Gamma-ray Burst 090419

(All information courtesy of the instrument teams.)

Previous IAU Circulars

none

Results of Observations

GCN/BACODINE POSITION NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 19 Apr 09 13:44:48 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     349592,   Seg_Num: 0
GRB_RA:          196.976d {+13h 07m 54s} (J2000),
                 197.154d {+13h 08m 37s} (current),
                 196.030d {+13h 04m 07s} (1950)
GRB_DEC:         -75.609d {-75d 36' 30"} (J2000),
                 -75.658d {-75d 39' 28"} (current),
                 -75.342d {-75d 20' 29"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       0 [cnts]    Image_Peak=2106 [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:        14940 TJD;   109 DOY;   09/04/19
GRB_TIME:        49411.32 SOD {13:43:31.32} UT
GRB_PHI:         -111.64 [deg]
GRB_THETA:        11.35 [deg]
SOLN_STATUS:     0x13
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    8.88 [sigma]
MERIT_PARAMS:     +1  +0  +0  +6  +1  -1  +0  +0 +43  +0 
SUN_POSTN:        27.56d {+01h 50m 14s}  +11.34d {+11d 20' 31"}
SUN_DIST:        115.43 [deg]   Sun_angle= -11.3 [hr] (East of Sun)
MOON_POSTN:      323.50d {+21h 34m 00s}  -13.00d {-13d 00' 05"}
MOON_DIST:        85.70 [deg]
MOON_ILLUM:      31 [%]
GAL_COORDS:      303.98,-12.77 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      242.25,-59.30 [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 = 87.41,-20.09 [deg].

red DSS finding chart ps-file

GCN NOTICE

TITLE:        GCN/SIMBAD_NED NOTICE
NOTICE_DATE:  Sun Apr 19 13:44:54 UTC 2009
NOTICE_TYPE:  Swift-BAT Position search
TRIGGER_NUM:  349592
RA:           196.9758 (J2000)
DEC:          -75.6086 (J2000)
 
SIMBAD search for BAT_RA,Dec=196.9758,-75.6086,radius=10.0arcmin
 
Num   RA         Dec                    Name                        Type  Num_Pub  Distance

 1 197.00488750 -75.59166306                   HD 113728               IR   0      1.11
 2 197.00488750 -75.59166306                   HD 113728               IR   0      1.11
 3 197.15125000 -75.51138889             IRAS 13048-7514               IR   0      6.40
 
 
 
NED search for BAT_RA,Dec=196.9758,-75.6086,radius=10.0arcmin
 
Num    RA           Dec       Name                           Type      Distance

 1   197.037958   -75.627333  SUMSS J130809-753738          , RadioS   1.50
 2   197.244792   -75.568306  2MASX J13085875-7534058       , IrS      4.70
 3   196.536000   -75.668250  2MASX J13060868-7540059       , IrS      7.50
 4   197.063042   -75.763222  SUMSS J130815-754547          , RadioS   9.40

GCN NOTICE

TITLE:        GCN/SIMBAD_NED NOTICE
NOTICE_DATE:  Sun Apr 19 13:46:10 UTC 2009
NOTICE_TYPE:  Swift-XRT Position search
TRIGGER_NUM:  349592
RA:           196.9292 (J2000)
DEC:          -75.6058 (J2000)
 
SIMBAD search for XRT_RA,Dec=196.9292,-75.6058,radius=1.0arcmin
 
Num   RA         Dec                    Name                        Type  Num_Pub  Distance

 
 
NED search for XRT_RA,Dec=196.9292,-75.6058,radius=1.0arcmin
 
Num    RA           Dec       Name                           Type      Distance

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 19 Apr 09 13:46:07 UT
NOTICE_TYPE:     Swift-XRT Position
TRIGGER_NUM:     349592,   Seg_Num: 0
GRB_RA:          196.9292d {+13h 07m 43.00s} (J2000),
                 197.1075d {+13h 08m 25.79s} (current),
                 195.9844d {+13h 03m 56.26s} (1950)
GRB_DEC:         -75.6058d {-75d 36' 20.8"} (J2000),
                 -75.6553d {-75d 39' 19.0"} (current),
                 -75.3388d {-75d 20' 19.6"} (1950)
GRB_ERROR:       6.2 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       5.55e-10 [erg/cm2/sec]
GRB_SIGNIF:      4.69 [sigma]
IMG_START_DATE:  14940 TJD;   109 DOY;   09/04/19
IMG_START_TIME:  49530.98 SOD {13:45:30.98} UT,   119.7 [sec] since BAT Trigger Time
TAM[0-3]:        327.68 237.22 261.52 243.40
AMPLIFIER:       2
WAVEFORM:        134
SUN_POSTN:        27.56d {+01h 50m 15s}  +11.34d {+11d 20' 32"}
SUN_DIST:        115.43 [deg]   Sun_angle= -11.3 [hr] (East of Sun)
MOON_POSTN:      323.51d {+21h 34m 02s}  -13.00d {-12d 59' 49"}
MOON_DIST:        85.72 [deg]
MOON_ILLUM:      31 [%]
GAL_COORDS:      303.97,-12.77 [deg] galactic lon,lat of the burst
ECL_COORDS:      242.23,-59.30 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.  
COMMENTS:        The XRT position is 0.71 arcmin from the BAT position.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 19 Apr 09 13:46:24 UT
NOTICE_TYPE:     Swift-XRT Processed Image
TRIGGER_NUM:     349592,   Seg_Num: 0
GRB_RA:          196.9292d {+13h 07m 43.0s} (J2000),
                 197.1075d {+13h 08m 25.7s} (current),
                 195.9844d {+13h 03m 56.2s} (1950)
GRB_DEC:         -75.6058d {-75d 36' 20.8"} (J2000),
                 -75.6553d {-75d 39' 19.0"} (current),
                 -75.3388d {-75d 20' 19.6"} (1950)
GRB_ERROR:       6.1 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       22 [cnts]
IMG_START_DATE:  14940 TJD;   109 DOY;   09/04/19
IMG_START_TIME:  49530.98 SOD {13:45:30.98} UT,   119.7 [sec] since BAT Trigger Time
CENTROID_X:      281.09,  raw= 281  [pixels]
CENTROID_Y:      278.79,  raw= 279  [pixels]
ROLL:            191.47 [deg]
GAIN:            1
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   -45.26
GRB_POS_XRT_Z:   -49.99
IMAGE_URL:       sw00349592000msxps_rw.img
SUN_POSTN:        27.56d {+01h 50m 15s}  +11.34d {+11d 20' 32"}
SUN_DIST:        115.43 [deg]   Sun_angle= -11.3 [hr] (East of Sun)
MOON_POSTN:      323.51d {+21h 34m 03s}  -13.00d {-12d 59' 45"}
MOON_DIST:        85.72 [deg]
MOON_ILLUM:      31 [%]
GAL_COORDS:      303.97,-12.77 [deg] galactic lon,lat of the burst
ECL_COORDS:      242.23,-59.30 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Processed Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 19 Apr 09 13:46:17 UT
NOTICE_TYPE:     Swift-XRT Image
TRIGGER_NUM:     349592,   Seg_Num: 0
GRB_RA:          196.9292d {+13h 07m 43.0s} (J2000),
                 197.1075d {+13h 08m 25.7s} (current),
                 195.9844d {+13h 03m 56.2s} (1950)
GRB_DEC:         -75.6058d {-75d 36' 20.8"} (J2000),
                 -75.6553d {-75d 39' 19.0"} (current),
                 -75.3388d {-75d 20' 19.6"} (1950)
GRB_ERROR:       6.1 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       22 [cnts]
IMG_START_DATE:  14940 TJD;   109 DOY;   09/04/19
IMG_START_TIME:  49530.98 SOD {13:45:30.98} UT,   119.7 [sec] since BAT Trigger Time
CENTROID_X:      281.09,  raw= 281  [pixels]
CENTROID_Y:      278.79,  raw= 279  [pixels]
ROLL:            191.47 [deg]
GAIN:            1
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   -45.26
GRB_POS_XRT_Z:   -49.99
IMAGE_URL:       sw00349592000msxps_rw.img
SUN_POSTN:        27.56d {+01h 50m 15s}  +11.34d {+11d 20' 32"}
SUN_DIST:        115.43 [deg]   Sun_angle= -11.3 [hr] (East of Sun)
MOON_POSTN:      323.51d {+21h 34m 03s}  -13.00d {-12d 59' 47"}
MOON_DIST:        85.72 [deg]
MOON_ILLUM:      31 [%]
GAL_COORDS:      303.97,-12.77 [deg] galactic lon,lat of the burst
ECL_COORDS:      242.23,-59.30 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 19 Apr 09 13:47:38 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     349592,   Seg_Num: 0
GRB_RA:          196.976d {+13h 07m 54s} (J2000),
                 197.154d {+13h 08m 37s} (current),
                 196.030d {+13h 04m 07s} (1950)
GRB_DEC:         -75.609d {-75d 36' 30"} (J2000),
                 -75.658d {-75d 39' 28"} (current),
                 -75.342d {-75d 20' 29"} (1950)
GRB_DATE:        14940 TJD;   109 DOY;   09/04/19
GRB_TIME:        49411.32 SOD {13:43:31.32} UT
TRIGGER_INDEX:   20000
GRB_PHI:         -111.64 [deg]
GRB_THETA:        11.35 [deg]
DELTA_TIME:      0.00 [sec]
TRIGGER_DUR:     64.000 [sec] 
SOLN_STATUS:     0x13
RATE_SIGNIF:     0.00 [sigma]
IMAGE_SIGNIF:    8.88 [sigma]
LC_URL:          sw00349592000msb.lc
SUN_POSTN:        27.56d {+01h 50m 15s}  +11.34d {+11d 20' 33"}
SUN_DIST:        115.43 [deg]   Sun_angle= -11.3 [hr] (East of Sun)
MOON_POSTN:      323.52d {+21h 34m 05s}  -12.99d {-12d 59' 30"}
MOON_DIST:        85.72 [deg]
MOON_ILLUM:      31 [%]
GAL_COORDS:      303.98,-12.77 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      242.25,-59.30 [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 = 87.41,-20.09 [deg].

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 19 Apr 09 13:48:33 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     349592,   Seg_Num: 0
POINT_RA:        196.990d {+13h 07m 58s} (J2000)
POINT_DEC:       -75.595d {-75d 35' 42"} (J2000)
POINT_ROLL:      191.467d
IMG_START_DATE:  14940 TJD;   109 DOY;   09/04/19
IMG_START_TIME:  49538.10 SOD {13:45:38.10} UT,   126.8 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        2.675
N_STARS:         190
X_OFFSET:        576 [pixels]
Y_OFFSET:        504 [pixels]
X_MAX:           1535 [pixels]
Y_MAX:           1463 [pixels]
DET_THRESH:      13
PHOTO_THRESH:    7
SL_URL:          sw00349592000msufc0126.fits
SUN_POSTN:        27.56d {+01h 50m 15s}  +11.34d {+11d 20' 34"}
SUN_DIST:        115.44 [deg]   Sun_angle= -11.3 [hr] (East of Sun)
MOON_POSTN:      323.53d {+21h 34m 07s}  -12.99d {-12d 59' 19"}
MOON_DIST:        85.73 [deg]
MOON_ILLUM:      31 [%]
GAL_COORDS:      303.98,-12.76 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      242.24,-59.29 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 19 Apr 09 13:49:04 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     349592,   Seg_Num: 0
POINT_RA:        196.990d {+13h 07m 58s} (J2000)
POINT_DEC:       -75.595d {-75d 35' 42"} (J2000)
POINT_ROLL:      191.467d
IMG_START_DATE:  14940 TJD;   109 DOY;   09/04/19
IMG_START_TIME:  49538.10 SOD {13:45:38.10} UT,   126.8 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        2.675
N_STARS:         190
X_OFFSET:        576 [pixels]
Y_OFFSET:        504 [pixels]
X_MAX:           1535 [pixels]
Y_MAX:           1463 [pixels]
DET_THRESH:      13
PHOTO_THRESH:    7
SL_URL:          sw00349592000msufc0126.fits
SUN_POSTN:        27.56d {+01h 50m 15s}  +11.34d {+11d 20' 35"}
SUN_DIST:        115.44 [deg]   Sun_angle= -11.3 [hr] (East of Sun)
MOON_POSTN:      323.53d {+21h 34m 08s}  -12.99d {-12d 59' 13"}
MOON_DIST:        85.73 [deg]
MOON_ILLUM:      31 [%]
GAL_COORDS:      303.98,-12.76 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      242.24,-59.29 [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:     Sun 19 Apr 09 13:50:15 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     349592,   Seg_Num: 0
POINT_RA:        196.990d {+13h 07m 58s} (J2000)
POINT_DEC:       -75.595d {-75d 35' 42"} (J2000)
ROLL:            191.467d
IMG_START_DATE:  14940 TJD;   109 DOY;   09/04/19
IMG_START_TIME:  49538.10 SOD {13:45:38.10} UT,   126.8 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     261841542
X_OFFSET:        934 [pixels]
Y_OFFSET:        896 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1094
Y_GRB_POS:       1056
BINNING_INDEX:   1
IM_URL:          sw00349592000msuni0131.fits
SUN_POSTN:        27.56d {+01h 50m 15s}  +11.34d {+11d 20' 36"}
SUN_DIST:        115.45 [deg]   Sun_angle= -11.3 [hr] (East of Sun)
MOON_POSTN:      323.54d {+21h 34m 10s}  -12.98d {-12d 58' 58"}
MOON_DIST:        85.73 [deg]
MOON_ILLUM:      31 [%]
GAL_COORDS:      303.98,-12.76 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      242.24,-59.29 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Image.  
COMMENTS:        The GRB Position came from the XRT Position Command.  
COMMENTS:        The image has 2x2 binning (compression).

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 19 Apr 09 13:50:40 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     349592,   Seg_Num: 0
POINT_RA:        196.990d {+13h 07m 58s} (J2000)
POINT_DEC:       -75.595d {-75d 35' 42"} (J2000)
ROLL:            191.467d
IMG_START_DATE:  14940 TJD;   109 DOY;   09/04/19
IMG_START_TIME:  49538.10 SOD {13:45:38.10} UT,   126.8 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     261841542
X_OFFSET:        934 [pixels]
Y_OFFSET:        896 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1094
Y_GRB_POS:       1056
BINNING_INDEX:   1
IM_URL:          sw00349592000msuni0131.fits
SUN_POSTN:        27.56d {+01h 50m 15s}  +11.34d {+11d 20' 36"}
SUN_DIST:        115.45 [deg]   Sun_angle= -11.3 [hr] (East of Sun)
MOON_POSTN:      323.55d {+21h 34m 11s}  -12.98d {-12d 58' 53"}
MOON_DIST:        85.74 [deg]
MOON_ILLUM:      31 [%]
GAL_COORDS:      303.98,-12.76 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      242.24,-59.29 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Image.  
COMMENTS:        The GRB Position came from the XRT Position Command.  
COMMENTS:        The image has 2x2 binning (compression).  
COMMENTS:        All 4 attachments are included.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 19 Apr 09 13:53:59 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     349592,   Seg_Num: 0
POINT_RA:        196.988d {+13h 07m 57s} (J2000)
POINT_DEC:       -75.593d {-75d 35' 35"} (J2000)
POINT_ROLL:      191.469d
IMG_START_DATE:  14940 TJD;   109 DOY;   09/04/19
IMG_START_TIME:  49696.09 SOD {13:48:16.09} UT,   284.8 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        0.814
N_STARS:         190
X_OFFSET:        614 [pixels]
Y_OFFSET:        576 [pixels]
X_MAX:           1573 [pixels]
Y_MAX:           1535 [pixels]
DET_THRESH:      8
PHOTO_THRESH:    3
SL_URL:          sw00349592000msufc0284.fits
SUN_POSTN:        27.57d {+01h 50m 16s}  +11.34d {+11d 20' 39"}
SUN_DIST:        115.45 [deg]   Sun_angle= -11.3 [hr] (East of Sun)
MOON_POSTN:      323.57d {+21h 34m 18s}  -12.97d {-12d 58' 13"}
MOON_DIST:        85.75 [deg]
MOON_ILLUM:      31 [%]
GAL_COORDS:      303.98,-12.76 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      242.23,-59.28 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 19 Apr 09 13:54:15 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     349592,   Seg_Num: 0
POINT_RA:        196.988d {+13h 07m 57s} (J2000)
POINT_DEC:       -75.593d {-75d 35' 35"} (J2000)
ROLL:            191.469d
IMG_START_DATE:  14940 TJD;   109 DOY;   09/04/19
IMG_START_TIME:  49696.09 SOD {13:48:16.09} UT,   284.8 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     261841700
X_OFFSET:        934 [pixels]
Y_OFFSET:        896 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1094
Y_GRB_POS:       1056
BINNING_INDEX:   1
IM_URL:          sw00349592000msuni0289.fits
SUN_POSTN:        27.57d {+01h 50m 16s}  +11.34d {+11d 20' 39"}
SUN_DIST:        115.45 [deg]   Sun_angle= -11.3 [hr] (East of Sun)
MOON_POSTN:      323.58d {+21h 34m 18s}  -12.97d {-12d 58' 10"}
MOON_DIST:        85.76 [deg]
MOON_ILLUM:      31 [%]
GAL_COORDS:      303.98,-12.76 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      242.23,-59.28 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Image.  
COMMENTS:        The GRB Position came from the XRT Position Command.  
COMMENTS:        The image has 2x2 binning (compression).

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 19 Apr 09 13:54:40 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     349592,   Seg_Num: 0
POINT_RA:        196.988d {+13h 07m 57s} (J2000)
POINT_DEC:       -75.593d {-75d 35' 35"} (J2000)
ROLL:            191.469d
IMG_START_DATE:  14940 TJD;   109 DOY;   09/04/19
IMG_START_TIME:  49696.09 SOD {13:48:16.09} UT,   284.8 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     261841700
X_OFFSET:        934 [pixels]
Y_OFFSET:        896 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1094
Y_GRB_POS:       1056
BINNING_INDEX:   1
IM_URL:          sw00349592000msuni0289.fits
SUN_POSTN:        27.57d {+01h 50m 16s}  +11.34d {+11d 20' 39"}
SUN_DIST:        115.45 [deg]   Sun_angle= -11.3 [hr] (East of Sun)
MOON_POSTN:      323.58d {+21h 34m 19s}  -12.97d {-12d 58' 04"}
MOON_DIST:        85.76 [deg]
MOON_ILLUM:      31 [%]
GAL_COORDS:      303.98,-12.76 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      242.23,-59.28 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Image.  
COMMENTS:        The GRB Position came from the XRT Position Command.  
COMMENTS:        The image has 2x2 binning (compression).  
COMMENTS:        If you have elected to receive attachments:  
COMMENTS:        The uvot_catalog_image.fits.gz file does not exist; skipping the attachment.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 19 Apr 09 13:54:47 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     349592,   Seg_Num: 0
POINT_RA:        196.988d {+13h 07m 57s} (J2000)
POINT_DEC:       -75.593d {-75d 35' 35"} (J2000)
POINT_ROLL:      191.469d
IMG_START_DATE:  14940 TJD;   109 DOY;   09/04/19
IMG_START_TIME:  49696.09 SOD {13:48:16.09} UT,   284.8 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        0.814
N_STARS:         190
X_OFFSET:        614 [pixels]
Y_OFFSET:        576 [pixels]
X_MAX:           1573 [pixels]
Y_MAX:           1535 [pixels]
DET_THRESH:      8
PHOTO_THRESH:    3
SL_URL:          sw00349592000msufc0284.fits
SUN_POSTN:        27.57d {+01h 50m 16s}  +11.34d {+11d 20' 39"}
SUN_DIST:        115.45 [deg]   Sun_angle= -11.3 [hr] (East of Sun)
MOON_POSTN:      323.58d {+21h 34m 19s}  -12.97d {-12d 58' 03"}
MOON_DIST:        85.76 [deg]
MOON_ILLUM:      31 [%]
GAL_COORDS:      303.98,-12.76 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      242.23,-59.28 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Source List.  
COMMENTS:        All 4 attachments are included.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 19 Apr 09 13:48:33 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     349592,   Seg_Num: 0
POINT_RA:        196.990d {+13h 07m 58s} (J2000)
POINT_DEC:       -75.595d {-75d 35' 42"} (J2000)
POINT_ROLL:      191.467d
IMG_START_DATE:  14940 TJD;   109 DOY;   09/04/19
IMG_START_TIME:  49538.10 SOD {13:45:38.10} UT,   126.8 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        2.675
N_STARS:         190
X_OFFSET:        576 [pixels]
Y_OFFSET:        504 [pixels]
X_MAX:           1535 [pixels]
Y_MAX:           1463 [pixels]
DET_THRESH:      13
PHOTO_THRESH:    7
SL_URL:          sw00349592000msufc0126.fits
SUN_POSTN:        27.56d {+01h 50m 15s}  +11.34d {+11d 20' 34"}
SUN_DIST:        115.44 [deg]   Sun_angle= -11.3 [hr] (East of Sun)
MOON_POSTN:      323.53d {+21h 34m 07s}  -12.99d {-12d 59' 19"}
MOON_DIST:        85.73 [deg]
MOON_ILLUM:      31 [%]
GAL_COORDS:      303.98,-12.76 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      242.24,-59.29 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 19 Apr 09 13:53:59 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     349592,   Seg_Num: 0
POINT_RA:        196.988d {+13h 07m 57s} (J2000)
POINT_DEC:       -75.593d {-75d 35' 35"} (J2000)
POINT_ROLL:      191.469d
IMG_START_DATE:  14940 TJD;   109 DOY;   09/04/19
IMG_START_TIME:  49696.09 SOD {13:48:16.09} UT,   284.8 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        0.814
N_STARS:         190
X_OFFSET:        614 [pixels]
Y_OFFSET:        576 [pixels]
X_MAX:           1573 [pixels]
Y_MAX:           1535 [pixels]
DET_THRESH:      8
PHOTO_THRESH:    3
SL_URL:          sw00349592000msufc0284.fits
SUN_POSTN:        27.57d {+01h 50m 16s}  +11.34d {+11d 20' 39"}
SUN_DIST:        115.45 [deg]   Sun_angle= -11.3 [hr] (East of Sun)
MOON_POSTN:      323.57d {+21h 34m 18s}  -12.97d {-12d 58' 13"}
MOON_DIST:        85.75 [deg]
MOON_ILLUM:      31 [%]
GAL_COORDS:      303.98,-12.76 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      242.23,-59.28 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 19 Apr 09 14:01:25 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     349592,   Seg_Num: 0
POINT_RA:        196.988d {+13h 07m 57s} (J2000)
POINT_DEC:       -75.593d {-75d 35' 34"} (J2000)
POINT_ROLL:      191.469d
IMG_START_DATE:  14940 TJD;   109 DOY;   09/04/19
IMG_START_TIME:  50275.38 SOD {13:57:55.38} UT,   864.1 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        2.653
N_STARS:         190
X_OFFSET:        374 [pixels]
Y_OFFSET:        336 [pixels]
X_MAX:           1813 [pixels]
Y_MAX:           1775 [pixels]
DET_THRESH:      13
PHOTO_THRESH:    7
SL_URL:          sw00349592000msufc0864.fits
SUN_POSTN:        27.57d {+01h 50m 17s}  +11.35d {+11d 20' 45"}
SUN_DIST:        115.45 [deg]   Sun_angle= -11.3 [hr] (East of Sun)
MOON_POSTN:      323.63d {+21h 34m 32s}  -12.95d {-12d 56' 42"}
MOON_DIST:        85.79 [deg]
MOON_ILLUM:      31 [%]
GAL_COORDS:      303.98,-12.76 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      242.23,-59.28 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 19 Apr 09 14:01:59 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     349592,   Seg_Num: 0
POINT_RA:        196.988d {+13h 07m 57s} (J2000)
POINT_DEC:       -75.593d {-75d 35' 34"} (J2000)
POINT_ROLL:      191.469d
IMG_START_DATE:  14940 TJD;   109 DOY;   09/04/19
IMG_START_TIME:  50275.38 SOD {13:57:55.38} UT,   864.1 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        2.653
N_STARS:         190
X_OFFSET:        374 [pixels]
Y_OFFSET:        336 [pixels]
X_MAX:           1813 [pixels]
Y_MAX:           1775 [pixels]
DET_THRESH:      13
PHOTO_THRESH:    7
SL_URL:          sw00349592000msufc0864.fits
SUN_POSTN:        27.57d {+01h 50m 17s}  +11.35d {+11d 20' 46"}
SUN_DIST:        115.45 [deg]   Sun_angle= -11.3 [hr] (East of Sun)
MOON_POSTN:      323.64d {+21h 34m 33s}  -12.94d {-12d 56' 35"}
MOON_DIST:        85.79 [deg]
MOON_ILLUM:      31 [%]
GAL_COORDS:      303.98,-12.76 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      242.23,-59.28 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Source List.  
COMMENTS:        All 4 attachments are included.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 19 Apr 09 14:03:07 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     349592,   Seg_Num: 0
POINT_RA:        196.988d {+13h 07m 57s} (J2000)
POINT_DEC:       -75.593d {-75d 35' 34"} (J2000)
ROLL:            191.469d
IMG_START_DATE:  14940 TJD;   109 DOY;   09/04/19
IMG_START_TIME:  50275.38 SOD {13:57:55.38} UT,   864.1 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     261842280
X_OFFSET:        933 [pixels]
Y_OFFSET:        895 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1093
Y_GRB_POS:       1055
BINNING_INDEX:   1
IM_URL:          sw00349592000msuni0869.fits
SUN_POSTN:        27.57d {+01h 50m 17s}  +11.35d {+11d 20' 47"}
SUN_DIST:        115.45 [deg]   Sun_angle= -11.3 [hr] (East of Sun)
MOON_POSTN:      323.65d {+21h 34m 35s}  -12.94d {-12d 56' 21"}
MOON_DIST:        85.80 [deg]
MOON_ILLUM:      31 [%]
GAL_COORDS:      303.98,-12.76 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      242.23,-59.28 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Image.  
COMMENTS:        The GRB Position came from the Window Position in the Mode Command.  
COMMENTS:        The image has 2x2 binning (compression).

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 19 Apr 09 14:03:25 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     349592,   Seg_Num: 0
POINT_RA:        196.988d {+13h 07m 57s} (J2000)
POINT_DEC:       -75.593d {-75d 35' 34"} (J2000)
ROLL:            191.469d
IMG_START_DATE:  14940 TJD;   109 DOY;   09/04/19
IMG_START_TIME:  50275.38 SOD {13:57:55.38} UT,   864.1 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     261842280
X_OFFSET:        933 [pixels]
Y_OFFSET:        895 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       1093
Y_GRB_POS:       1055
BINNING_INDEX:   1
IM_URL:          sw00349592000msuni0869.fits
SUN_POSTN:        27.57d {+01h 50m 17s}  +11.35d {+11d 20' 47"}
SUN_DIST:        115.45 [deg]   Sun_angle= -11.3 [hr] (East of Sun)
MOON_POSTN:      323.65d {+21h 34m 36s}  -12.94d {-12d 56' 18"}
MOON_DIST:        85.80 [deg]
MOON_ILLUM:      31 [%]
GAL_COORDS:      303.98,-12.76 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      242.23,-59.28 [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:     Sun 19 Apr 09 14:01:25 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     349592,   Seg_Num: 0
POINT_RA:        196.988d {+13h 07m 57s} (J2000)
POINT_DEC:       -75.593d {-75d 35' 34"} (J2000)
POINT_ROLL:      191.469d
IMG_START_DATE:  14940 TJD;   109 DOY;   09/04/19
IMG_START_TIME:  50275.38 SOD {13:57:55.38} UT,   864.1 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        2.653
N_STARS:         190
X_OFFSET:        374 [pixels]
Y_OFFSET:        336 [pixels]
X_MAX:           1813 [pixels]
Y_MAX:           1775 [pixels]
DET_THRESH:      13
PHOTO_THRESH:    7
SL_URL:          sw00349592000msufc0864.fits
SUN_POSTN:        27.57d {+01h 50m 17s}  +11.35d {+11d 20' 45"}
SUN_DIST:        115.45 [deg]   Sun_angle= -11.3 [hr] (East of Sun)
MOON_POSTN:      323.63d {+21h 34m 32s}  -12.95d {-12d 56' 42"}
MOON_DIST:        85.79 [deg]
MOON_ILLUM:      31 [%]
GAL_COORDS:      303.98,-12.76 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      242.23,-59.28 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:        GCN/SIMBAD_NED NOTICE
NOTICE_DATE:  Sun Apr 19 14:05:18 UTC 2009
NOTICE_TYPE:  Swift-XRT Position search
TRIGGER_NUM:  349592
RA:           196.9283 (J2000)
DEC:          -75.6059 (J2000)
 
SIMBAD search for XRT_RA,Dec=196.9283,-75.6059,radius=1.0arcmin
 
Num   RA         Dec                    Name                        Type  Num_Pub  Distance

 
 
NED search for XRT_RA,Dec=196.9283,-75.6059,radius=1.0arcmin
 
Num    RA           Dec       Name                           Type      Distance

GCN Circular #9161
G. Stratta (ASDC), S. D. Barthelmy (GSFC), D. N. Burrows (PSU), J. R. Cummings (NASA/UMBC), N. Gehrels (NASA/GSFC), C. Guidorzi (U Ferrara), S. T. Holland (CRESST/USRA/GSFC), E. A. Hoversten (PSU), N. P. M. Kuin (MSSL), V. Mangano (INAF-IASFPA), J. Mao (INAF-OAB), R. Margutti (Univ Bicocca&OAB), F. E. Marshall (NASA/GSFC), D. M. Palmer (LANL), A. M. Parsons (GSFC), M. Perri (ASDC), P. Romano (INAF-IASFPA) and B. Sbarufatti (INAF-IASFPA) report on behalf of the Swift Team:
At 13:43:31 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 090419 (trigger=349592). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 196.976, -75.609 which is
```
   RA(J2000) = 13h 07m 54s
   Dec(J2000) = -75d 36' 30"
```
with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve showed a slow single peak taking 30 seconds to rise to a maximum with a duration of at least 90 seconds, and an additional peak at T+320. The peak count rate was ~800 counts/sec (15-350 keV), at ~30 sec after the trigger.
The XRT began observing the field at 13:45:31.0 UT, 119.7 seconds after the BAT trigger. Using promptly downlinked data we find a bright, fading, uncatalogued X-ray source located at RA, Dec 196.92907, -75.60534 which is equivalent to:
```
   RA(J2000)  = 13h 07m 42.98s
   Dec(J2000) = -75d 36' 19.2"
```
with an uncertainty of 3.7 arcseconds (radius, 90% containment). This location is 44 arcseconds from the BAT onboard position, within the BAT error circle. This position may be improved as more data are received; the latest position is available at http://www.swift.ac.uk/sper.
A power-law fit to a spectrum formed from promptly downlinked event data gives a column density in excess of the Galactic value (1.2e+21 cm^-2, Kalberla et al. 2005), with an excess column of 1.1 (+0.85/-0.64) x 10^22 cm^-2 (90% confidence).
The initial flux in the 2.5 s image was 5.55e-10 erg cm^-2 s^-1 (0.2-10 keV).
UVOT took a finding chart exposure of 150 seconds with the White filter starting 126 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 coverage of the XRT error circle by the 8'x8' region for the list of sources generated on-board is uncertain because the large number of sources filled the available telemetry. No correction has been made for the expected extinction corresponding to E(B-V) of 0.30.
Burst Advocate for this burst is G. Stratta (giulia.stratta AT asdc.asi.it). Please contact the BA by email if you require additional information regarding Swift followup of this burst. In extremely urgent cases, after trying the Burst Advocate, you can contact the Swift PI by phone (see Swift TOO web site for information: http://www.swift.psu.edu/too.html.)

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sun 19 Apr 09 14:05:15 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     349592,   Seg_Num: 0
GRB_RA:          196.9283d {+13h 07m 42.79s} (J2000),
                 197.1066d {+13h 08m 25.57s} (current),
                 195.9835d {+13h 03m 56.04s} (1950)
GRB_DEC:         -75.6059d {-75d 36' 21.2"} (J2000),
                 -75.6554d {-75d 39' 19.4"} (current),
                 -75.3389d {-75d 20' 20.0"} (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:  14940 TJD;   109 DOY;   09/04/19
IMG_START_TIME:  49702.00 SOD {13:48:22.00} UT,   290.7 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:        27.57d {+01h 50m 18s}  +11.35d {+11d 20' 48"}
SUN_DIST:        115.43 [deg]   Sun_angle= -11.3 [hr] (East of Sun)
MOON_POSTN:      323.66d {+21h 34m 39s}  -12.93d {-12d 55' 55"}
MOON_DIST:        85.81 [deg]
MOON_ILLUM:      31 [%]
GAL_COORDS:      303.97,-12.77 [deg] galactic lon,lat of the burst
ECL_COORDS:      242.23,-59.30 [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

GCN Circular #9164
J.P. Osborne, A.P. Beardmore, P.A. Evans and M.R. Goad (U. Leicester) report on behalf of the Swift-XRT team.
Using 1541 s of XRT Photon Counting mode data and 1 UVOT images for GRB 090419, 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 = 196.92894, -75.60586 which is equivalent to:
```
RA (J2000): 13h 07m 42.95s
Dec (J2000): -75d 36' 21.1"
```
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, arXiv:0812.3662).
This circular was automatically generated, and is an official product of the Swift-XRT team.
GCN Circular #9167
H. A. Krimm (GSFC/USRA), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), J. R. Cummings (GSFC/UMBC), E. E. Fenimore (LANL), N. Gehrels (GSFC), C. B. Markwardt (GSFC/UMD), D. M. Palmer (LANL), A. M. Parsons (GSFC), T. Sakamoto (GSFC/UMBC), G. Sato (ISAS), M. Stamatikos (GSFC/ORAU), G. Stratta (ASDC), J. Tueller (GSFC), T. N. Ukwatta (GWU) (i.e. the Swift-BAT team):
Using the data set from T-239 to T+704 sec from recent telemetry downlinks, we report further analysis of BAT GRB 090419 (trigger #349592) (Stratta, et al., GCN Circ. 9161). The BAT ground-calculated position is RA, Dec = 197.006, -75.615 deg, which is
```
   RA(J2000)  =  13h 08m 01.5s 
   Dec(J2000) = -75d 36' 55.6" 
```
with an uncertainty of 2.1 arcmin, (radius, sys+stat, 90% containment). The partial coding was 96%.
The mask-weighted light curve shows a long burst with multiple peaks. The first peak starts at ~T-30 sec. There are comparably bright peaks at T+50, 100, and 320 sec. There is continued emmission out to at least T+1000 sec and possibly T+1800 sec. T90 (15-350 keV) is 450 +- 50 sec (estimated error including systematics).
The time-averaged spectrum from T+8.1 to T+522.8 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.38 +- 0.16. The fluence in the 15-150 keV band is 2.5 +- 0.2 x 10^-6 erg/cm2. The 1-sec peak photon flux measured from T+37.18 sec in the 15-150 keV band is 0.4 +- 0.1 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/349592/BA/
GCN Circular #9169
P. Afonso (MPE Garching), S. Klose (Tautenburg) T. Kruehler and J.Greiner (both MPE Garching) report on behalf of the GROND team:
We observed the field of GRB 090419 (Swift trigger 349592, G. Stratta et al.,GCN #9161) simultaneously in g'r'i'z'JHK with GROND mounted at the 2.2m ESO/MPI telescope at La Silla Observatory (Chile). Observations started on 19 Apr. 2009 at 23:12 UT, 9.5 h after the burst.
Inside the enhanced XRT error circle (J.P. Osborne et al., GCN #9164) we detect a single faint source in the z' and J band at:
```
RA  (J2000.0) =  13:07:43.13
DEC (J2000.0) = -75:36:22.4
```
with an uncertainty of 0.5" in each coordinate.
Preliminary photometry yields the following AB magnitudes and upper limits in stacked images:
```
Filter  T_mid[h]  Exp[s]  AB Mag  MagErr
----------------------------------------
g       11.5792   12x369  >24.6
r       11.5792   12x369  >25.1
i       11.5792   12x369   24.9    0.5
z       11.5792   12x369   24.2    0.1
J       11.5859   360x10   23.0    0.2
H       11.5859   360x10  >22.1
K       11.5859   360x10  >21.2
```
The quoted error is statistical only. There is an additional systematic error in the absolute calibration using the GROND zeropoints and 2MASS field stars which is expected to be in the 0.2 mag range. Quoted magnitudes are not corrected for the significant Galactic foreground extinction corresponding to a reddening of E_(B-V)=0.30.
Given the lack of information about variability and the rather high density of foreground stars we cannot definitely associate this source with GRB 090419 at this point. Because of the high Galactic foreground extinction, the upper limits in g'r' as well as the i'-z' color are not constraining, and the redshift is only constrained to below about 5.
GCN Circular #9172
G. Stratta and M. Perri (ASDC) report on behalf of the Swift-XRT Team:
We have analysed the first 4 orbits of Swift-XRT data obtained from GRB 090419 (trigger 349592; Stratta, et al., GCN Circ. 9161), from T+128 s to T+271 s in Windowed Timing (WT) mode and from T+303 s to T+4.9 h in Photon Counting (PC) mode.
The best position of the X-ray afterglow is the UVOT enhanced XRT position given in Osborne et al. (GCN Circ. 9164).
The 0.3-10 keV X-ray light curve shows an initial flaring activity superimposed to a constant continuum at a level of ~5 counts/s up to ~520 s after the trigger that is consistent with being the X-ray tail of the BAT data (GCN Circ. 9167, Krimm et al.) during the prompt emission.
Starting from 520 s up to 1200 s the count rate decays as a power law with alpha1=3.5+/-0.5 and from T+1200 to T+12 ks it features a flattening with index alpha2=1.1+/-0.2. If decaying at this rate, the afterglow will reach a count-rate of 1.3(0.6)E-3 counts/s at T+24(48)h.
The average WT spectrum (corresponding to the initial flat decay phase) can be fitted by an absorbed power-law model (reduced chi square 1.0 with 18 degrees of freedom), with photon index 1.3+/-0.3, and equivalent hydrogen column density NH=(1.1+/-0.6)E22 cm-2 in excess with respect to the Galactic absorption value of 1.2E21 cm-2 (Kalberla et al. 2005). The average observed(unabsorbed) flux in the 0.3-10 keV band is 4.2(5.4)E-10 ergs cm-2 s-1.
The results of the XRT-team automatic analysis are available at http://www.swift.ac.uk/xrt_products/00349510.
This circular is an official product of the Swift-XRT team.

GCN Circular #9177
M. H. Siegel (PSU), E. A. Hoversten (PSU) and G. Stratta (ASDC) report on behalf of the Swift/UVOT team.
The Swift/UVOT began observing the field of GRB 090419 126s after the BAT trigger (Stratta et al., GCN Circ. 9161). Data summed over the first orbit reveals a very faint (3.3 sigma) source in the white filter at the refined position of the X-ray afterglow (Osborne et al., GCN Circ. 9164). This source is not detected in the second orbit data.
The detection and 3-sigma upper limits for the finding chart (fc) and summed exposures are reported below:

FILTER     T_start(s)  T_stop     Exposure     Mag/3UL
=============================================================
white fc    126          276        147        > 20.69
white       126         1706        410          21.07+-0.31
white      5320         6956        393        > 21.25

v           614         1756        136        > 18.93
v          5732         7367        393        > 19.60

b           540         1682        116        > 19.87
b          5116        13394        572        > 20.69

u           284         1829        362        > 20.25
u          6346        13206       1081        > 20.89

uvw1        664         1805        136        > 19.31
uvw1       6142        12292       1118        > 20.63

uvm2        639         1608         58        > 18.41
uvm2       5936        17728        465        > 19.99

uvw2        590         1731        136        > 19.37
uvw2       5527         7162        393        > 20.13
=============================================================

The above magnitudes are not corrected for the Galactic extinction corresponding to a reddening of E_{B-V} = 0.296 (Schlegel et al., 1998, ApJS, 500, 525). The photometry is on the UVOT photometric system described in Poole et al. (2008, MNRAS, 383, 627).

GCN Report 212.1
GCN_Report 212.1 has been posted: http://gcn.gsfc.nasa.gov/reports/report_212_1.pdf by G. Stratta at ASDC titled: "Final Results on Swift GRB 090419"

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Jochen Greiner, last update: 07-May-2009 [Disclaimer]