   19/01/14
IMG_START_TIME:  70430.07 SOD {19:33:50.07} UT,   158.0 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        0.677
N_STARS:         190
X_OFFSET:        537 [pixels]
Y_OFFSET:        460 [pixels]
X_MAX:           1976 [pixels]
Y_MAX:           1899 [pixels]
DET_THRESH:      7
PHOTO_THRESH:    3
SL_URL:          sw00883818000msufc0157.fits
SUN_POSTN:       296.25d {+19h 45m 00s}  -21.25d {-21d 14' 43"}
SUN_DIST:        124.96 [deg]   Sun_angle= 8.1 [hr] (West of Sun)
MOON_POSTN:       30.32d {+02h 01m 18s}   +6.70d {+06d 42' 06"}
MOON_DIST:       136.92 [deg]
MOON_ILLUM:      55 [%]
GAL_COORDS:      235.54, 71.54 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      167.63, 15.29 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Mon 14 Jan 19 19:37:46 UT
NOTICE_TYPE:     Swift-XRT Position
TRIGGER_NUM:     883818,   Seg_Num: 0
GRB_RA:          174.8734d {+11h 39m 29.61s} (J2000),
                 175.1205d {+11h 40m 28.91s} (current),
                 174.2238d {+11h 36m 53.70s} (1950)
GRB_DEC:         +18.8923d {+18d 53' 32.2"} (J2000),
                 +18.7867d {+18d 47' 12.1"} (current),
                 +19.1694d {+19d 10' 10.0"} (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:  18497 TJD;    14 DOY;   19/01/14
IMG_START_TIME:  70454.00 SOD {19:34:14.00} UT,   181.9 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       296.25d {+19h 44m 59s}  -21.25d {-21d 14' 43"}
SUN_DIST:        124.95 [deg]   Sun_angle= 8.1 [hr] (West of Sun)
MOON_POSTN:       30.32d {+02h 01m 17s}   +6.70d {+06d 41' 59"}
MOON_DIST:       136.95 [deg]
MOON_ILLUM:      55 [%]
GAL_COORDS:      235.63, 71.54 [deg] galactic lon,lat of the burst
ECL_COORDS:      167.65, 15.27 [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 14 Jan 19 19:38:35 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     883818,   Seg_Num: 0
POINT_RA:        174.865d {+11h 39m 28s} (J2000)
POINT_DEC:       +18.918d {+18d 55' 03"} (J2000)
POINT_ROLL:      103.202d
IMG_START_DATE:  18497 TJD;    14 DOY;   19/01/14
IMG_START_TIME:  70430.07 SOD {19:33:50.07} UT,   158.0 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        0.677
N_STARS:         190
X_OFFSET:        537 [pixels]
Y_OFFSET:        460 [pixels]
X_MAX:           1976 [pixels]
Y_MAX:           1899 [pixels]
DET_THRESH:      7
PHOTO_THRESH:    3
SL_URL:          sw00883818000msufc0157.fits
SUN_POSTN:       296.25d {+19h 45m 00s}  -21.25d {-21d 14' 43"}
SUN_DIST:        124.96 [deg]   Sun_angle= 8.1 [hr] (West of Sun)
MOON_POSTN:       30.33d {+02h 01m 18s}   +6.70d {+06d 42' 08"}
MOON_DIST:       136.92 [deg]
MOON_ILLUM:      55 [%]
GAL_COORDS:      235.54, 71.54 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      167.63, 15.29 [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 14 Jan 19 19:39:45 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     883818,   Seg_Num: 0
POINT_RA:        174.865d {+11h 39m 28s} (J2000)
POINT_DEC:       +18.918d {+18d 55' 03"} (J2000)
ROLL:            103.202d
IMG_START_DATE:  18497 TJD;    14 DOY;   19/01/14
IMG_START_TIME:  70430.07 SOD {19:33:50.07} UT,   158.0 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     569187252
X_OFFSET:        1096 [pixels]
Y_OFFSET:        1019 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1256
Y_GRB_POS:       1179
BINNING_INDEX:   1
IM_URL:          sw00883818000msuni0180.fits
SUN_POSTN:       296.25d {+19h 45m 00s}  -21.25d {-21d 14' 42"}
SUN_DIST:        124.96 [deg]   Sun_angle= 8.1 [hr] (West of Sun)
MOON_POSTN:       30.34d {+02h 01m 21s}   +6.71d {+06d 42' 21"}
MOON_DIST:       136.91 [deg]
MOON_ILLUM:      55 [%]
GAL_COORDS:      235.54, 71.54 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      167.63, 15.29 [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 14 Jan 19 19:39:55 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     883818,   Seg_Num: 0
POINT_RA:        174.865d {+11h 39m 28s} (J2000)
POINT_DEC:       +18.918d {+18d 55' 03"} (J2000)
ROLL:            103.202d
IMG_START_DATE:  18497 TJD;    14 DOY;   19/01/14
IMG_START_TIME:  70430.07 SOD {19:33:50.07} UT,   158.0 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     569187252
X_OFFSET:        1096 [pixels]
Y_OFFSET:        1019 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1256
Y_GRB_POS:       1179
BINNING_INDEX:   1
IM_URL:          sw00883818000msuni0180.fits
SUN_POSTN:       296.25d {+19h 45m 00s}  -21.25d {-21d 14' 42"}
SUN_DIST:        124.96 [deg]   Sun_angle= 8.1 [hr] (West of Sun)
MOON_POSTN:       30.34d {+02h 01m 21s}   +6.71d {+06d 42' 23"}
MOON_DIST:       136.91 [deg]
MOON_ILLUM:      55 [%]
GAL_COORDS:      235.54, 71.54 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      167.63, 15.29 [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 14 Jan 19 19:48:34 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     883818,   Seg_Num: 0
POINT_RA:        174.865d {+11h 39m 28s} (J2000)
POINT_DEC:       +18.919d {+18d 55' 10"} (J2000)
POINT_ROLL:      103.200d
IMG_START_DATE:  18497 TJD;    14 DOY;   19/01/14
IMG_START_TIME:  71130.01 SOD {19:45:30.01} UT,   857.9 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        0.448
N_STARS:         190
X_OFFSET:        537 [pixels]
Y_OFFSET:        460 [pixels]
X_MAX:           1976 [pixels]
Y_MAX:           1899 [pixels]
DET_THRESH:      6
PHOTO_THRESH:    3
SL_URL:          sw00883818000msufc0857.fits
SUN_POSTN:       296.26d {+19h 45m 01s}  -21.24d {-21d 14' 38"}
SUN_DIST:        124.97 [deg]   Sun_angle= 8.1 [hr] (West of Sun)
MOON_POSTN:       30.41d {+02h 01m 38s}   +6.73d {+06d 44' 00"}
MOON_DIST:       136.84 [deg]
MOON_ILLUM:      56 [%]
GAL_COORDS:      235.54, 71.54 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      167.63, 15.30 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN Circular #23686
M. H. Siegel (PSU), D. N. Burrows (PSU), J.D. Gropp (PSU), J. A. Kennea (PSU), N. J. Klingler (PSU), H. A. Krimm (NSF/USRA), N. P. M. Kuin (UCL-MSSL), S. J. LaPorte (PSU), A. Y. Lien (GSFC/UMBC), M. J. Moss (George Washington University), K. L. Page (U Leicester), B. Sbarufatti (PSU) and A. Tohuvavohu (PSU) report on behalf of the Neil Gehrels Swift Observatory Team:
At 19:31:12 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 190114B (trigger=883818). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 174.883, +18.877 which is
```
   RA(J2000) = 11h 39m 32s
   Dec(J2000) = +18d 52' 36"
```
with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed a weak pulse with a duration of about 20 sec. Also, there is a possible precursor at ~T-75 s. The peak count rate was ~800 counts/sec (15-350 keV), at ~4 sec after the trigger.
The XRT began observing the field at 19:33:49.6 UT, 157.5 seconds after the BAT trigger. Using promptly downlinked data we find a fading, uncatalogued X-ray source located at RA, Dec 174.87349, 18.89230 which is equivalent to:
```
   RA(J2000)  = 11h 39m 29.64s
   Dec(J2000) = +18d 53' 32.3"
```
with an uncertainty of 3.7 arcseconds (radius, 90% containment). This location is 63 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 1.75 x 10^20 cm^-2 (Willingale et al. 2013).
UVOT took a finding chart exposure of 250 seconds with the U filter starting 157 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 19.2 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 18.0 mag. No correction has been made for the expected extinction corresponding to E(B-V) of 0.02.
Burst Advocate for this burst is M. H. Siegel (siegel AT swift.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:     Mon 14 Jan 19 19:48:46 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     883818,   Seg_Num: 0
POINT_RA:        174.865d {+11h 39m 28s} (J2000)
POINT_DEC:       +18.919d {+18d 55' 10"} (J2000)
POINT_ROLL:      103.200d
IMG_START_DATE:  18497 TJD;    14 DOY;   19/01/14
IMG_START_TIME:  71130.01 SOD {19:45:30.01} UT,   857.9 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        0.448
N_STARS:         190
X_OFFSET:        537 [pixels]
Y_OFFSET:        460 [pixels]
X_MAX:           1976 [pixels]
Y_MAX:           1899 [pixels]
DET_THRESH:      6
PHOTO_THRESH:    3
SL_URL:          sw00883818000msufc0857.fits
SUN_POSTN:       296.26d {+19h 45m 01s}  -21.24d {-21d 14' 38"}
SUN_DIST:        124.97 [deg]   Sun_angle= 8.1 [hr] (West of Sun)
MOON_POSTN:       30.41d {+02h 01m 39s}   +6.73d {+06d 44' 03"}
MOON_DIST:       136.84 [deg]
MOON_ILLUM:      56 [%]
GAL_COORDS:      235.54, 71.54 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      167.63, 15.30 [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:     Mon 14 Jan 19 19:49:41 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     883818,   Seg_Num: 0
POINT_RA:        174.865d {+11h 39m 28s} (J2000)
POINT_DEC:       +18.919d {+18d 55' 10"} (J2000)
ROLL:            103.200d
IMG_START_DATE:  18497 TJD;    14 DOY;   19/01/14
IMG_START_TIME:  71130.01 SOD {19:45:30.01} UT,   857.9 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     569187952
X_OFFSET:        1096 [pixels]
Y_OFFSET:        1019 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1256
Y_GRB_POS:       1179
BINNING_INDEX:   1
IM_URL:          sw00883818000msuni0880.fits
SUN_POSTN:       296.26d {+19h 45m 02s}  -21.24d {-21d 14' 38"}
SUN_DIST:        124.97 [deg]   Sun_angle= 8.1 [hr] (West of Sun)
MOON_POSTN:       30.42d {+02h 01m 41s}   +6.74d {+06d 44' 13"}
MOON_DIST:       136.83 [deg]
MOON_ILLUM:      56 [%]
GAL_COORDS:      235.54, 71.54 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      167.63, 15.30 [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 14 Jan 19 19:49:50 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     883818,   Seg_Num: 0
POINT_RA:        174.865d {+11h 39m 28s} (J2000)
POINT_DEC:       +18.919d {+18d 55' 10"} (J2000)
ROLL:            103.200d
IMG_START_DATE:  18497 TJD;    14 DOY;   19/01/14
IMG_START_TIME:  71130.01 SOD {19:45:30.01} UT,   857.9 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     569187952
X_OFFSET:        1096 [pixels]
Y_OFFSET:        1019 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1256
Y_GRB_POS:       1179
BINNING_INDEX:   1
IM_URL:          sw00883818000msuni0880.fits
SUN_POSTN:       296.26d {+19h 45m 02s}  -21.24d {-21d 14' 38"}
SUN_DIST:        124.97 [deg]   Sun_angle= 8.1 [hr] (West of Sun)
MOON_POSTN:       30.42d {+02h 01m 41s}   +6.74d {+06d 44' 15"}
MOON_DIST:       136.83 [deg]
MOON_ILLUM:      56 [%]
GAL_COORDS:      235.54, 71.54 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      167.63, 15.30 [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:        If you have elected to receive attachments:  
COMMENTS:        The uvot_catalog_image.fits.gz file does not exist; skipping the attachment.

GCN Circular #23691
M.R. Goad, J.P. Osborne, A.P. Beardmore and P.A. Evans (U. Leicester) report on behalf of the Swift-XRT team.
Using 1925 s of XRT Photon Counting mode data and 2 UVOT images for GRB 190114B, 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 = 174.87422, +18.89079 which is equivalent to:
```
RA (J2000): 11h 39m 29.81s
Dec (J2000): +18d 53' 26.9"
```
with an uncertainty of 2.3 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 #23694
E. Fernandez-Garcia, Y.-D. Hu, X.-Y.Li, , A. Ayala, A. J. Castro-Tirado (IAA-CSIC), C. Perez del Pulgar, A. Castellon, I. Carrasco (Univ. de Malaga), �and D. Xiong, Y. Fan, X. Zhao, J. Bai, C. Wang, Y. Xin (Yunnan Nacional Astronomical Observatory) on behalf of a larger collaboration, report:
"Following the detection of GRB 190114B by Swift/BAT (Siegel et al. GCNC 23686), the 0.6m BOOTES-4/MET robotic telescope at Lijiang Astronomical Observatory (China) obtained follow-up� observations starting at 19:53:24 UT (~0.37 hr after trigger). Within the enhaced Swift/XRT position (Goad et al. GCNC 23691) an optical source with a preliminary magnitude of 20.3 mag (clear filter) is detected, fading in brightness in the late-time images, which we suggest as the optical afterglow to GRB 190114B at coordinates (J2000) RA = 11:39:29.81, Dec =+18:53:28.1 (+/- 1"). Observations are ongoing."
GCN Circular #23696
A. Pozanenko (IKI), E. Klunko (ISTP), E. Mazaeva (IKI), A. Volnova (IKI), S. Belkin (IKI) report on behalf of IKI-FuN:
We observed the field of the GRB 190114B (Siegel et al., GCN 23686) with AZT-33IK telescope of Sayan observatory (Mondy). We started observations on Jan. 14 (UT) 20:28:30, i.e. 57 minutes after burst trigger. Within the enhanced XRT position (Goad et al., GCN 23691) we detect the object which is absent in SDSS catalog. Coordinates of the object are (J2000) 11:39:29.84 +18:53:27.8 with uncertainty 0.5 arcsec in both coordinates. The brightens of the object is R ~ 20.1m at (UT) 20:28:30. We suggest the object is the afterglow of GRB 190114B. The photometry is based on nearby SDSS DR12 stars, Lupton transformation. .
GCN Circular #23703
L. P. Xin, Y. J. Xiao, P. P. Zhang, R. S. Zhang, J. Wang, J. Y. Wei, E. W. Liang, X. G. Wang, Y. G. Yang, X. M. Lu, L. Huang, H. B. Cai, Y. L. Qiu, Y. Xu, Y. J. Xiao, Y. T. Zheng, C. Wu, J. S. Deng, D. W. Xu, D. TURPIN, H. L. Li, and W. L. Dong, report:
We started to observe GRB 190114B ( Siegel et al., GCN 23686 ) with GWAC-F60B 60cm optical telescope at 19:46:26 UT, Jan. 14th 2019, about 14 min after the burst.
The afterglow reported by ( Goad et al., GCN 23691; Fernandez-Garcia et al., GCN 23694; Pozanenko et al., GCN 23696) was not detected in R band images. The upper limit is estimated to be about 18.3 mag calibrated by nearby USNO-B1.0 stars.
GWAC-F60B is operated by Guangxi university and NAOC, CAS, at Xinglong observatory, China.
The message may be cited.
GCN Circular #23705
R. Itoh, K. L. Murata, Y. Tachibana, S. Harita, K. Morita, K. Shiraishi, K. Iida, M. Niwano, R. Adachi, M. Oeda, Y. Yatsu, and N. Kawai (Tokyo Tech) report on behalf of the MITSuME collaboration
We searched for the optical counterpart of GRB 190114B (M. Siegel et al., GCN #23686) with the optical three color (g', Rc, and Ic) CCD cameras attached to the MITSuME 50 cm telescope at Akeno Observatory,Yamanashi, Japan.
The observation started on 19:33:01 UT which corresponds to 109 sec after the trigger. We did not find any new point source within the enhanced XRT circle (Goad et al., GCN #23691; Fernandez-Garcia et al., GCN #23694; Pozanenko et al., GCN #23696; Xin et al., GCN #23703) in all three bands. We obtained following 5 sigma limits for the magnitudes.
```
T0+[sec]    MID-UT      T-EXP[sec]    g'       Rc        Ic
-------------------------------------------------------------------------------------------------------
109  19:37:35    480    >19.4     >18.7     >18.2
-------------------------------------------------------------------------------------------------------
T0+ : Elapsed time after the burst
T-EXP: Total Exposure time
```
We used UCAC-4 catalog for flux calibration.
GCN Circular #23713
J. Selsing (DAWN/NBI and DAWN/DTU), A. de Ugarte Postigo (HETH/IAA-CSIC and DARK/NBI), and S. Dyrbye (NOT), report on behalf of a larger collaboration:
We have observed the optical afterglow of GRB GRB190114B (Siegel et al., GCN 23686; Goad et al., GCN 23691) at the 2.5-m Nordic Optical Telescope (NOT). We have obtained an griz-band imaging sequence using the ALFOSC instrument, with 3x300s exposure in gri-band and 5x200s in z-band. Observations began at 01:51:42 UT, on the night of the 14th of January, 6.3 hr after the BAT trigger.�
In the images we confirm the detection of the optical counterpart in Fernandez-Garcia et al. (GCN 23694) and Pozanenko et al. (GCN 23696) and report further fading. The source is located at:
```
RA (J2000.0) = 11:39:29.823
DEC (J2000.0) = +18:53:28.19
```
with the astrometric solution calibrated against the 2MASS catalog.�
We calibrate the photometric zeropoints against the Pan-STARRS catalog and calculate the following magnitudes for the optical counterpart:
```
g = 21.61 +- 0.13 AB mag�
r = 21.15 +- 0.09 AB mag�
i = 20.96 +- 0.04 AB mag�
z = 20.59 +- 0.08 AB mag
```
GCN Circular #23720
M. H. Siegel (PSU) reports on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 190114B 158 s after the BAT trigger (Siegel et al., GCN Circ. 23686). No optical afterglow consistent with the enhanced XRT position (Goad et al. GCN Circ. 23691) or the position of the faint optical counterpart (Fernandez-Garcia et al., GCN Circ. 23694; Pozanenko et al., GCN Circ. 23696, Selsing et al. GCN Circ. 23713) 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

u_FC               158          408          246         >20.2
v                  464         1976          175         >18.5
b                  414         2075          214         >19.9
u                  158         2050          568         >20.4
w1                 513         2025          194         >19.7
m2                 786         2000          117         >18.9
w2                 440         2100          194         >19.8
```
The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.02 in the direction of the burst (Schlegel et al. 1998).
GCN Circular #23721
J. R. Cummings (CPI), S. D. Barthelmy (GSFC), H. A. Krimm (NSF/USRA), A. Y. Lien (GSFC/UMBC), C. B. Markwardt (GSFC), D. M. Palmer (LANL), T. Sakamoto (AGU), M. H. Siegel (PSU), 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 190114B (trigger #883818) (Siegel et al., GCN Circ. 23686). The BAT ground-calculated position is RA, Dec = 174.868, 18.882 deg which is
```
  RA(J2000)  =  11h 39m 28.3s
  Dec(J2000) = +18d 52' 53.5"
```
with an uncertainty of 2.3 arcmin, (radius, sys+stat, 90% containment). The partial coding was 63%.
The mask-weighted light curve shows a weak pulse that starts at ~T0 and ends at ~T+30 s. The possible precursor seen at ~T-75 s (Siegel et al., GCN Circ. 23686) turns out to be purely instrumental and is not related to this GRB. T90 (15-350 keV) is 26.5 +- 6.7 sec (estimated error including systematics).
The time-averaged spectrum from T-1.2 to T+27.9 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.98 +- 0.28. The fluence in the 15-150 keV band is 5.1 +- 1.0 x 10^-7 erg/cm2. The 1-sec peak photon flux measured from T+3.62 sec in the 15-150 keV band is 0.5 +- 0.2 ph/cm2/sec. All the quoted errors are at the 90% confidence level.
The results of the batgrbproduct analysis are available at http://gcn.gsfc.nasa.gov/notices_s/883818/BA/
GCN Circular #23722
A. Volnova (IKI), A. Pozanenko (IKI), E. Mazaeva (IKI), E. Klunko (ISTP), S. Belkin (IKI), R. Ya. Inasaridze (AbAO), V.R. Ayvazian (AbAO), G. V. Kapanadze (AbAO), report on behalf of IKI-FuN:
We observed the field of the GRB 190114B (Siegel et al., GCN 23686) with AZT-33IK telescope of Sayan observatory (Mondy), and AS-32 (0.7m) telescope of Abastumani Observatory. The optical afterglow (Fernandez-Garcia et al., GCN 23694; Pozanenko et al., GCN 23696; Selsing et al., GCN 23713) is detected in stacked images. Preliminary photometry is following.
```
Date       UT start t-T0    Filter Exp.   OT    Err. Observatory
                    (mid, days) (s)

2019-01-14 20:28:30 0.10233 R      30*120 19.87 0.06  Mondy
2019-01-15 01:04:51 0.24212 R      18*60  20.40 0.25  AbAO
```
The photometry is based on nearby SDSS stars
```
SDSS id             R_Lupton
J113927.36+185157.2 17.094 0.014
J113940.10+185315.3 17.015 0.015
J113939.20+185354.8 17.954 0.018
```
The photometry might be affected by a nearby galaxy (r'=20.534, z_ph = 0.32813+/-0.08585) at a distance of 5.6 arc seconds.
GCN Circular #23723
M. Blazek, L. Izzo (HETH-IAA/CSIC) A. de Ugarte Postigo (DARK/NBI & HETH-IAA/CSIC), D. A. Kann, C. C. Thoene (HETH-IAA/CSIC) report:
We observed the field of GRB 190114B (Siegel et al. GCN 23686) with the IO:I camera mounted on the 2-m Liverpool Telescope located in La Palma, Spain. Observations started on January 15th at 02:51:47 UT (7.34 hours after the GRB trigger) and we obtained a series of 10x60s images in the H filter.
We detect the faint optical afterglow (Fernandez-Garcia et al. GCN 23694, Pozanenko et al. GCN 23696, Selsing et al. GCN 23713, Volnova et al., GCN 23722) for which we measure the following magnitude:
H(AB) = 20.35 +- 0.34 mag
The calibration was performed using four nearby 2MASS stars.
GCN Circular #23730
A. D'Ai (INAF-IASFPA), D.N. Burrows (PSU), A. Tohuvavohu (PSU), S. J. LaPorte (PSU), A.P. Beardmore (U. Leicester), P.A. Evans (U. Leicester), J.P. Osborne (U. Leicester), A. Melandri (INAF-OAB), P. D'Avanzo (INAF-OAB) and M.H. Siegel report on behalf of the Swift-XRT team:
We have analysed 2.4 ks of XRT data for GRB 190114B (Siegel et al. GCN Circ. 23686), from 165 s to 104.3 ks after the BAT trigger. The data are entirely in Photon Counting (PC) mode. The enhanced XRT position for this burst was given by Goad et al. (GCN Circ. 23691).
The light curve can be modelled with a power-law decay with a decay index of alpha=2.1 (+/-0.4).
A spectrum formed from the PC mode data can be fitted with an absorbed power-law with a photon spectral index of 1.99 (+0.34, -0.14). The best-fitting absorption column is consistent with the Galactic value of 1.7 x 10^20 cm^-2 (Willingale et al. 2013). The counts to observed (unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 3.2 x 10^-11 (3.4 x 10^-11) erg cm^-2 count^-1.
A summary of the PC-mode spectrum is thus:
```
Total column:	     1.7 (+/-4.8) x 10^20 cm^-2
Galactic foreground: 1.7 x 10^20 cm^-2
Excess significance: <1.6 sigma
Photon index:	     1.99 (+0.34, -0.14)
```
The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00883818.
This circular is an official product of the Swift-XRT team.
GCN Circular #23743
A. Volnova (IKI), A. Pozanenko (IKI), E. Mazaeva (IKI), E. Klunko (ISTP), S. Belkin (IKI) report on behalf of IKI-GRB-FuN:
We observed the field of the GRB 190114B (Siegel et al., GCN 23686) with AZT-33IK telescope of Sayan observatory (Mondy) starting on Jan. 15 (UT) 21:06:04. The optical afterglow (e.g. Fernandez-Garcia et al., GCN 23694; Pozanenko et al., GCN 23696; Selsing et al., GCN 23713) is marginally detected in a stacked image. Preliminary photometry is following.
```
Date       UT start t-T0    Filter Exp.   OT    Err.
                    (mid, days) (s)

2019-01-15 21:06:04 1.08672 R      30*120 22.2 0.35
```
The photometry is based on nearby SDSS stars
```
SDSS id             R_Lupton
J113927.36+185157.2 17.094 0.014
J113940.10+185315.3 17.015 0.015
J113939.20+185354.8 17.954 0.018
```

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Jochen Greiner, last update: 16-Jan-2019 [Disclaimer]