Gamma-ray Burst 190109A

(All information courtesy of the instrument teams.)

Previous IAU Circulars

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Results of Observations

GCN/BACODINE POSITION NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 09 Jan 19 05:14:30 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     882747,   Seg_Num: 0
GRB_RA:           33.218d {+02h 12m 52s} (J2000),
                  33.508d {+02h 14m 02s} (current),
                  32.460d {+02h 09m 50s} (1950)
GRB_DEC:         +38.110d {+38d 06' 36"} (J2000),
                 +38.198d {+38d 11' 54"} (current),
                 +37.876d {+37d 52' 34"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=4565 [image_cnts]
TRIGGER_DUR:     96.000 [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:        18492 TJD;     9 DOY;   19/01/09
GRB_TIME:        18761.78 SOD {05:12:41.78} UT
GRB_PHI:          75.07 [deg]
GRB_THETA:        32.69 [deg]
SOLN_STATUS:     0x20000013
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    19.78 [sigma]
MERIT_PARAMS:     +1  +0  +0  +7  +1  +6  +0  +0 +39  +0 
SUN_POSTN:       290.18d {+19h 20m 44s}  -22.14d {-22d 08' 23"}
SUN_DIST:        113.63 [deg]   Sun_angle= -6.9 [hr] (East of Sun)
MOON_POSTN:      326.05d {+21h 44m 12s}  -16.15d {-16d 09' 02"}
MOON_DIST:        83.26 [deg]
MOON_ILLUM:      9 [%]
GAL_COORDS:      140.11,-22.03 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       44.24, 23.25 [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 = 208.62,-18.84 [deg].  
COMMENTS:           
COMMENTS:        NOTE: This BAT event is temporally(8.0<100sec) coincident with the FERMI_GBM event (trignum=568703574).

red DSS finding chart ps-file

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Wed 09 Jan 19 05:13:14 UT
NOTICE_TYPE:     Fermi-GBM Flight Position
RECORD_NUM:      44
TRIGGER_NUM:     568703574
GRB_RA:           28.950d {+01h 55m 48s} (J2000),
                  29.211d {+01h 56m 51s} (current),
                  28.265d {+01h 53m 04s} (1950)
GRB_DEC:         +18.567d {+18d 34' 00"} (J2000),
                 +18.659d {+18d 39' 33"} (current),
                 +18.322d {+18d 19' 20"} (1950)
GRB_ERROR:       24.42 [deg radius, statistical plus systematic]
GRB_INTEN:       54 [cnts/sec]
DATA_SIGNIF:     5.30 [sigma]
INTEG_TIME:      4.096 [sec]
GRB_DATE:        18492 TJD;     9 DOY;   19/01/09
GRB_TIME:        18769.45 SOD {05:12:49.45} UT
GRB_PHI:         124.00 [deg]
GRB_THETA:        70.00 [deg]
DATA_TIME_SCALE: 4.0960 [sec]
HARD_RATIO:      0.78
LOC_ALGORITHM:   3 (version number of)
MOST_LIKELY:      93%  GRB
2nd_MOST_LIKELY:   2%  GRO_J0422_32
DETECTORS:       0,0,0, 0,0,0, 0,0,0, 1,1,0, 0,0,
SUN_POSTN:       290.18d {+19h 20m 44s}  -22.14d {-22d 08' 23"}
SUN_DIST:        104.97 [deg]   Sun_angle= -6.6 [hr] (East of Sun)
MOON_POSTN:      326.04d {+21h 44m 09s}  -16.15d {-16d 09' 12"}
MOON_DIST:        71.23 [deg]
MOON_ILLUM:      9 [%]
GAL_COORDS:      143.54,-41.72 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       33.43,  6.29 [deg] ecliptic lon,lat of the burst (or transient)
LC_URL:          http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn190109217/quicklook/glg_lc_medres34_bn190109217.gif
COMMENTS:        Fermi-GBM Flight-calculated Coordinates.  
COMMENTS:        This trigger occurred at longitude,latitude = 106.65,-16.05 [deg].  
COMMENTS:        The LC_URL file will not be created until ~15 min after the trigger.

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Wed 09 Jan 19 05:13:43 UT
NOTICE_TYPE:     Fermi-GBM Flight Position
RECORD_NUM:      67
TRIGGER_NUM:     568703574
GRB_RA:           34.950d {+02h 19m 48s} (J2000),
                  35.248d {+02h 20m 59s} (current),
                  34.171d {+02h 16m 41s} (1950)
GRB_DEC:         +41.417d {+41d 25' 00"} (J2000),
                 +41.503d {+41d 30' 12"} (current),
                 +41.187d {+41d 11' 15"} (1950)
GRB_ERROR:       18.47 [deg radius, statistical plus systematic]
GRB_INTEN:       86 [cnts/sec]
DATA_SIGNIF:     8.40 [sigma]
INTEG_TIME:      4.096 [sec]
GRB_DATE:        18492 TJD;     9 DOY;   19/01/09
GRB_TIME:        18769.45 SOD {05:12:49.45} UT
GRB_PHI:         150.00 [deg]
GRB_THETA:        65.00 [deg]
DATA_TIME_SCALE: 4.0960 [sec]
HARD_RATIO:      1.84
LOC_ALGORITHM:   3 (version number of)
MOST_LIKELY:      74%  GRB
2nd_MOST_LIKELY:  13%  Distant Particles
DETECTORS:       0,0,0, 0,0,0, 0,0,0, 1,1,0, 0,0,
SUN_POSTN:       290.18d {+19h 20m 44s}  -22.14d {-22d 08' 23"}
SUN_DIST:        115.47 [deg]   Sun_angle= -7.0 [hr] (East of Sun)
MOON_POSTN:      326.04d {+21h 44m 10s}  -16.15d {-16d 09' 08"}
MOON_DIST:        85.93 [deg]
MOON_ILLUM:      9 [%]
GAL_COORDS:      140.23,-18.47 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       46.92, 25.85 [deg] ecliptic lon,lat of the burst (or transient)
LC_URL:          http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn190109217/quicklook/glg_lc_medres34_bn190109217.gif
COMMENTS:        Fermi-GBM Flight-calculated Coordinates.  
COMMENTS:        This trigger occurred at longitude,latitude = 106.65,-16.05 [deg].  
COMMENTS:        The LC_URL file will not be created until ~15 min after the trigger.

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Wed 09 Jan 19 05:13:28 UT
NOTICE_TYPE:     Fermi-GBM Ground Position
RECORD_NUM:      57
TRIGGER_NUM:     568703574
GRB_RA:           48.910d {+03h 15m 38s} (J2000),
                  49.210d {+03h 16m 50s} (current),
                  48.123d {+03h 12m 29s} (1950)
GRB_DEC:         +35.250d {+35d 15' 00"} (J2000),
                 +35.319d {+35d 19' 10"} (current),
                 +35.066d {+35d 03' 56"} (1950)
GRB_ERROR:       11.00 [deg radius, statistical only]
DATA_SIGNIF:     7.60 [sigma]
DATA_INTERVAL:   4.096 [sec]
GRB_DATE:        18492 TJD;     9 DOY;   19/01/09
GRB_TIME:        18769.45 SOD {05:12:49.45} UT
GRB_PHI:         148.00 [deg]
GRB_THETA:        78.00 [deg]
E_RANGE:         44.032 - 279.965 [keV]
LOC_ALGORITHM:   4153 (Gnd S/W Version number)
SUN_POSTN:       290.18d {+19h 20m 44s}  -22.14d {-22d 08' 23"}
SUN_DIST:        125.78 [deg]   Sun_angle= -7.9 [hr] (East of Sun)
MOON_POSTN:      326.04d {+21h 44m 10s}  -16.15d {-16d 09' 10"}
MOON_DIST:        93.88 [deg]
MOON_ILLUM:      9 [%]
GAL_COORDS:      153.47,-18.93 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       55.95, 16.54 [deg] ecliptic lon,lat of the burst (or transient)
LC_URL:          http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn190109217/quicklook/glg_lc_medres34_bn190109217.gif
POS_MAP_URL:     http://gcn.gsfc.nasa.gov/notices_f/gbm_gnd_loc_map_568703574.fits
COMMENTS:        Fermi-GBM Ground-calculated Coordinates.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.  
COMMENTS:        The LC_URL file will not be created/available until ~15 min after the trigger.  
COMMENTS:        The POS_MAP_URL file will not be created/available until ~1.5 min after the notice.

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Wed 09 Jan 19 05:14:19 UT
NOTICE_TYPE:     Fermi-GBM Ground Position
RECORD_NUM:      0
TRIGGER_NUM:     568703574
GRB_RA:           40.840d {+02h 43m 22s} (J2000),
                  41.129d {+02h 44m 31s} (current),
                  40.081d {+02h 40m 20s} (1950)
GRB_DEC:         +33.290d {+33d 17' 24"} (J2000),
                 +33.370d {+33d 22' 12"} (current),
                 +33.078d {+33d 04' 41"} (1950)
GRB_ERROR:       6.74 [deg radius, statistical only]
DATA_SIGNIF:     12.00 [sigma]
DATA_INTERVAL:   12.288 [sec]
GRB_DATE:        18492 TJD;     9 DOY;   19/01/09
GRB_TIME:        18769.45 SOD {05:12:49.45} UT
GRB_PHI:         143.00 [deg]
GRB_THETA:        73.00 [deg]
E_RANGE:         44.032 - 279.965 [keV]
LOC_ALGORITHM:   41531 (Gnd S/W Version number)
SUN_POSTN:       290.18d {+19h 20m 44s}  -22.14d {-22d 08' 23"}
SUN_DIST:        118.94 [deg]   Sun_angle= -7.4 [hr] (East of Sun)
MOON_POSTN:      326.05d {+21h 44m 11s}  -16.15d {-16d 09' 04"}
MOON_DIST:        86.93 [deg]
MOON_ILLUM:      9 [%]
GAL_COORDS:      148.35,-24.00 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       48.70, 16.63 [deg] ecliptic lon,lat of the burst (or transient)
LC_URL:          http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn190109217/quicklook/glg_lc_medres34_bn190109217.gif
POS_MAP_URL:     http://gcn.gsfc.nasa.gov/notices_f/gbm_gnd_loc_map_568703574.fits
COMMENTS:        Fermi-GBM Ground-calculated Coordinates.  
COMMENTS:        This is likely a Long GRB.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.  
COMMENTS:        The LC_URL file will not be created/available until ~15 min after the trigger.  
COMMENTS:        The POS_MAP_URL file will not be created/available until ~1.5 min after the notice.

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Wed 09 Jan 19 05:14:41 UT
NOTICE_TYPE:     Fermi-GBM Ground Position
RECORD_NUM:      1
TRIGGER_NUM:     568703574
GRB_RA:           46.160d {+03h 04m 38s} (J2000),
                  46.454d {+03h 05m 49s} (current),
                  45.390d {+03h 01m 34s} (1950)
GRB_DEC:         +33.080d {+33d 04' 48"} (J2000),
                 +33.153d {+33d 09' 11"} (current),
                 +32.886d {+32d 53' 09"} (1950)
GRB_ERROR:       5.72 [deg radius, statistical only]
DATA_SIGNIF:     13.60 [sigma]
DATA_INTERVAL:   17.408 [sec]
GRB_DATE:        18492 TJD;     9 DOY;   19/01/09
GRB_TIME:        18769.45 SOD {05:12:49.45} UT
GRB_PHI:         145.00 [deg]
GRB_THETA:        77.00 [deg]
E_RANGE:         44.032 - 279.965 [keV]
LOC_ALGORITHM:   41531 (Gnd S/W Version number)
SUN_POSTN:       290.18d {+19h 20m 44s}  -22.14d {-22d 08' 23"}
SUN_DIST:        123.32 [deg]   Sun_angle= -7.8 [hr] (East of Sun)
MOON_POSTN:      326.05d {+21h 44m 12s}  -16.15d {-16d 09' 01"}
MOON_DIST:        91.03 [deg]
MOON_ILLUM:      9 [%]
GAL_COORDS:      152.68,-21.99 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       53.05, 15.09 [deg] ecliptic lon,lat of the burst (or transient)
LC_URL:          http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn190109217/quicklook/glg_lc_medres34_bn190109217.gif
POS_MAP_URL:     http://gcn.gsfc.nasa.gov/notices_f/gbm_gnd_loc_map_568703574.fits
COMMENTS:        Fermi-GBM Ground-calculated Coordinates.  
COMMENTS:        This is likely a Long GRB.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.  
COMMENTS:        The LC_URL file will not be created/available until ~15 min after the trigger.  
COMMENTS:        The POS_MAP_URL file will not be created/available until ~1.5 min after the notice.  
COMMENTS:           
COMMENTS:        NOTE: This GBM event is temporally(8.0<100sec) coincident with the SWIFT_BAT event (trignum=882747).

GCN NOTICE

TITLE:           GCN/FERMI NOTICE
NOTICE_DATE:     Wed 09 Jan 19 05:22:11 UT
NOTICE_TYPE:     Fermi-GBM Final Position
RECORD_NUM:      0
TRIGGER_NUM:     568703574
GRB_RA:           30.970d {+02h 03m 53s} (J2000),
                  31.258d {+02h 05m 02s} (current),
                  30.217d {+02h 00m 52s} (1950)
GRB_DEC:         +38.630d {+38d 37' 48"} (J2000),
                 +38.721d {+38d 43' 14"} (current),
                 +38.390d {+38d 23' 25"} (1950)
GRB_ERROR:       5.96 [deg radius, statistical only]
GRB_DATE:        18492 TJD;     9 DOY;   19/01/09
GRB_TIME:        18769.45 SOD {05:12:49.45} UT
GRB_PHI:         146.00 [deg]
GRB_THETA:        63.00 [deg]
E_RANGE:         44.032 - 279.965 [keV]
LOC_ALGORITHM:   41531 (Gnd S/W Version number)
SUN_POSTN:       290.19d {+19h 20m 45s}  -22.14d {-22d 08' 20"}
SUN_DIST:        111.99 [deg]   Sun_angle= -6.7 [hr] (East of Sun)
MOON_POSTN:      326.11d {+21h 44m 27s}  -16.14d {-16d 08' 05"}
MOON_DIST:        81.88 [deg]
MOON_ILLUM:      9 [%]
GAL_COORDS:      138.13,-22.09 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       42.66, 24.39 [deg] ecliptic lon,lat of the burst (or transient)
LC_URL:          http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn190109217/quicklook/glg_lc_medres34_bn190109217.gif
LOC_URL:         http://heasarc.gsfc.nasa.gov/FTP/fermi/data/gbm/triggers/2019/bn190109217/quicklook/glg_locplot_all_bn190109217.png
COMMENTS:        Fermi-GBM Final Position.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.  
COMMENTS:        The LC_URL file should be available by the time this FINAL notice is produced.  
COMMENTS:        This notice was generated completely by automated pipeline processing.  
COMMENTS:        This is likely a Long GRB.  
COMMENTS:           
COMMENTS:        NOTE: This GBM event is temporally(8.0<100sec) coincident with the SWIFT_BAT event (trignum=882747).

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 09 Jan 19 05:17:11 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     882747,   Seg_Num: 0
GRB_RA:           33.218d {+02h 12m 52s} (J2000),
                  33.508d {+02h 14m 02s} (current),
                  32.460d {+02h 09m 50s} (1950)
GRB_DEC:         +38.110d {+38d 06' 36"} (J2000),
                 +38.198d {+38d 11' 54"} (current),
                 +37.876d {+37d 52' 34"} (1950)
GRB_DATE:        18492 TJD;     9 DOY;   19/01/09
GRB_TIME:        18761.78 SOD {05:12:41.78} UT
TRIGGER_INDEX:   20000
GRB_PHI:          75.07 [deg]
GRB_THETA:        32.69 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     96.000 [sec] 
SOLN_STATUS:     0x13
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    19.78 [sigma]
LC_URL:          sw00882747000msb.lc
SUN_POSTN:       290.18d {+19h 20m 44s}  -22.14d {-22d 08' 22"}
SUN_DIST:        113.63 [deg]   Sun_angle= -6.9 [hr] (East of Sun)
MOON_POSTN:      326.07d {+21h 44m 17s}  -16.15d {-16d 08' 42"}
MOON_DIST:        83.24 [deg]
MOON_ILLUM:      9 [%]
GAL_COORDS:      140.11,-22.03 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:       44.24, 23.25 [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 = 208.62,-18.84 [deg].

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 09 Jan 19 05:16:12 UT
NOTICE_TYPE:     Swift-XRT Image
TRIGGER_NUM:     882747,   Seg_Num: 0
GRB_RA:           33.2050d {+02h 12m 49.1s} (J2000),
                  33.4945d {+02h 13m 58.6s} (current),
                  32.4466d {+02h 09m 47.1s} (1950)
GRB_DEC:         +38.1070d {+38d 06' 25.1"} (J2000),
                 +38.1955d {+38d 11' 43.6"} (current),
                 +37.8730d {+37d 52' 22.9"} (1950)
GRB_ERROR:       5.0 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       79 [cnts]
IMG_START_DATE:  18492 TJD;     9 DOY;   19/01/09
IMG_START_TIME:  18930.66 SOD {05:15:30.66} UT,   168.9 [sec] since BAT Trigger Time
CENTROID_X:      335.56,  raw= 336  [pixels]
CENTROID_Y:      293.03,  raw= 293  [pixels]
ROLL:            259.49 [deg]
GAIN:            1
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   -12.63
GRB_POS_XRT_Z:   68.75
IMAGE_URL:       sw00882747000msxps_rw.img
SUN_POSTN:       290.18d {+19h 20m 44s}  -22.14d {-22d 08' 22"}
SUN_DIST:        113.62 [deg]   Sun_angle= -6.9 [hr] (East of Sun)
MOON_POSTN:      326.06d {+21h 44m 15s}  -16.15d {-16d 08' 50"}
MOON_DIST:        83.24 [deg]
MOON_ILLUM:      9 [%]
GAL_COORDS:      140.10,-22.04 [deg] galactic lon,lat of the burst
ECL_COORDS:       44.23, 23.25 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 09 Jan 19 05:16:00 UT
NOTICE_TYPE:     Swift-XRT Position
TRIGGER_NUM:     882747,   Seg_Num: 0
GRB_RA:           33.2050d {+02h 12m 49.19s} (J2000),
                  33.4945d {+02h 13m 58.67s} (current),
                  32.4466d {+02h 09m 47.18s} (1950)
GRB_DEC:         +38.1070d {+38d 06' 25.1"} (J2000),
                 +38.1955d {+38d 11' 43.6"} (current),
                 +37.8730d {+37d 52' 22.9"} (1950)
GRB_ERROR:       5.1 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       2.06e-09 [erg/cm2/sec]
GRB_SIGNIF:      8.88 [sigma]
IMG_START_DATE:  18492 TJD;     9 DOY;   19/01/09
IMG_START_TIME:  18930.66 SOD {05:15:30.66} UT,   168.9 [sec] since BAT Trigger Time
TAM[0-3]:        327.69 237.18 261.72 243.54
AMPLIFIER:       2
WAVEFORM:        134
SUN_POSTN:       290.18d {+19h 20m 44s}  -22.14d {-22d 08' 22"}
SUN_DIST:        113.62 [deg]   Sun_angle= -6.9 [hr] (East of Sun)
MOON_POSTN:      326.06d {+21h 44m 15s}  -16.15d {-16d 08' 51"}
MOON_DIST:        83.24 [deg]
MOON_ILLUM:      9 [%]
GAL_COORDS:      140.10,-22.04 [deg] galactic lon,lat of the burst
ECL_COORDS:       44.23, 23.25 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.  
COMMENTS:        The XRT position is 0.64 arcmin from the BAT position.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 09 Jan 19 05:16:18 UT
NOTICE_TYPE:     Swift-XRT Processed Image
TRIGGER_NUM:     882747,   Seg_Num: 0
GRB_RA:           33.2050d {+02h 12m 49.1s} (J2000),
                  33.4945d {+02h 13m 58.6s} (current),
                  32.4466d {+02h 09m 47.1s} (1950)
GRB_DEC:         +38.1070d {+38d 06' 25.1"} (J2000),
                 +38.1955d {+38d 11' 43.6"} (current),
                 +37.8730d {+37d 52' 22.9"} (1950)
GRB_ERROR:       5.0 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       79 [cnts]
IMG_START_DATE:  18492 TJD;     9 DOY;   19/01/09
IMG_START_TIME:  18930.66 SOD {05:15:30.66} UT,   168.9 [sec] since BAT Trigger Time
CENTROID_X:      335.56,  raw= 336  [pixels]
CENTROID_Y:      293.03,  raw= 293  [pixels]
ROLL:            259.49 [deg]
GAIN:            1
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   -12.63
GRB_POS_XRT_Z:   68.75
IMAGE_URL:       sw00882747000msxps_rw.img
SUN_POSTN:       290.18d {+19h 20m 44s}  -22.14d {-22d 08' 22"}
SUN_DIST:        113.62 [deg]   Sun_angle= -6.9 [hr] (East of Sun)
MOON_POSTN:      326.06d {+21h 44m 15s}  -16.15d {-16d 08' 49"}
MOON_DIST:        83.24 [deg]
MOON_ILLUM:      9 [%]
GAL_COORDS:      140.10,-22.04 [deg] galactic lon,lat of the burst
ECL_COORDS:       44.23, 23.25 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Processed Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 09 Jan 19 05:18:42 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     882747,   Seg_Num: 0
POINT_RA:         33.182d {+02h 12m 44s} (J2000)
POINT_DEC:       +38.100d {+38d 05' 59"} (J2000)
POINT_ROLL:      259.490d
IMG_START_DATE:  18492 TJD;     9 DOY;   19/01/09
IMG_START_TIME:  18942.04 SOD {05:15:42.04} UT,   180.3 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        2.169
N_STARS:         79
X_OFFSET:        356 [pixels]
Y_OFFSET:        653 [pixels]
X_MAX:           1315 [pixels]
Y_MAX:           1612 [pixels]
DET_THRESH:      12
PHOTO_THRESH:    6
SL_URL:          sw00882747000msufc0180.fits
SUN_POSTN:       290.19d {+19h 20m 44s}  -22.14d {-22d 08' 21"}
SUN_DIST:        113.60 [deg]   Sun_angle= -6.9 [hr] (East of Sun)
MOON_POSTN:      326.08d {+21h 44m 20s}  -16.14d {-16d 08' 31"}
MOON_DIST:        83.20 [deg]
MOON_ILLUM:      9 [%]
GAL_COORDS:      140.08,-22.05 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       44.21, 23.25 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 09 Jan 19 05:18:51 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     882747,   Seg_Num: 0
POINT_RA:         33.182d {+02h 12m 44s} (J2000)
POINT_DEC:       +38.100d {+38d 05' 59"} (J2000)
POINT_ROLL:      259.490d
IMG_START_DATE:  18492 TJD;     9 DOY;   19/01/09
IMG_START_TIME:  18942.04 SOD {05:15:42.04} UT,   180.3 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        2.169
N_STARS:         79
X_OFFSET:        356 [pixels]
Y_OFFSET:        653 [pixels]
X_MAX:           1315 [pixels]
Y_MAX:           1612 [pixels]
DET_THRESH:      12
PHOTO_THRESH:    6
SL_URL:          sw00882747000msufc0180.fits
SUN_POSTN:       290.19d {+19h 20m 45s}  -22.14d {-22d 08' 21"}
SUN_DIST:        113.60 [deg]   Sun_angle= -6.9 [hr] (East of Sun)
MOON_POSTN:      326.08d {+21h 44m 20s}  -16.14d {-16d 08' 30"}
MOON_DIST:        83.20 [deg]
MOON_ILLUM:      9 [%]
GAL_COORDS:      140.08,-22.05 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       44.21, 23.25 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Source List.  
COMMENTS:        All 4 attachments are included.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 09 Jan 19 05:20:00 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     882747,   Seg_Num: 0
POINT_RA:         33.182d {+02h 12m 44s} (J2000)
POINT_DEC:       +38.100d {+38d 05' 59"} (J2000)
ROLL:            259.490d
IMG_START_DATE:  18492 TJD;     9 DOY;   19/01/09
IMG_START_TIME:  18942.04 SOD {05:15:42.04} UT,   180.3 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     568703764
X_OFFSET:        676 [pixels]
Y_OFFSET:        973 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       836
Y_GRB_POS:       1133
BINNING_INDEX:   1
IM_URL:          sw00882747000msuni0203.fits
SUN_POSTN:       290.19d {+19h 20m 45s}  -22.14d {-22d 08' 21"}
SUN_DIST:        113.60 [deg]   Sun_angle= -6.9 [hr] (East of Sun)
MOON_POSTN:      326.09d {+21h 44m 23s}  -16.14d {-16d 08' 21"}
MOON_DIST:        83.19 [deg]
MOON_ILLUM:      9 [%]
GAL_COORDS:      140.08,-22.05 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       44.21, 23.25 [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:     Wed 09 Jan 19 05:20:07 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     882747,   Seg_Num: 0
POINT_RA:         33.182d {+02h 12m 44s} (J2000)
POINT_DEC:       +38.100d {+38d 05' 59"} (J2000)
ROLL:            259.490d
IMG_START_DATE:  18492 TJD;     9 DOY;   19/01/09
IMG_START_TIME:  18942.04 SOD {05:15:42.04} UT,   180.3 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     568703764
X_OFFSET:        676 [pixels]
Y_OFFSET:        973 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       836
Y_GRB_POS:       1133
BINNING_INDEX:   1
IM_URL:          sw00882747000msuni0203.fits
SUN_POSTN:       290.19d {+19h 20m 45s}  -22.14d {-22d 08' 21"}
SUN_DIST:        113.60 [deg]   Sun_angle= -6.9 [hr] (East of Sun)
MOON_POSTN:      326.10d {+21h 44m 23s}  -16.14d {-16d 08' 21"}
MOON_DIST:        83.19 [deg]
MOON_ILLUM:      9 [%]
GAL_COORDS:      140.08,-22.05 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       44.21, 23.25 [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:     Wed 09 Jan 19 05:22:56 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     882747,   Seg_Num: 0
POINT_RA:         33.179d {+02h 12m 43s} (J2000)
POINT_DEC:       +38.099d {+38d 05' 58"} (J2000)
POINT_ROLL:      259.488d
IMG_START_DATE:  18492 TJD;     9 DOY;   19/01/09
IMG_START_TIME:  19101.30 SOD {05:18:21.30} UT,   339.5 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        0.670
N_STARS:         60
X_OFFSET:        356 [pixels]
Y_OFFSET:        653 [pixels]
X_MAX:           1315 [pixels]
Y_MAX:           1612 [pixels]
DET_THRESH:      7
PHOTO_THRESH:    3
SL_URL:          sw00882747000msufc0339.fits
SUN_POSTN:       290.19d {+19h 20m 45s}  -22.14d {-22d 08' 20"}
SUN_DIST:        113.59 [deg]   Sun_angle= -6.9 [hr] (East of Sun)
MOON_POSTN:      326.12d {+21h 44m 28s}  -16.13d {-16d 08' 00"}
MOON_DIST:        83.17 [deg]
MOON_ILLUM:      9 [%]
GAL_COORDS:      140.08,-22.05 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       44.20, 23.25 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 09 Jan 19 05:23:16 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     882747,   Seg_Num: 0
POINT_RA:         33.179d {+02h 12m 43s} (J2000)
POINT_DEC:       +38.099d {+38d 05' 58"} (J2000)
POINT_ROLL:      259.488d
IMG_START_DATE:  18492 TJD;     9 DOY;   19/01/09
IMG_START_TIME:  19101.30 SOD {05:18:21.30} UT,   339.5 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        0.670
N_STARS:         60
X_OFFSET:        356 [pixels]
Y_OFFSET:        653 [pixels]
X_MAX:           1315 [pixels]
Y_MAX:           1612 [pixels]
DET_THRESH:      7
PHOTO_THRESH:    3
SL_URL:          sw00882747000msufc0339.fits
SUN_POSTN:       290.19d {+19h 20m 45s}  -22.14d {-22d 08' 20"}
SUN_DIST:        113.59 [deg]   Sun_angle= -6.9 [hr] (East of Sun)
MOON_POSTN:      326.12d {+21h 44m 29s}  -16.13d {-16d 07' 57"}
MOON_DIST:        83.17 [deg]
MOON_ILLUM:      9 [%]
GAL_COORDS:      140.08,-22.05 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       44.20, 23.25 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Source List.  
COMMENTS:        All 4 attachments are included.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 09 Jan 19 05:24:20 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     882747,   Seg_Num: 0
POINT_RA:         33.179d {+02h 12m 43s} (J2000)
POINT_DEC:       +38.099d {+38d 05' 58"} (J2000)
ROLL:            259.488d
IMG_START_DATE:  18492 TJD;     9 DOY;   19/01/09
IMG_START_TIME:  19101.30 SOD {05:18:21.30} UT,   339.5 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     568703923
X_OFFSET:        676 [pixels]
Y_OFFSET:        973 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       836
Y_GRB_POS:       1133
BINNING_INDEX:   1
IM_URL:          sw00882747000msuni0362.fits
SUN_POSTN:       290.19d {+19h 20m 46s}  -22.14d {-22d 08' 19"}
SUN_DIST:        113.59 [deg]   Sun_angle= -6.9 [hr] (East of Sun)
MOON_POSTN:      326.13d {+21h 44m 31s}  -16.13d {-16d 07' 49"}
MOON_DIST:        83.16 [deg]
MOON_ILLUM:      9 [%]
GAL_COORDS:      140.08,-22.05 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       44.20, 23.25 [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:     Wed 09 Jan 19 05:24:33 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     882747,   Seg_Num: 0
POINT_RA:         33.179d {+02h 12m 43s} (J2000)
POINT_DEC:       +38.099d {+38d 05' 58"} (J2000)
ROLL:            259.488d
IMG_START_DATE:  18492 TJD;     9 DOY;   19/01/09
IMG_START_TIME:  19101.30 SOD {05:18:21.30} UT,   339.5 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     568703923
X_OFFSET:        676 [pixels]
Y_OFFSET:        973 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       836
Y_GRB_POS:       1133
BINNING_INDEX:   1
IM_URL:          sw00882747000msuni0362.fits
SUN_POSTN:       290.19d {+19h 20m 46s}  -22.14d {-22d 08' 19"}
SUN_DIST:        113.59 [deg]   Sun_angle= -6.9 [hr] (East of Sun)
MOON_POSTN:      326.13d {+21h 44m 32s}  -16.13d {-16d 07' 48"}
MOON_DIST:        83.16 [deg]
MOON_ILLUM:      9 [%]
GAL_COORDS:      140.08,-22.05 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       44.20, 23.25 [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 Circular #23642
J.D. Gropp (PSU), S. D. Barthelmy (GSFC), M. J. Moss (George Washington University), D. M. Palmer (LANL) and A. Tohuvavohu (PSU) report on behalf of the Neil Gehrels Swift Observatory Team:
At 05:12:41 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 190109A (trigger=882747). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 33.218, +38.110, which is
```
   RA(J2000)  =  02h 12m 52s
   Dec(J2000) = +38d 06' 36"
```
with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve shows several peaks with a total duration of about 70 sec. The peak count rate was ~700 counts/sec (15-350 keV), at ~8 sec after the trigger.
The XRT began observing the field at 05:15:30.6 UT, 168.9 seconds after the BAT trigger. Using promptly downlinked data we find a bright, fading, uncatalogued X-ray source located at RA, Dec 33.20430, 38.10690 which is equivalent to:
```
   RA(J2000)  = 02h 12m 49.03s
   Dec(J2000) = +38d 06' 24.8"
```
with an uncertainty of 3.9 arcseconds (radius, 90% containment). This location is 40 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. No spectrum from the promptly downlinked event data is yet available to determine the column density.
The initial flux in the 2.5 s image was 2.06e-09 erg cm^-2 s^-1 (0.2-10 keV).
UVOT took a finding chart exposure of 150 seconds with the White filter starting 180 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 expected extinction corresponding to E(B-V) of 0.05.
Burst Advocate for this burst is J.D. Gropp (jdg44 AT 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:     Wed 09 Jan 19 05:30:15 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     882747,   Seg_Num: 0
POINT_RA:         33.180d {+02h 12m 43s} (J2000)
POINT_DEC:       +38.099d {+38d 05' 57"} (J2000)
POINT_ROLL:      259.488d
IMG_START_DATE:  18492 TJD;     9 DOY;   19/01/09
IMG_START_TIME:  19633.21 SOD {05:27:13.21} UT,   871.4 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        2.159
N_STARS:         190
X_OFFSET:        116 [pixels]
Y_OFFSET:        413 [pixels]
X_MAX:           1555 [pixels]
Y_MAX:           1852 [pixels]
DET_THRESH:      12
PHOTO_THRESH:    6
SL_URL:          sw00882747000msufc0871.fits
SUN_POSTN:       290.19d {+19h 20m 47s}  -22.14d {-22d 08' 17"}
SUN_DIST:        113.59 [deg]   Sun_angle= -6.9 [hr] (East of Sun)
MOON_POSTN:      326.18d {+21h 44m 43s}  -16.12d {-16d 07' 05"}
MOON_DIST:        83.11 [deg]
MOON_ILLUM:      9 [%]
GAL_COORDS:      140.08,-22.05 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       44.20, 23.25 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 09 Jan 19 05:30:32 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     882747,   Seg_Num: 0
POINT_RA:         33.180d {+02h 12m 43s} (J2000)
POINT_DEC:       +38.099d {+38d 05' 57"} (J2000)
POINT_ROLL:      259.488d
IMG_START_DATE:  18492 TJD;     9 DOY;   19/01/09
IMG_START_TIME:  19633.21 SOD {05:27:13.21} UT,   871.4 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        2.159
N_STARS:         190
X_OFFSET:        116 [pixels]
Y_OFFSET:        413 [pixels]
X_MAX:           1555 [pixels]
Y_MAX:           1852 [pixels]
DET_THRESH:      12
PHOTO_THRESH:    6
SL_URL:          sw00882747000msufc0871.fits
SUN_POSTN:       290.19d {+19h 20m 47s}  -22.14d {-22d 08' 17"}
SUN_DIST:        113.59 [deg]   Sun_angle= -6.9 [hr] (East of Sun)
MOON_POSTN:      326.18d {+21h 44m 44s}  -16.12d {-16d 07' 03"}
MOON_DIST:        83.11 [deg]
MOON_ILLUM:      9 [%]
GAL_COORDS:      140.08,-22.05 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       44.20, 23.25 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Source List.  
COMMENTS:        All 4 attachments are included.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 09 Jan 19 05:31:38 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     882747,   Seg_Num: 0
POINT_RA:         33.180d {+02h 12m 43s} (J2000)
POINT_DEC:       +38.099d {+38d 05' 57"} (J2000)
ROLL:            259.488d
IMG_START_DATE:  18492 TJD;     9 DOY;   19/01/09
IMG_START_TIME:  19633.21 SOD {05:27:13.21} UT,   871.4 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     568704455
X_OFFSET:        675 [pixels]
Y_OFFSET:        972 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       835
Y_GRB_POS:       1132
BINNING_INDEX:   1
IM_URL:          sw00882747000msuni0894.fits
SUN_POSTN:       290.20d {+19h 20m 47s}  -22.14d {-22d 08' 17"}
SUN_DIST:        113.59 [deg]   Sun_angle= -6.9 [hr] (East of Sun)
MOON_POSTN:      326.19d {+21h 44m 46s}  -16.12d {-16d 06' 55"}
MOON_DIST:        83.10 [deg]
MOON_ILLUM:      9 [%]
GAL_COORDS:      140.08,-22.05 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       44.20, 23.25 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Image.  
COMMENTS:        The GRB Position came from the Window Position in the Mode Command.  
COMMENTS:        The image has 2x2 binning (compression).

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 09 Jan 19 05:31:48 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     882747,   Seg_Num: 0
POINT_RA:         33.180d {+02h 12m 43s} (J2000)
POINT_DEC:       +38.099d {+38d 05' 57"} (J2000)
ROLL:            259.488d
IMG_START_DATE:  18492 TJD;     9 DOY;   19/01/09
IMG_START_TIME:  19633.21 SOD {05:27:13.21} UT,   871.4 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     568704455
X_OFFSET:        675 [pixels]
Y_OFFSET:        972 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       835
Y_GRB_POS:       1132
BINNING_INDEX:   1
IM_URL:          sw00882747000msuni0894.fits
SUN_POSTN:       290.20d {+19h 20m 47s}  -22.14d {-22d 08' 17"}
SUN_DIST:        113.59 [deg]   Sun_angle= -6.9 [hr] (East of Sun)
MOON_POSTN:      326.19d {+21h 44m 46s}  -16.12d {-16d 06' 54"}
MOON_DIST:        83.10 [deg]
MOON_ILLUM:      9 [%]
GAL_COORDS:      140.08,-22.05 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:       44.20, 23.25 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Image.  
COMMENTS:        The GRB Position came from the Window Position in the Mode Command.  
COMMENTS:        The image has 2x2 binning (compression).  
COMMENTS:        All 4 attachments are included.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Wed 09 Jan 19 05:31:02 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     882747,   Seg_Num: 0
GRB_RA:           33.2019d {+02h 12m 48.45s} (J2000),
                  33.4914d {+02h 13m 57.92s} (current),
                  32.4435d {+02h 09m 46.44s} (1950)
GRB_DEC:         +38.1079d {+38d 06' 28.4"} (J2000),
                 +38.1964d {+38d 11' 46.9"} (current),
                 +37.8739d {+37d 52' 26.1"} (1950)
GRB_ERROR:       2.1 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  18492 TJD;     9 DOY;   19/01/09
IMG_START_TIME:  19247.00 SOD {05:20:47.00} UT,   485.2 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       290.19d {+19h 20m 47s}  -22.14d {-22d 08' 17"}
SUN_DIST:        113.61 [deg]   Sun_angle= -6.9 [hr] (East of Sun)
MOON_POSTN:      326.19d {+21h 44m 45s}  -16.12d {-16d 07' 00"}
MOON_DIST:        83.13 [deg]
MOON_ILLUM:      9 [%]
GAL_COORDS:      140.10,-22.04 [deg] galactic lon,lat of the burst
ECL_COORDS:       44.22, 23.26 [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 Circular #23643
P.A. Evans (U. Leicester) reports on behalf of the Swift-XRT team:
Using promptly downlinked XRT event data for GRB 190109A, we find an enhanced XRT position of the afterglow: RA, Dec: 33.2020, 38.1081 which is equivalent to:
```
   RA (J2000)  = 02 12 48.48
   Dec (J2000) = +38 06 29.1
```
with an uncertainty of 2.0 arcseconds (radius, 90% confidence). Analysis of the promptly available data is online at http://www.swift.ac.uk/sper/882747.
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 #23644
J.P. Osborne, A.P. Beardmore, P.A. Evans and M.R. Goad (U. Leicester) report on behalf of the Swift-XRT team.
Using 1045 s of XRT Photon Counting mode data and 1 UVOT images for GRB 190109A, 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 = 33.20216, +38.10852 which is equivalent to:
```
RA (J2000): 02h 12m 48.52s
Dec (J2000): +38d 06' 30.7"
```
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 #23645
A.P. Beardmore (U. Leicester), P.A. Evans (U. Leicester), A. D'Ai (INAF-IASFPA), A. Melandri (INAF-OAB), P. D'Avanzo (INAF-OAB), A. Tohuvavohu (PSU), S. J. LaPorte (PSU), J.A. Kennea (PSU), J.P. Osborne (U. Leicester) and J.D. Gropp report on behalf of the Swift-XRT team:
We have analysed 6.1 ks of XRT data for GRB 190109A (Gropp et al. GCN Circ. 23642), from 175 s to 13.0 ks after the BAT trigger. The data comprise 291 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. 23643).
The late-time light curve (from T0+4.8 ks) can be modelled with a power-law decay with a decay index of alpha=0.8 (+/-0.3).
A spectrum formed from the WT mode data can be fitted with an absorbed power-law with a photon spectral index of 1.87 (+/-0.04). The best-fitting absorption column is 9.5 (+1.3, -1.2) x 10^20 cm^-2, in excess of the Galactic value of 5.1 x 10^20 cm^-2 (Willingale et al. 2013). The PC mode spectrum has a photon index of 1.88 (+0.11, -0.09) and a best-fitting absorption column consistent with the Galactic value. The counts to observed (unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 3.5 x 10^-11 (3.8 x 10^-11) erg cm^-2 count^-1.
A summary of the PC-mode spectrum is thus:
```
Total column:	     5.1 (+2.1, -0.0) x 10^20 cm^-2
Galactic foreground: 5.1 x 10^20 cm^-2
Excess significance: <1.6 sigma
Photon index:	     1.88 (+0.11, -0.09)
```
If the light curve continues to decay with a power-law decay index of 0.8, the count rate at T+24 hours will be 0.010 count s^-1, corresponding to an observed (unabsorbed) 0.3-10 keV flux of 3.6 x 10^-13 (4.0 x 10^-13) erg cm^-2 s^-1.
The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00882747.
This circular is an official product of the Swift-XRT team.
GCN Circular #23649
M. Oeda, R. Adachi, K. L. Murata, R. Itoh, Y. Tachibana, S. Harita, K. Morita, K.Shiraishi, K. Iida, M. Niwano, Y. Yatsu, and N. Kawai (TokyoTech) report on behalf of the MITSuME collaboration:
We searched for the optical counterpart of GRB 190109A (M. J. Moss et al.,GCN Circular #23642) with the optical three color (g', Rc, and Ic) CCD cameras attached to the MITSuME 50 cm telescope of Akeno Observatory,Yamanashi, Japan.
The observation started on 08:18:30.05 UT. We did not find any new point source within the enhanced XRT circle (P.A. Evans et al., GCN Circular #23643) in all three bands. We obtained following 3 sigma limits for the magnitudes.
```
T0+[hour]    MID-UT      T-EXP[sec]    g'       Rc        Ic
-------------------------------------------------------------------------------------------------------
3.097       8:42:32.91          1140      >16.23     >15.42     >15.34
-------------------------------------------------------------------------------------------------------
T0+ : Elapsed time after the burst
T-EXP: Total Exposure time
```
We used GSC2.3 catalog for flux calibration.
GCN Circular #23653
T. Sakamoto (AGU), S. D. Barthelmy (GSFC), J. R. Cummings (CPI), J. D. Gropp (PSU), H. A. Krimm (NSF/USRA), A. Y. Lien (GSFC/UMBC), C. B. Markwardt (GSFC), D. M. Palmer (LANL), 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 190109A (trigger #882747) (Gropp, et al., GCN Circ. 23642). The BAT ground-calculated position is RA, Dec = 33.213, 38.111 deg, which is
```
   RA(J2000)  =  02h 12m 51.2s 
   Dec(J2000) = +38d 06' 39.5" 
```
with an uncertainty of 1.0 arcmin, (radius, sys+stat, 90% containment). The partial coding was 28%.
The mask-weighted light curve shows several overlapping peaks starting at ~T+1 sec, peaking at ~T+40 sec, and returning to baseline at ~T+200 sec. T90 (15-350 keV) is 115.0 +- 33.5 sec (estimated error including systematics).
The time-averaged spectrum from T+5.86 to T+205.36 sec (with a 1.03 sec gap in the data at T+111.97 sec) is best fit by a power law with an exponential cutoff. This fit gives a photon index 0.36 +- 0.47, and Epeak of 49.7 +- 4.0 keV (chi squared 46.05 for 56 d.o.f.). For this model the total fluence in the 15-150 keV band is 5.5 +- 0.3 x 10^-6 erg/cm2 and the 1-sec peak flux measured from T+38.82 sec in the 15-150 keV band is 1.9 +- 0.3 ph/cm2/sec. A fit to a simple power law gives a photon index of 1.86 +- 0.08 (chi squared 87.76 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/882747/BA/
GCN Circular #23654
S. Belkin (IKI), E. Klunko (ISTP), A. Pozanenko (IKI), E. Mazaeva (IKI), A. Volnova (IKI) report on behalf of IKI-FuN:
We observed the field of the GRB 190109A (Sbarufatti et al., GCN 23648) with AZT-33IK telescope of Sayan observatory (Mondy). We obtained several images in R-filter starting on Jan. 09 (UT) 12:17:03, i.e. 21 minutes after the burst trigger. We do not detect any object within enhanced Swift-XRT position (Beardmore et al., GCN 23652). Preliminary photometry of the field is following.
```
Date        UT start  t-T0      Filter Exp.   OT      Err.  UL(3sigma)
                       (mid, days)      (s)

2019-01-09  12:17:03  0.02463    R     1900   n/d     n/d   22.6
```
The photometry is based on several nearby USNO-B1.0 stars.
GCN Circular #23658
A. von Kienlin (MPE) reports on behalf of the Fermi GBM Team:
"At 05:12:49.45 UT on 09 January 2019, the Fermi Gamma-Ray Burst Monitor triggered and located GRB 190109A (trigger 568703574 / 190109217), which was also detected by the Swift/BAT (Gropp et al. 2019, GCN 23642) The GBM on-ground location is consistent with the Swift position.
The angle from the Fermi LAT boresight at the GBM trigger time is 65 degrees.
The GBM light curve shows a structured emission with a duration (T90) of about 120 s (50-300 keV). The time-averaged spectrum from T0-4.096 s to T0+114.690 s is best fit by a Band function with Epeak = 46.8 +/- 2.2 keV, alpha = 1.3 +/- 0.3, and beta = -2.71 +/- 0.13
The event fluence (10-1000 keV) in this time interval is (7.6 +/- 0.4)E-06 erg/cm^2. The 1.024-sec peak photon flux measured starting from T0+30.91 s in the 10-1000 keV band is 2.6 +/- 0.2 ph/s/cm^2.
The spectral analysis results presented above are preliminary; final results will be published in the GBM GRB Catalog."
GCN Circular #23663
GRB 190109A: Swift/UVOT Upper Limits
K. K. Simpson (PSU) and J. D. Gropp (PSU) report on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 190109A 181 s after the BAT trigger (Gropp et al., GCN Circ. 23642). No optical afterglow consistent with the XRT position (Osborne et al. GCN Circ. 23644) 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           181          331          147         >99.0
u_FC               340          590          246         >17.3
white              181        12997         1291         >99.0
v                  670         6867          490         >16.8
b                  596        18739         1727         >18.6
u                  340        24226         2551         >17.5
w1                 720        23954         2223         >17.4
m2                 695        23048         1357         >18.1
w2                 646         6662          491         >17.9
```
The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.05 in the direction of the burst (Schlegel et al. 1998).
GCN Circular #23673
The values for magnitude UVOT's white filter were listed as 99th magnitude in the previous circular and have been corrected here.
GRB 190109A: Swift/UVOT Upper Limits
K. K. Simpson (PSU) and J. D. Gropp (PSU) report on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 190109A 181 s after the BAT trigger (Gropp et al., GCN Circ. 23642). No optical afterglow consistent with the XRT position (Osborne et al. GCN Circ. 23644) 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           181          331          147         >21.60
white              181        12997         1291         >20.27
v                  670         6867          490         >16.8
b                  596        18739         1727         >18.6
u                  340        24226         2551         >17.5
w1                 720        23954         2223         >17.4
m2                 695        23048         1357         >18.1
w2                 646         6662          491         >17.9
```
The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.05 in the direction of the burst (Schlegel et al. 1998).

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Jochen Greiner, last update: 11-Jan-2019 [Disclaimer]