Gamma-ray Burst 090205

(All information courtesy of the instrument teams.)

Previous IAU Circulars

none

Results of Observations

GCN/BACODINE POSITION NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 05 Feb 09 23:03:59 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     342121,   Seg_Num: 0
GRB_RA:          220.925d {+14h 43m 42s} (J2000),
                 221.060d {+14h 44m 14s} (current),
                 220.190d {+14h 40m 46s} (1950)
GRB_DEC:         -27.864d {-27d 51' 48"} (J2000),
                 -27.902d {-27d 54' 06"} (current),
                 -27.652d {-27d 39' 07"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       15930 [cnts]    Image_Peak=397 [image_cnts]
TRIGGER_DUR:     4.096 [sec] 
TRIGGER_INDEX:   298     E_range: 25-100 keV
BKG_INTEN:       136279 [cnts]
BKG_TIME:        82939.52 SOD {23:02:19.52} UT
BKG_DUR:         40 [sec]
GRB_DATE:        14867 TJD;    36 DOY;   09/02/05
GRB_TIME:        82994.82 SOD {23:03:14.82} UT
GRB_PHI:         -28.19 [deg]
GRB_THETA:        10.62 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     15.13 [sigma]
IMAGE_SIGNIF:    8.16 [sigma]
MERIT_PARAMS:     +1  +0  +0  +3  +2  +4  +0  +0  +0  +0 
SUN_POSTN:       319.74d {+21h 18m 56s}  -15.65d {-15d 39' 10"}
SUN_DIST:         90.12 [deg]   Sun_angle= 6.6 [hr] (West of Sun)
MOON_POSTN:       86.82d {+05h 47m 17s}  +26.84d {+26d 50' 17"}
MOON_DIST:       139.59 [deg]
MOON_ILLUM:      82 [%]
GAL_COORDS:      331.26, 28.76 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      227.04,-11.45 [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 = 72.86,2.66 [deg].

red DSS finding chart ps-file

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 05 Feb 09 23:04:50 UT
NOTICE_TYPE:     Swift-XRT Nack-Position
TRIGGER_NUM:     342121,   Seg_Num: 0
POINT_RA:        220.933d {+14h 43m 44s} (J2000)
POINT_DEC:       -27.861d {-27d 51' 39"} (J2000)
IMG_START_DATE:  14867 TJD;    36 DOY;   09/02/05
IMG_START_TIME:  83082.43 SOD {23:04:42.43} UT,   87.6 [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:     Thu 05 Feb 09 23:06:48 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     342121,   Seg_Num: 0
GRB_RA:          220.925d {+14h 43m 42s} (J2000),
                 221.060d {+14h 44m 14s} (current),
                 220.190d {+14h 40m 46s} (1950)
GRB_DEC:         -27.864d {-27d 51' 48"} (J2000),
                 -27.902d {-27d 54' 06"} (current),
                 -27.652d {-27d 39' 07"} (1950)
GRB_DATE:        14867 TJD;    36 DOY;   09/02/05
GRB_TIME:        82994.82 SOD {23:03:14.82} UT
TRIGGER_INDEX:   298
GRB_PHI:         -28.19 [deg]
GRB_THETA:        10.62 [deg]
DELTA_TIME:      71.00 [sec]
TRIGGER_DUR:     4.096 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     15.13 [sigma]
IMAGE_SIGNIF:    8.16 [sigma]
LC_URL:          sw00342121000msb.lc
SUN_POSTN:       319.74d {+21h 18m 57s}  -15.65d {-15d 39' 07"}
SUN_DIST:         90.12 [deg]   Sun_angle= 6.6 [hr] (West of Sun)
MOON_POSTN:       86.85d {+05h 47m 24s}  +26.84d {+26d 50' 12"}
MOON_DIST:       139.56 [deg]
MOON_ILLUM:      82 [%]
GAL_COORDS:      331.26, 28.76 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      227.04,-11.45 [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 = 72.86,2.66 [deg].

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 05 Feb 09 23:08:04 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     342121,   Seg_Num: 0
POINT_RA:        220.933d {+14h 43m 44s} (J2000)
POINT_DEC:       -27.861d {-27d 51' 38"} (J2000)
POINT_ROLL:      107.906d
IMG_START_DATE:  14867 TJD;    36 DOY;   09/02/05
IMG_START_TIME:  83086.67 SOD {23:04:46.67} UT,   91.8 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        3.355
N_STARS:         104
X_OFFSET:        471 [pixels]
Y_OFFSET:        607 [pixels]
X_MAX:           1430 [pixels]
Y_MAX:           1566 [pixels]
DET_THRESH:      15
PHOTO_THRESH:    8
SL_URL:          sw00342121000msufc0091.fits
SUN_POSTN:       319.74d {+21h 18m 57s}  -15.65d {-15d 39' 06"}
SUN_DIST:         90.12 [deg]   Sun_angle= 6.6 [hr] (West of Sun)
MOON_POSTN:       86.87d {+05h 47m 28s}  +26.84d {+26d 50' 10"}
MOON_DIST:       139.55 [deg]
MOON_ILLUM:      82 [%]
GAL_COORDS:      331.27, 28.76 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      227.04,-11.44 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 05 Feb 09 23:08:31 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     342121,   Seg_Num: 0
POINT_RA:        220.933d {+14h 43m 44s} (J2000)
POINT_DEC:       -27.861d {-27d 51' 38"} (J2000)
ROLL:            107.906d
IMG_START_DATE:  14867 TJD;    36 DOY;   09/02/05
IMG_START_TIME:  83086.67 SOD {23:04:46.67} UT,   91.8 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     255567891
X_OFFSET:        790 [pixels]
Y_OFFSET:        926 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       950
Y_GRB_POS:       1086
BINNING_INDEX:   1
IM_URL:          sw00342121000msuni0096.fits
SUN_POSTN:       319.74d {+21h 18m 57s}  -15.65d {-15d 39' 06"}
SUN_DIST:         90.12 [deg]   Sun_angle= 6.6 [hr] (West of Sun)
MOON_POSTN:       86.87d {+05h 47m 29s}  +26.84d {+26d 50' 09"}
MOON_DIST:       139.55 [deg]
MOON_ILLUM:      82 [%]
GAL_COORDS:      331.27, 28.76 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      227.04,-11.44 [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:     Thu 05 Feb 09 23:08:39 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     342121,   Seg_Num: 0
POINT_RA:        220.933d {+14h 43m 44s} (J2000)
POINT_DEC:       -27.861d {-27d 51' 38"} (J2000)
POINT_ROLL:      107.906d
IMG_START_DATE:  14867 TJD;    36 DOY;   09/02/05
IMG_START_TIME:  83086.67 SOD {23:04:46.67} UT,   91.8 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        3.355
N_STARS:         104
X_OFFSET:        471 [pixels]
Y_OFFSET:        607 [pixels]
X_MAX:           1430 [pixels]
Y_MAX:           1566 [pixels]
DET_THRESH:      15
PHOTO_THRESH:    8
SL_URL:          sw00342121000msufc0091.fits
SUN_POSTN:       319.74d {+21h 18m 57s}  -15.65d {-15d 39' 06"}
SUN_DIST:         90.12 [deg]   Sun_angle= 6.6 [hr] (West of Sun)
MOON_POSTN:       86.87d {+05h 47m 29s}  +26.84d {+26d 50' 09"}
MOON_DIST:       139.55 [deg]
MOON_ILLUM:      82 [%]
GAL_COORDS:      331.27, 28.76 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      227.04,-11.44 [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:     Thu 05 Feb 09 23:08:58 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     342121,   Seg_Num: 0
POINT_RA:        220.933d {+14h 43m 44s} (J2000)
POINT_DEC:       -27.861d {-27d 51' 38"} (J2000)
ROLL:            107.906d
IMG_START_DATE:  14867 TJD;    36 DOY;   09/02/05
IMG_START_TIME:  83086.67 SOD {23:04:46.67} UT,   91.8 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     255567891
X_OFFSET:        790 [pixels]
Y_OFFSET:        926 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       950
Y_GRB_POS:       1086
BINNING_INDEX:   1
IM_URL:          sw00342121000msuni0096.fits
SUN_POSTN:       319.74d {+21h 18m 57s}  -15.65d {-15d 39' 06"}
SUN_DIST:         90.12 [deg]   Sun_angle= 6.6 [hr] (West of Sun)
MOON_POSTN:       86.88d {+05h 47m 30s}  +26.84d {+26d 50' 09"}
MOON_DIST:       139.55 [deg]
MOON_ILLUM:      82 [%]
GAL_COORDS:      331.27, 28.76 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      227.04,-11.44 [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_sources_image.fits.gz file does not exist; skipping the attachment.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 05 Feb 09 23:12:17 UT
NOTICE_TYPE:     Swift-XRT Position
TRIGGER_NUM:     342121,   Seg_Num: 0
GRB_RA:          220.9114d {+14h 43m 38.73s} (J2000),
                 221.0456d {+14h 44m 10.93s} (current),
                 220.1757d {+14h 40m 42.16s} (1950)
GRB_DEC:         -27.8529d {-27d 51' 10.4"} (J2000),
                 -27.8911d {-27d 53' 28.1"} (current),
                 -27.6413d {-27d 38' 28.8"} (1950)
GRB_ERROR:       3.8 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  14867 TJD;    36 DOY;   09/02/05
IMG_START_TIME:  83095.00 SOD {23:04:55.00} UT,   100.2 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       319.74d {+21h 18m 58s}  -15.65d {-15d 39' 03"}
SUN_DIST:         90.14 [deg]   Sun_angle= 6.6 [hr] (West of Sun)
MOON_POSTN:       86.91d {+05h 47m 39s}  +26.83d {+26d 50' 03"}
MOON_DIST:       139.49 [deg]
MOON_ILLUM:      82 [%]
GAL_COORDS:      331.25, 28.78 [deg] galactic lon,lat of the burst
ECL_COORDS:      227.02,-11.44 [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.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 05 Feb 09 23:14:54 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     342121,   Seg_Num: 0
POINT_RA:        220.932d {+14h 43m 44s} (J2000)
POINT_DEC:       -27.860d {-27d 51' 33"} (J2000)
POINT_ROLL:      107.909d
IMG_START_DATE:  14867 TJD;    36 DOY;   09/02/05
IMG_START_TIME:  83244.99 SOD {23:07:24.99} UT,   250.2 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        0.993
N_STARS:         190
X_OFFSET:        231 [pixels]
Y_OFFSET:        367 [pixels]
X_MAX:           1670 [pixels]
Y_MAX:           1806 [pixels]
DET_THRESH:      9
PHOTO_THRESH:    4
SL_URL:          sw00342121000msufc0250.fits
SUN_POSTN:       319.74d {+21h 18m 58s}  -15.65d {-15d 39' 01"}
SUN_DIST:         90.12 [deg]   Sun_angle= 6.6 [hr] (West of Sun)
MOON_POSTN:       86.94d {+05h 47m 46s}  +26.83d {+26d 49' 58"}
MOON_DIST:       139.49 [deg]
MOON_ILLUM:      82 [%]
GAL_COORDS:      331.27, 28.76 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      227.04,-11.44 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 05 Feb 09 23:15:32 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     342121,   Seg_Num: 0
POINT_RA:        220.932d {+14h 43m 44s} (J2000)
POINT_DEC:       -27.860d {-27d 51' 33"} (J2000)
POINT_ROLL:      107.909d
IMG_START_DATE:  14867 TJD;    36 DOY;   09/02/05
IMG_START_TIME:  83244.99 SOD {23:07:24.99} UT,   250.2 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        0.993
N_STARS:         190
X_OFFSET:        231 [pixels]
Y_OFFSET:        367 [pixels]
X_MAX:           1670 [pixels]
Y_MAX:           1806 [pixels]
DET_THRESH:      9
PHOTO_THRESH:    4
SL_URL:          sw00342121000msufc0250.fits
SUN_POSTN:       319.74d {+21h 18m 58s}  -15.65d {-15d 39' 01"}
SUN_DIST:         90.12 [deg]   Sun_angle= 6.6 [hr] (West of Sun)
MOON_POSTN:       86.95d {+05h 47m 48s}  +26.83d {+26d 49' 57"}
MOON_DIST:       139.48 [deg]
MOON_ILLUM:      82 [%]
GAL_COORDS:      331.27, 28.76 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      227.04,-11.44 [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:     Thu 05 Feb 09 23:16:10 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     342121,   Seg_Num: 0
POINT_RA:        220.932d {+14h 43m 44s} (J2000)
POINT_DEC:       -27.860d {-27d 51' 33"} (J2000)
ROLL:            107.909d
IMG_START_DATE:  14867 TJD;    36 DOY;   09/02/05
IMG_START_TIME:  83244.99 SOD {23:07:24.99} UT,   250.2 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     255568049
X_OFFSET:        790 [pixels]
Y_OFFSET:        926 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       950
Y_GRB_POS:       1086
BINNING_INDEX:   1
IM_URL:          sw00342121000msuni0255.fits
SUN_POSTN:       319.74d {+21h 18m 58s}  -15.65d {-15d 39' 00"}
SUN_DIST:         90.12 [deg]   Sun_angle= 6.6 [hr] (West of Sun)
MOON_POSTN:       86.96d {+05h 47m 50s}  +26.83d {+26d 49' 56"}
MOON_DIST:       139.47 [deg]
MOON_ILLUM:      82 [%]
GAL_COORDS:      331.27, 28.76 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      227.04,-11.44 [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:     Thu 05 Feb 09 23:16:35 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     342121,   Seg_Num: 0
POINT_RA:        220.932d {+14h 43m 44s} (J2000)
POINT_DEC:       -27.860d {-27d 51' 33"} (J2000)
ROLL:            107.909d
IMG_START_DATE:  14867 TJD;    36 DOY;   09/02/05
IMG_START_TIME:  83244.99 SOD {23:07:24.99} UT,   250.2 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     255568049
X_OFFSET:        790 [pixels]
Y_OFFSET:        926 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       950
Y_GRB_POS:       1086
BINNING_INDEX:   1
IM_URL:          sw00342121000msuni0255.fits
SUN_POSTN:       319.74d {+21h 18m 59s}  -15.65d {-15d 39' 00"}
SUN_DIST:         90.12 [deg]   Sun_angle= 6.6 [hr] (West of Sun)
MOON_POSTN:       86.96d {+05h 47m 51s}  +26.83d {+26d 49' 55"}
MOON_DIST:       139.47 [deg]
MOON_ILLUM:      82 [%]
GAL_COORDS:      331.27, 28.76 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      227.04,-11.44 [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_sources_image.fits.gz file does not exist; skipping the attachment.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 05 Feb 09 23:16:20 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     342121,   Seg_Num: 0
GRB_RA:          220.9114d {+14h 43m 38.73s} (J2000),
                 221.0456d {+14h 44m 10.93s} (current),
                 220.1757d {+14h 40m 42.16s} (1950)
GRB_DEC:         -27.8531d {-27d 51' 11.1"} (J2000),
                 -27.8913d {-27d 53' 28.8"} (current),
                 -27.6415d {-27d 38' 29.5"} (1950)
GRB_ERROR:       2.3 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  14867 TJD;    36 DOY;   09/02/05
IMG_START_TIME:  83095.00 SOD {23:04:55.00} UT,   100.2 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       319.74d {+21h 18m 58s}  -15.65d {-15d 39' 00"}
SUN_DIST:         90.14 [deg]   Sun_angle= 6.6 [hr] (West of Sun)
MOON_POSTN:       86.96d {+05h 47m 50s}  +26.83d {+26d 49' 55"}
MOON_DIST:       139.45 [deg]
MOON_ILLUM:      82 [%]
GAL_COORDS:      331.25, 28.78 [deg] galactic lon,lat of the burst
ECL_COORDS:      227.02,-11.44 [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 NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 05 Feb 09 23:21:09 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     342121,   Seg_Num: 0
POINT_RA:        220.932d {+14h 43m 44s} (J2000)
POINT_DEC:       -27.859d {-27d 51' 32"} (J2000)
POINT_ROLL:      107.908d
IMG_START_DATE:  14867 TJD;    36 DOY;   09/02/05
IMG_START_TIME:  83872.59 SOD {23:17:52.59} UT,   877.8 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        3.686
N_STARS:         190
X_OFFSET:        231 [pixels]
Y_OFFSET:        367 [pixels]
X_MAX:           1670 [pixels]
Y_MAX:           1806 [pixels]
DET_THRESH:      16
PHOTO_THRESH:    9
SL_URL:          sw00342121000msufc0877.fits
SUN_POSTN:       319.75d {+21h 18m 59s}  -15.65d {-15d 38' 56"}
SUN_DIST:         90.13 [deg]   Sun_angle= 6.6 [hr] (West of Sun)
MOON_POSTN:       87.01d {+05h 48m 04s}  +26.83d {+26d 49' 47"}
MOON_DIST:       139.42 [deg]
MOON_ILLUM:      82 [%]
GAL_COORDS:      331.27, 28.76 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      227.04,-11.44 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 05 Feb 09 23:21:47 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     342121,   Seg_Num: 0
POINT_RA:        220.932d {+14h 43m 44s} (J2000)
POINT_DEC:       -27.859d {-27d 51' 32"} (J2000)
POINT_ROLL:      107.908d
IMG_START_DATE:  14867 TJD;    36 DOY;   09/02/05
IMG_START_TIME:  83872.59 SOD {23:17:52.59} UT,   877.8 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        3.686
N_STARS:         190
X_OFFSET:        231 [pixels]
Y_OFFSET:        367 [pixels]
X_MAX:           1670 [pixels]
Y_MAX:           1806 [pixels]
DET_THRESH:      16
PHOTO_THRESH:    9
SL_URL:          sw00342121000msufc0877.fits
SUN_POSTN:       319.75d {+21h 18m 59s}  -15.65d {-15d 38' 56"}
SUN_DIST:         90.13 [deg]   Sun_angle= 6.6 [hr] (West of Sun)
MOON_POSTN:       87.02d {+05h 48m 05s}  +26.83d {+26d 49' 46"}
MOON_DIST:       139.42 [deg]
MOON_ILLUM:      82 [%]
GAL_COORDS:      331.27, 28.76 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      227.04,-11.44 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Processed Source List.  
COMMENTS:        All 4 attachments are included.

GCN Circular #8884
M. Perri (ASDC), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), D. N. Burrows (PSU), N. Gehrels (NASA/GSFC), O. Godet (U Leicester), C. Gronwall (PSU), S. T. Holland (CRESST/USRA/GSFC), E. A. Hoversten (PSU), W.B Landsman (GSFC), C. B. Markwardt (CRESST/GSFC/UMD), F. E. Marshall (NASA/GSFC), D. M. Palmer (LANL), M. Stamatikos (NASA/ORAU), G. Stratta (ASDC), M. C. Stroh (PSU) and L. Vetere (PSU) report on behalf of the Swift Team:
At 23:03:14 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 090205 (trigger=342121). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 220.925, -27.864 which is
```
   RA(J2000) = 14h 43m 42s
   Dec(J2000) = -27d 51' 48"
```
with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve shows a single peak with a duration of about 10 sec. The peak count rate was ~900 counts/sec (15-350 keV), at ~1 sec after the trigger.
The XRT began observing the field at 23:04:42.4 UT, 87.6 seconds after the BAT trigger. Using promptly downlinked data we find an uncatalogued X-ray source located at RA, Dec 220.91150, -27.85298 which is equivalent to:
```
   RA(J2000)  = 14h 43m 38.76s
   Dec(J2000) = -27d 51' 10.7"
```
with an uncertainty of 3.8 arcseconds (radius, 90% containment). This location is 58 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 7.72e+20 cm^-2 (Kalberla et al. 2005).
UVOT took a finding chart exposure of 150 seconds with the White filter starting 92 seconds after the BAT trigger. No credible afterglow candidate has been found in the initial data products. The 8'x8' region for the list of sources generated on-board covers 100% of the BAT error circle and 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 0.12.
Burst Advocate for this burst is M. Perri (perri 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:     Thu 05 Feb 09 23:22:59 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     342121,   Seg_Num: 0
POINT_RA:        220.932d {+14h 43m 44s} (J2000)
POINT_DEC:       -27.859d {-27d 51' 32"} (J2000)
ROLL:            107.908d
IMG_START_DATE:  14867 TJD;    36 DOY;   09/02/05
IMG_START_TIME:  83872.59 SOD {23:17:52.59} UT,   877.8 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     255568677
X_OFFSET:        790 [pixels]
Y_OFFSET:        926 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       950
Y_GRB_POS:       1086
BINNING_INDEX:   1
IM_URL:          sw00342121000msuni0882.fits
SUN_POSTN:       319.75d {+21h 19m 00s}  -15.65d {-15d 38' 55"}
SUN_DIST:         90.13 [deg]   Sun_angle= 6.6 [hr] (West of Sun)
MOON_POSTN:       87.04d {+05h 48m 09s}  +26.83d {+26d 49' 43"}
MOON_DIST:       139.40 [deg]
MOON_ILLUM:      82 [%]
GAL_COORDS:      331.27, 28.76 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      227.04,-11.44 [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_sources_image.fits.gz file does not exist; skipping the attachment.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Thu 05 Feb 09 23:22:42 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     342121,   Seg_Num: 0
POINT_RA:        220.932d {+14h 43m 44s} (J2000)
POINT_DEC:       -27.859d {-27d 51' 32"} (J2000)
ROLL:            107.908d
IMG_START_DATE:  14867 TJD;    36 DOY;   09/02/05
IMG_START_TIME:  83872.59 SOD {23:17:52.59} UT,   877.8 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     255568677
X_OFFSET:        790 [pixels]
Y_OFFSET:        926 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       950
Y_GRB_POS:       1086
BINNING_INDEX:   1
IM_URL:          sw00342121000msuni0882.fits
SUN_POSTN:       319.75d {+21h 19m 00s}  -15.65d {-15d 38' 55"}
SUN_DIST:         90.13 [deg]   Sun_angle= 6.6 [hr] (West of Sun)
MOON_POSTN:       87.03d {+05h 48m 08s}  +26.83d {+26d 49' 44"}
MOON_DIST:       139.41 [deg]
MOON_ILLUM:      82 [%]
GAL_COORDS:      331.27, 28.76 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      227.04,-11.44 [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 Circular #8885
P.A. Evans, M.R. Goad, J.P. Osborne and A.P. Beardmore (U. Leicester) report on behalf of the Swift-XRT team.
Using 944 s of XRT Photon Counting mode data and 1 UVOT images for GRB 090205, 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 = 220.91119, -27.85267 which is equivalent to:
```
RA (J2000): 14h 43m 38.69s
Dec (J2000): -27d 51' 09.6"
```
with an uncertainty of 1.8 arcsec (radius, 90% confidence).
This position may be improved as more data are received. The latest position can be viewed at http://www.swift.ac.uk/xrt_positions. Position enhancement is described by Goad et al. (2007, A&A, 476, 1401 http://www.swift.ac.uk/xrt_positions/Goad.pdf), the current algorithm is an extension of this method.
This circular was automatically generated, and is an official product of the Swift-XRT team.
GCN Circular #8886
GRB 090205: Swift-BAT refined analysis
J. R. Cummings (GSFC/UMBC), S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), E. E. Fenimore (LANL), N. Gehrels (GSFC), H. A. Krimm (GSFC/USRA), C. B. Markwardt (GSFC/UMD), D. M. Palmer (LANL), M. Perri (ASDC), T. Sakamoto (GSFC/UMBC), G. Sato (ISAS), M. Stamatikos (GSFC/ORAU), J. Tueller (GSFC), T. N. Ukwatta (GWU) (i.e. the Swift-BAT team):
Using the data set from T-239 to T+455 sec from recent telemetry downlinks, we report further analysis of BAT GRB 090205 (trigger #342121) (Perri, et al., GCN Circ. 8884). The BAT ground-calculated position is RA, Dec = 220.917, -27.848 deg which is
```
   RA(J2000)  =  14h 43m 40.0s 
   Dec(J2000) = -27d 50' 51.4" 
```
with an uncertainty of 2.0 arcmin, (radius, sys+stat, 90% containment). The partial coding was 100%.
The mask-weighted light curve shows a single peak starting at ~T-5 sec, peaking at ~T+3 sec, and returning to background at ~T+100 sec. T90 (15-350 keV) is 8.8 +- 1.8 sec (estimated error including systematics).
The time-averaged spectrum from T-2.9 to T+6.6 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 2.15 +- 0.23. The fluence in the 15-150 keV band is 1.9 +- 0.3 x 10^-7 erg/cm2. The 1-sec peak photon flux measured from T+4.09 sec in the 15-150 keV band is 0.5 +- 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/342121/BA/
GCN Circular #8887
P. D'Avanzo, C. C. Thoene, D. Fugazza (INAF-OAB), V. D'Elia, S. Piranomonte (INAF-OAR), R. Salvaterra, S. Covino, S. Campana (INAF-OAB), G. Chincarini (Univ. Bicocca) report, on behalf of the MISTICI collaboration:
We observed the field of GRB 090205 (Perri et al., GCN 8884) with the ESO-VLT in imaging mode starting about 7.1 hours after the burst. Observations were carried out in R and I-band with the FORS1 camera.
Inside the enhanced XRT error circle (Evans et al. GCN 8885) we find a source at the following coordinates (J2000):
```
R.A. = 14:43:38.65
Dec. = -27:51:10.7
```
+/- 0.4"
Preliminary photometry of this candidate afterglow gives R ~ 22.0 .
We acknowledge the VLT staff for their support, in particular G. James and J. Smoker.
GCN Circular #8888
T. Kruehler and J. Greiner (both MPE Garching) report on behalf of the GROND team:
We observed the field of GRB 090205 (Swift trigger 342121, M. Perri et al.,GCN #8884) 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 03 Feb. 2009 at 05:25 UT, 6.33 h after the burst.
The object reported by D'Avanzo et al. (GCN #8887) is very well detected in the i' band and redder, marginally in r' and not in g'. A preliminary i' band magnitude is 20.7 +- 0.2 roughly 7 hours after the burst. Interpreting the large r'-i' color and the g' band non detection as Lyman-alpha absorption in the GRB host, we derive a photometric redshift of 4.7 +- 0.3. This redshift estimate has been obtained using hyperZ (Bolzonella et al. 2000). We caution that this is based on a preliminary calibration.
No statement about variability can be made at this point.
GCN Circular #8889
C. C. Thoene, D. Fugazza, P. D'Avanzo (INAF-OAB), V. D'Elia, S. Piranomonte (INAF-OAR), R. Salvaterra, S. Covino, S. Campana (INAF-OAB), G. Chincarini (Univ. Bicocca) report, on behalf of the MISTICI collaboration:
We observed the optical afterglow of GRB 090205 (D'Avanzo et al. GCN 8887; Kruehler & Greiner GCN 8888) with the ESO VLT about 9.0 hours after the burst with the FORS1 camera in spectroscopic mode. We took a 20 min spectrum covering the range 4000-9000 Angstrom (based on a preliminary wavelength calibration) with a resolution of R=440.
We detect a broad absorption feature around lambda_obs = 6800 Angstrom. Interpreting this feature as Ly-alpha absorption the inferred redshift is z = 4.6 in agreement with the photometric redshift reported by Kruehler & Greiner (GCN 8888).
We acknowledge excellent support from the ESO staff, in particular G. James and J. Smoker.
GCN Circular #8890
N. Gehrels (GSFC) & M. Perri (ASDC) report on behalf of the Swift team
Based on its high redshift, relatively bright optical afterglow and variable X-ray afterglow, the Swift team declares GRB 090205 to be a burst of interest to be followed by Swift as long as detectable. We encourage ground-based follow-ups. Please post your results / plans or send us informal information to help with observation planning.
GCN Circular #8891
M. Perri and G. Stratta (ASDC) report on behalf of the Swift XRT team:
We have analyzed the first 13.5 ks of Swift-XRT data of the BAT GRB 090205 (Perri et al., GCN Circ. 8884). The data, starting at 2009-02-05 23:04:55 UT and ending at 2009-02-06 09:10:33 UT, is all taken in Photon Counting (PC) mode.
The best XRT position is the UVOT-enhanced position reported by Evans et al. (GCN Circ. 8885).
In the time interval T+94s-T+580 s the X-ray light curve can be modeled by a simple power law with a decay index alpha_1=3D 1.4 =B1 0.3 (90% confidence) followed by a re-brightening around T+1 ks. After the re-brightnening, from T+5 ks up to T+30 ks, the light curve decays with a power law index alpha_2=3D 0.9 =B1 0.2.
The X-ray spectrum is well fit by an absorbed power-law model with a photon index of 2.0 (+/-0.2) and a column density consistent with the Galactic one in the direction of the source (7.7e20 cm**-2, Kalberla et al. 2005). The estimated 3-sigma (2-sigma) upper limit on the intrinsic column density at z=3D4.6 (Thoene et al., GCN Circ. 8889) is 4.1e22cm**-2 (2.8e22cm**-2).
Assuming the X-ray emission continues to decline at the same rate, we predict a 0.3-10 keV XRT count rate of 6e-3 count/s at T+24hr, which corresponds to an observed 0.3-10 keV flux of ~2e-13 erg/cm**2/s.
This circular is an official product of the Swift-XRT Team.
GCN Circular #8892
D. Fugazza, C. C. Thoene (INAF-OAB), V. D'Elia (INAF-OAR), P. D'Avanzo=20 (INAF-OAB), S. Piranomonte (INAF-OAR), R. Salvaterra, S. Covino, S.=20 Campana (INAF-OAB), G. Chincarini (Univ. Bicocca) report, on behalf of=20 the MISTICI collaboration:
We performed further analysis of our VLT spectrum of the optical=20 afterglow of GRB 090205 (D'Avanzo et al. GCN 8887; Kruehler & Greiner,=20 GCN 8888; Thoene et al., GCN 8889).
We clearly detect the following absorption features: Ly_alpha (1215.67),=20 SiII (1260.66), SiII (1303.27), CII (1334.53), SiIV (1393.76, 1402.77)=20 doublet, SiII (1526.71) and CIV (1548.20,1550.77) doublet at a redshift=20 of z =3D 4.6497 =B1 0.0025 consistent with previous claims (Kruehler &=20 Greiner, GCN 8888; Thoene et al., GCN 8889).
GCN Circular #8893
W. Landsman (NASA/GSFC) and M. Perri (ASDC) report on behalf of the Swift UVOT team
The Swift/UVOT began settled observations of the field of GRB 090205 92s after the BAT trigger (Perri et al., GCN 8884). We do not detect any source at the enhanced Swift XRT position (Evans et al. GCN 8885) or at the VLT optical candidate position (D'Avanzo et al. GCN 8887). The UVOT non-detections are consistent with the spectroscopic redshift of 4.6 reported by Thoene et al. (GCN 8889). Our 3-sigma upper limits are reported below.
```
Filter   T_start   T_stop   Exp(s)  Mag (3-sigma upper limit)
-------------------------------------------------------------
white       92       242     148       > 21.1
white       92      7633     824       > 21.9
v          580     12829    1234       > 20.7
b          506     34930    2073       > 21.7
u          250       500     246       > 20.5
u          298     18581    1660       > 21.4
uvw1       629     17668    1415       > 21.4
uvm2       604     23148    1882       > 21.4
uvw2       555     11915    1322       > 21.5
```
The quoted upper limits have not been corrected for the expected Galactic extinction along the line of sight of E_(B-V) = 0.12 mag. All photometry is on the UVOT photometric system described in Poole et al. (2008, MNRAS, 383, 627).
GCN Circular #8895
P. D'Avanzo, D. Fugazza (INAF-OAB), V. D'Elia (INAF-OAR), R. Salvaterra, C. C. Thoene (INAF-OAB), S. Piranomonte (INAF-OAR), S. Covino, S. Campana (INAF-OAB), G. Chincarini (Univ. Bicocca) report, on behalf of the MISTICI collaboration:
We continued monitoring GRB 090205 (Perri et al., GCN 8884) with the ESO-VLT in imaging mode. Observations were carried out in R-band with the FORS1 camera about 1.35 days after the burst.
Preliminary analysis of a first set of images (total exposure: 12 min) reveals that the optical afterglow (D'Avanzo et al. GCN 8887; Kruehler & Greiner GCN 8888) is still detected and that it faded by about 3 mags with respect to our previous epoch of VLT observations (D'Avanzo et al. GCN 8887). Assuming a power-law decy, the inferred decay index between this two epochs is alpha ~ 1.8, steeper than what measured in the X-rays at earlier epochs (Perri & Stratta, GCN 8891). Further optical observations are ongoing.
We acknowledge the VLT staff for their support, in particular G. James and L. Schmidtobreick.
GCN Circular #8896
Poonam Chandra (RMC) and Dale A. Frail (NRAO) report on behalf of the Caltech-NRAO-Carnegie GRB Collaboration:
"We used the Very Large Array to observe the field of view toward GRB 090205 (GCN 8884) at a frequency of 8.46 GHz on 2009 Jan 07.50 UT. The GRB radio afterglow is undetected at 3-sigma level. The flux density at the VLT afterglow position (GCB 8887) is 21 =B1 47 uJy.
The National Radio Astronomy Observatory is a facility of the National Science Foundation operated under cooperative agreement by Associated Universities, Inc."
GCN Circular #8976
```
SUBJECT: GRB 090205: Zadko Telescope late-time observations
From: D.M. Coward at UWA
```
T.P. Vaalsta reports on behalf of the UWA Zadko Telescope Team:
D.M. Coward, T.P. Vaalsta, J. Zadko, A. Imerito, D. Blair, P. Luckas, S. Gordon, K. Frost, A. Fletcher (U. of Western Australia) M. Todd, M. Zadnik (Curtin University) M. Boer, A. Klotz (TAROT)
The Zadko Telescope team observed the field of GRB 090205 following the report by N. Gehrels and M. Perri (GCN 8525, 09/02/06 14:46:05 GMT). Observations started at 09/02/06 16:38:29 GMT using an iKon DW436BV CAMERA without filters mounted on the F/4 1.0m Zadko Telescope about 17.6 hours after the initial burst trigger (GCN 8884). The GRB field was imaged for a total of 4460s until dawn. In a 1100s stacked image, a candidate OA with 23.2(3) white magnitude was observed at the enhanced XRT position (GCN 8885). The OA magnitude was estimated differentially using nearby nearby USNO-B1 stars as references.
The same field was imaged 2 weeks later and the candidate OA was not detected.
The UWA Zadko Telescope is currently being commissioned.
This message is quotable in publications
GCN Report 200.1
GCN_Report 200.1 has been posted: http://gcn.gsfc.nasa.gov/reports/report_200_1.pdf by M. Perri at ASDC titled: "Final Swift Observations of GRB 090205"
1006.0800 from 7 Jun 10
P. D'Avanzo et al.: The afterglow and host galaxy of GRB 090205: evidence for a Ly-alpha emitter at z=4.65
Ukwatta, D. N. Burrows, N. Gehrels, P. Meszaros, K. Toma, B. Zhang, S. Covino, S. Campana, V. D'Elia, M. Della Valle, S. Piranomonte
Gamma-ray bursts have been proved to be detectable up to distances much larger than any other astrophysical object, providing the most effective way, complementary to ordinary surveys, to study the high redshift universe. To this end, we present here the results of an observational campaign devoted to the study of the high-z GRB 090205. We carried out optical/NIR spectroscopy and imaging of GRB 090205 with the ESO-VLT starting from hours after the event up to several days later to detect the host galaxy. We compared the results obtained from our optical/NIR observations with the available Swift high-energy data of this burst. Our observational campaign led to the detection of the optical afterglow and host galaxy of GRB 090205 and to the first measure of its redshift, z=4.65. Similar to other, recent high-z GRBs, GRB 090205 has a short duration in the rest-frame with T_{90,rf}=1.6 s, which suggests the possibility that it might belong to the short GRBs class. The X-ray afterglow of GRB 090205 shows a complex and interesting behaviour with a possible rebrightening at 500-1000s from the trigger time and late flaring activity. Photometric observations of the GRB 090205 host galaxy argue in favor of a starburst galaxy with a stellar population younger than ~ 150 Myr. Moreover, the metallicity of Z > 0.27 Z_Sun derived from the GRB afterglow spectrum is among the highest derived from GRB afterglow measurement at high-z, suggesting that the burst occurred in a rather enriched envirorment. Finally, a detailed analysis of the afterglow spectrum shows the existence of a line corresponding to Lyman-alpha emission at the redshift of the burst. GRB 090205 is thus hosted in a typical Lyman-alpha emitter (LAE) at z=4.65. This makes the GRB 090205 host the farthest GRB host galaxy, spectroscopically confirmed, detected to date.
1006.3933 from 22 Jun 10
D.M. Coward et al.: The Zadko Telescope: A Southern Hemisphere Telescope for Optical Transient Searches, Multi-Messenger Astronomy and Education
D.G. Blair, J. Zadko, M. Boer, P. Thierry, E.J. Howell, S. Gordon, A. Ahmat, J. Moore, K. Frost The new 1-m f/4 fast-slew Zadko Telescope was installed in June 2008 about 70 km north of Perth, Western Australia. It is the only metre-class optical facility at this southern latitude between the east coast of Australia and South Africa, and can rapidly image optical transients at a longitude not monitored by other similar facilities. We report on first imaging tests of a pilot program of minor planet searches, and Target of Opportunity observations triggered by the Swift satellite. In 12 months, 6 gamma-ray burst afterglows were detected, with estimated magnitudes; two of them, GRB 090205 (z = 4.65) and GRB 090516 (z = 4.11), are among the most distant optical transients imaged by an Australian telescope. Many asteroids were observed in a systematic 3-month search. In September 2009, an automatic telescope control system was installed, which will be used to link the facility to a global robotic telescope network; future targets will include fast optical transients triggered by highenergy satellites, radio transient detections, and LIGO gravitational wave candidate events. We also outline the importance of the facility as a potential tool for education, training, and public outreach.

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Jochen Greiner, last update: 22-Jun-2010 [Disclaimer]