Gamma-ray Burst 140215A

(All information courtesy of the instrument teams.)

Previous IAU Circulars

none

Results of Observations

GCN/BACODINE POSITION NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 15 Feb 14 04:07:32 UT
NOTICE_TYPE:     Swift-BAT GRB Position
TRIGGER_NUM:     586680,   Seg_Num: 0
GRB_RA:          104.136d {+06h 56m 33s} (J2000),
                 104.385d {+06h 57m 32s} (current),
                 103.253d {+06h 53m 01s} (1950)
GRB_DEC:         +41.780d {+41d 46' 49"} (J2000),
                 +41.761d {+41d 45' 39"} (current),
                 +41.846d {+41d 50' 46"} (1950)
GRB_ERROR:       3.00 [arcmin radius, statistical only]
GRB_INTEN:       4952 [cnts]    Image_Peak=249 [image_cnts]
TRIGGER_DUR:     1.024 [sec] 
TRIGGER_INDEX:   155     E_range: 50-350 keV
BKG_INTEN:       16367 [cnts]
BKG_TIME:        14812.35 SOD {04:06:52.35} UT
BKG_DUR:         8 [sec]
GRB_DATE:        16703 TJD;    46 DOY;   14/02/15
GRB_TIME:        14830.27 SOD {04:07:10.27} UT
GRB_PHI:         155.65 [deg]
GRB_THETA:        46.60 [deg]
SOLN_STATUS:     0x3
RATE_SIGNIF:     58.63 [sigma]
IMAGE_SIGNIF:    12.63 [sigma]
MERIT_PARAMS:     +1  +0  +0  +0  +3  +2  +0  +0 +66  +0 
SUN_POSTN:       328.63d {+21h 54m 30s}  -12.72d {-12d 43' 05"}
SUN_DIST:        131.91 [deg]   Sun_angle= -9.1 [hr] (East of Sun)
MOON_POSTN:      148.96d {+09h 55m 50s}   +7.85d {+07d 51' 08"}
MOON_DIST:        51.88 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      174.79, 18.58 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      101.10, 18.88 [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 = 274.16,14.11 [deg].

red DSS finding chart ps-file

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 15 Feb 14 04:09:37 UT
NOTICE_TYPE:     Swift-XRT Position
TRIGGER_NUM:     586680,   Seg_Num: 0
GRB_RA:          104.1489d {+06h 56m 35.73s} (J2000),
                 104.3979d {+06h 57m 35.50s} (current),
                 103.2664d {+06h 53m 03.93s} (1950)
GRB_DEC:         +41.7858d {+41d 47' 08.8"} (J2000),
                 +41.7664d {+41d 45' 59.0"} (current),
                 +41.8518d {+41d 51' 06.3"} (1950)
GRB_ERROR:       6.1 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       6.19e-10 [erg/cm2/sec]
GRB_SIGNIF:      5.38 [sigma]
IMG_START_DATE:  16703 TJD;    46 DOY;   14/02/15
IMG_START_TIME:  14948.03 SOD {04:09:08.03} UT,   117.8 [sec] since BAT Trigger Time
TAM[0-3]:        327.67 237.20 261.61 243.66
AMPLIFIER:       2
WAVEFORM:        134
SUN_POSTN:       328.63d {+21h 54m 31s}  -12.72d {-12d 43' 03"}
SUN_DIST:        131.91 [deg]   Sun_angle= -9.1 [hr] (East of Sun)
MOON_POSTN:      148.98d {+09h 55m 54s}   +7.85d {+07d 50' 49"}
MOON_DIST:        51.88 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      174.79, 18.59 [deg] galactic lon,lat of the burst
ECL_COORDS:      101.11, 18.89 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.  
COMMENTS:        The XRT position is 0.67 arcmin from the BAT position.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 15 Feb 14 04:09:47 UT
NOTICE_TYPE:     Swift-XRT Image
TRIGGER_NUM:     586680,   Seg_Num: 0
GRB_RA:          104.1489d {+06h 56m 35.7s} (J2000),
                 104.3979d {+06h 57m 35.5s} (current),
                 103.2664d {+06h 53m 03.9s} (1950)
GRB_DEC:         +41.7858d {+41d 47' 08.8"} (J2000),
                 +41.7664d {+41d 45' 59.0"} (current),
                 +41.8518d {+41d 51' 06.3"} (1950)
GRB_ERROR:       5.8 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       29 [cnts]
IMG_START_DATE:  16703 TJD;    46 DOY;   14/02/15
IMG_START_TIME:  14948.03 SOD {04:09:08.03} UT,   117.8 [sec] since BAT Trigger Time
CENTROID_X:      318.99,  raw= 319  [pixels]
CENTROID_Y:      316.01,  raw= 316  [pixels]
ROLL:            293.67 [deg]
GAIN:            1
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   42.94
GRB_POS_XRT_Z:   32.28
IMAGE_URL:       sw00586680000msxps_rw.img
SUN_POSTN:       328.63d {+21h 54m 31s}  -12.72d {-12d 43' 03"}
SUN_DIST:        131.91 [deg]   Sun_angle= -9.1 [hr] (East of Sun)
MOON_POSTN:      148.98d {+09h 55m 55s}   +7.85d {+07d 50' 48"}
MOON_DIST:        51.89 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      174.79, 18.59 [deg] galactic lon,lat of the burst
ECL_COORDS:      101.11, 18.89 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 15 Feb 14 04:09:54 UT
NOTICE_TYPE:     Swift-XRT Processed Image
TRIGGER_NUM:     586680,   Seg_Num: 0
GRB_RA:          104.1489d {+06h 56m 35.7s} (J2000),
                 104.3979d {+06h 57m 35.5s} (current),
                 103.2664d {+06h 53m 03.9s} (1950)
GRB_DEC:         +41.7858d {+41d 47' 08.8"} (J2000),
                 +41.7664d {+41d 45' 59.0"} (current),
                 +41.8518d {+41d 51' 06.3"} (1950)
GRB_ERROR:       5.8 [arcsec, radius, statistical plus systematic]
GRB_INTEN:       29 [cnts]
IMG_START_DATE:  16703 TJD;    46 DOY;   14/02/15
IMG_START_TIME:  14948.03 SOD {04:09:08.03} UT,   117.8 [sec] since BAT Trigger Time
CENTROID_X:      318.99,  raw= 319  [pixels]
CENTROID_Y:      316.01,  raw= 316  [pixels]
ROLL:            293.67 [deg]
GAIN:            1
MODE:            3, Long Image mode
WAVEFORM:        134
EXPO_TIME:       2.50 [sec]
GRB_POS_XRT_Y:   42.94
GRB_POS_XRT_Z:   32.28
IMAGE_URL:       sw00586680000msxps_rw.img
SUN_POSTN:       328.63d {+21h 54m 31s}  -12.72d {-12d 43' 03"}
SUN_DIST:        131.91 [deg]   Sun_angle= -9.1 [hr] (East of Sun)
MOON_POSTN:      148.98d {+09h 55m 55s}   +7.85d {+07d 50' 47"}
MOON_DIST:        51.89 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      174.79, 18.59 [deg] galactic lon,lat of the burst
ECL_COORDS:      101.11, 18.89 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Processed Image.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 15 Feb 14 04:10:59 UT
NOTICE_TYPE:     Swift-BAT GRB Lightcurve
TRIGGER_NUM:     586680,   Seg_Num: 0
GRB_RA:          104.136d {+06h 56m 33s} (J2000),
                 104.385d {+06h 57m 32s} (current),
                 103.253d {+06h 53m 01s} (1950)
GRB_DEC:         +41.780d {+41d 46' 49"} (J2000),
                 +41.761d {+41d 45' 39"} (current),
                 +41.846d {+41d 50' 46"} (1950)
GRB_DATE:        16703 TJD;    46 DOY;   14/02/15
GRB_TIME:        14830.27 SOD {04:07:10.27} UT
TRIGGER_INDEX:   155
GRB_PHI:         155.65 [deg]
GRB_THETA:        46.60 [deg]
DELTA_TIME:      -31.00 [sec]
TRIGGER_DUR:     1.024 [sec] 
SOLN_STATUS:     0x3
RATE_SIGNIF:     58.63 [sigma]
IMAGE_SIGNIF:    12.63 [sigma]
LC_URL:          sw00586680000msb.lc
SUN_POSTN:       328.63d {+21h 54m 31s}  -12.72d {-12d 43' 02"}
SUN_DIST:        131.90 [deg]   Sun_angle= -9.1 [hr] (East of Sun)
MOON_POSTN:      148.99d {+09h 55m 57s}   +7.84d {+07d 50' 37"}
MOON_DIST:        51.90 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      174.79, 18.58 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      101.10, 18.88 [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 = 274.16,14.11 [deg].

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 15 Feb 14 04:12:18 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     586680,   Seg_Num: 0
POINT_RA:        104.144d {+06h 56m 34s} (J2000)
POINT_DEC:       +41.800d {+41d 47' 59"} (J2000)
POINT_ROLL:      293.668d
IMG_START_DATE:  16703 TJD;    46 DOY;   14/02/15
IMG_START_TIME:  14956.21 SOD {04:09:16.21} UT,   125.9 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        2.469
N_STARS:         74
X_OFFSET:        384 [pixels]
Y_OFFSET:        424 [pixels]
X_MAX:           1343 [pixels]
Y_MAX:           1383 [pixels]
DET_THRESH:      13
PHOTO_THRESH:    7
SL_URL:          sw00586680000msufc0125.fits
SUN_POSTN:       328.63d {+21h 54m 31s}  -12.72d {-12d 43' 01"}
SUN_DIST:        131.90 [deg]   Sun_angle= -9.1 [hr] (East of Sun)
MOON_POSTN:      149.00d {+09h 55m 59s}   +7.84d {+07d 50' 25"}
MOON_DIST:        51.91 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      174.77, 18.59 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      101.10, 18.90 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 15 Feb 14 04:12:47 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     586680,   Seg_Num: 0
POINT_RA:        104.144d {+06h 56m 34s} (J2000)
POINT_DEC:       +41.800d {+41d 47' 59"} (J2000)
POINT_ROLL:      293.668d
IMG_START_DATE:  16703 TJD;    46 DOY;   14/02/15
IMG_START_TIME:  14956.21 SOD {04:09:16.21} UT,   125.9 [sec] since BAT Trigger Time
FILTER:          10, White
BKG_MEAN:        2.469
N_STARS:         74
X_OFFSET:        384 [pixels]
Y_OFFSET:        424 [pixels]
X_MAX:           1343 [pixels]
Y_MAX:           1383 [pixels]
DET_THRESH:      13
PHOTO_THRESH:    7
SL_URL:          sw00586680000msufc0125.fits
SUN_POSTN:       328.63d {+21h 54m 31s}  -12.72d {-12d 43' 00"}
SUN_DIST:        131.90 [deg]   Sun_angle= -9.1 [hr] (East of Sun)
MOON_POSTN:      149.00d {+09h 56m 00s}   +7.84d {+07d 50' 20"}
MOON_DIST:        51.92 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      174.77, 18.59 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      101.10, 18.90 [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:     Sat 15 Feb 14 04:13:59 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     586680,   Seg_Num: 0
POINT_RA:        104.144d {+06h 56m 34s} (J2000)
POINT_DEC:       +41.800d {+41d 47' 59"} (J2000)
ROLL:            293.668d
IMG_START_DATE:  16703 TJD;    46 DOY;   14/02/15
IMG_START_TIME:  14956.21 SOD {04:09:16.21} UT,   125.9 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     414130167
X_OFFSET:        700 [pixels]
Y_OFFSET:        822 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       860
Y_GRB_POS:       982
BINNING_INDEX:   1
IM_URL:          sw00586680000msuni0137.fits
SUN_POSTN:       328.63d {+21h 54m 31s}  -12.72d {-12d 43' 00"}
SUN_DIST:        131.90 [deg]   Sun_angle= -9.1 [hr] (East of Sun)
MOON_POSTN:      149.01d {+09h 56m 03s}   +7.84d {+07d 50' 09"}
MOON_DIST:        51.93 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      174.77, 18.59 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      101.10, 18.90 [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:     Sat 15 Feb 14 04:14:04 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     586680,   Seg_Num: 0
POINT_RA:        104.144d {+06h 56m 34s} (J2000)
POINT_DEC:       +41.800d {+41d 47' 59"} (J2000)
ROLL:            293.668d
IMG_START_DATE:  16703 TJD;    46 DOY;   14/02/15
IMG_START_TIME:  14956.21 SOD {04:09:16.21} UT,   125.9 [sec] since BAT Trigger Time
FILTER:          10, White
EXPOSURE_ID:     414130167
X_OFFSET:        700 [pixels]
Y_OFFSET:        822 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       860
Y_GRB_POS:       982
BINNING_INDEX:   1
IM_URL:          sw00586680000msuni0137.fits
SUN_POSTN:       328.63d {+21h 54m 31s}  -12.72d {-12d 43' 00"}
SUN_DIST:        131.90 [deg]   Sun_angle= -9.1 [hr] (East of Sun)
MOON_POSTN:      149.01d {+09h 56m 03s}   +7.84d {+07d 50' 08"}
MOON_DIST:        51.93 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      174.77, 18.59 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      101.10, 18.90 [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:     Sat 15 Feb 14 04:15:41 UT
NOTICE_TYPE:     Swift-UVOT Position
TRIGGER_NUM:     586680,   Seg_Num: 0
GRB_RA:          104.1492d {+06h 56m 35.80s} (J2000),
                 104.3982d {+06h 57m 35.57s} (current),
                 103.2667d {+06h 53m 04.00s} (1950)
GRB_DEC:         +41.7865d {+41d 47' 11.3"} (J2000),
                 +41.7671d {+41d 46' 01.6"} (current),
                 +41.8525d {+41d 51' 08.9"} (1950)
GRB_ERROR:       0.7 [arcsec radius, statistical only]
GRB_MAG:         15.07 +/- 0.14 [mag]
FILTER:          10, White
IMG_START_DATE:  16703 TJD;    46 DOY;   14/02/15
IMG_START_TIME:  14955.00 SOD {04:09:15.00} UT,   124.7 [sec] since BAT Trigger Time
SUN_POSTN:       328.63d {+21h 54m 32s}  -12.72d {-12d 42' 58"}
SUN_DIST:        131.91 [deg]   Sun_angle= -9.1 [hr] (East of Sun)
MOON_POSTN:      149.02d {+09h 56m 06s}   +7.83d {+07d 49' 54"}
MOON_DIST:        51.93 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      174.79, 18.59 [deg] galactic lon,lat of the burst (or transient)
ECL_COORDS:      101.11, 18.89 [deg] ecliptic lon,lat of the burst (or transient)
COMMENTS:        SWIFT UVOT Position Notice.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.  
COMMENTS:        The UVOT position is 2.9 arcsec from the XRT position.  
COMMENTS:        Result based on Genie data.  
COMMENTS:        Notice generated automatically.

GCN Circular #15837
C. B. Markwardt (NASA/GSFC), S. D. Barthelmy (GSFC), L. M. Z. Hagen (PSU), J. A. Kennea (PSU), V. Mangano (PSU), F. E. Marshall (NASA/GSFC), C. J. Mountford (U Leicester), K. L. Page (U Leicester), D. M. Palmer (LANL) and M. H. Siegel (PSU) report on behalf of the Swift Team:
At 04:07:10 UT, the Swift Burst Alert Telescope (BAT) triggered and located GRB 140215A (trigger=586680). Swift slewed immediately to the burst. The BAT on-board calculated location is RA, Dec 104.136, +41.780 which is
```
   RA(J2000)  =  06h 56m 33s
   Dec(J2000) = +41d 46' 49"
```
with an uncertainty of 3 arcmin (radius, 90% containment, including systematic uncertainty). The BAT light curve shows a couple of overlapping FRED-like peaks with a duration of about 25 sec. The peak count rate was ~4500 counts/sec (15-350 keV), at ~0 sec after the trigger.
The XRT began observing the field at 04:09:08.0 UT, 117.7 seconds after the BAT trigger. XRT found a bright, uncatalogued X-ray source located at RA, Dec 104.1489, 41.7858 which is equivalent to:
```
   RA(J2000)  = +06h 56m 35.74s
   Dec(J2000) = +41d 47' 08.9"
```
with an uncertainty of 6.1 arcseconds (radius, 90% containment). This location is 40 arcseconds from the BAT onboard position, within the BAT error circle. No event data are yet available to determine the column density using X-ray spectroscopy.
The initial flux in the 2.5 s image was 6.19e-10 erg cm^-2 s^-1 (0.2-10 keV).
UVOT took a finding chart exposure of 150 seconds with the White filter starting 125 seconds after the BAT trigger. There is a candidate afterglow in the rapidly available 2.7'x2.7' sub-image at
```
  RA(J2000)  =	06:56:35.83 = 104.14928
  DEC(J2000) = +41:47:11.8  =  41.78660
```
with a 90%-confidence error radius of about 0.74 arc sec. This position is 3.1 arc sec. from the center of the XRT error circle. The estimated magnitude is 15.08 with a 1-sigma error of about 0.14. No correction has been made for the expected extinction corresponding to E(B-V) of 0.09.
Burst Advocate for this burst is C. B. Markwardt (Craig.Markwardt AT nasa.gov). 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:     Sat 15 Feb 14 04:20:55 UT
NOTICE_TYPE:     Swift-UVOT Source List
TRIGGER_NUM:     586680,   Seg_Num: 0
POINT_RA:        104.146d {+06h 56m 35s} (J2000)
POINT_DEC:       +41.801d {+41d 48' 03"} (J2000)
POINT_ROLL:      293.673d
IMG_START_DATE:  16703 TJD;    46 DOY;   14/02/15
IMG_START_TIME:  15168.14 SOD {04:12:48.14} UT,   337.9 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        0.713
N_STARS:         67
X_OFFSET:        380 [pixels]
Y_OFFSET:        502 [pixels]
X_MAX:           1339 [pixels]
Y_MAX:           1461 [pixels]
DET_THRESH:      7
PHOTO_THRESH:    3
SL_URL:          sw00586680000msufc0337.fits
SUN_POSTN:       328.64d {+21h 54m 32s}  -12.72d {-12d 42' 53"}
SUN_DIST:        131.90 [deg]   Sun_angle= -9.1 [hr] (East of Sun)
MOON_POSTN:      149.07d {+09h 56m 16s}   +7.82d {+07d 49' 06"}
MOON_DIST:        51.98 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      174.77, 18.59 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      101.10, 18.91 [deg] ecliptic lon,lat of the pointing direction
COMMENTS:        SWIFT-UVOT Source List.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 15 Feb 14 04:21:33 UT
NOTICE_TYPE:     Swift-UVOT Processed Source List
TRIGGER_NUM:     586680,   Seg_Num: 0
POINT_RA:        104.146d {+06h 56m 35s} (J2000)
POINT_DEC:       +41.801d {+41d 48' 03"} (J2000)
POINT_ROLL:      293.673d
IMG_START_DATE:  16703 TJD;    46 DOY;   14/02/15
IMG_START_TIME:  15168.14 SOD {04:12:48.14} UT,   337.9 [sec] since BAT Trigger Time
FILTER:          7, U
BKG_MEAN:        0.713
N_STARS:         67
X_OFFSET:        380 [pixels]
Y_OFFSET:        502 [pixels]
X_MAX:           1339 [pixels]
Y_MAX:           1461 [pixels]
DET_THRESH:      7
PHOTO_THRESH:    3
SL_URL:          sw00586680000msufc0337.fits
SUN_POSTN:       328.64d {+21h 54m 33s}  -12.71d {-12d 42' 53"}
SUN_DIST:        131.90 [deg]   Sun_angle= -9.1 [hr] (East of Sun)
MOON_POSTN:      149.07d {+09h 56m 17s}   +7.82d {+07d 48' 60"}
MOON_DIST:        51.98 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      174.77, 18.59 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      101.10, 18.91 [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:     Sat 15 Feb 14 04:21:49 UT
NOTICE_TYPE:     Swift-XRT Position UPDATE
TRIGGER_NUM:     586680,   Seg_Num: 0
GRB_RA:          104.1493d {+06h 56m 35.83s} (J2000),
                 104.3983d {+06h 57m 35.60s} (current),
                 103.2668d {+06h 53m 04.02s} (1950)
GRB_DEC:         +41.7860d {+41d 47' 09.6"} (J2000),
                 +41.7666d {+41d 45' 59.8"} (current),
                 +41.8520d {+41d 51' 07.1"} (1950)
GRB_ERROR:       2.2 [arcsec radius, statistical plus systematic, 90% containment]
GRB_INTEN:       1.00e-10 [erg/cm2/sec]
GRB_SIGNIF:      10.00 [sigma]
IMG_START_DATE:  16703 TJD;    46 DOY;   14/02/15
IMG_START_TIME:  15122.00 SOD {04:12:02.00} UT,   291.7 [sec] since BAT Trigger Time
TAM[0-3]:        100.00 100.00 100.00 100.00
AMPLIFIER:       1
WAVEFORM:        31
SUN_POSTN:       328.64d {+21h 54m 33s}  -12.71d {-12d 42' 53"}
SUN_DIST:        131.90 [deg]   Sun_angle= -9.1 [hr] (East of Sun)
MOON_POSTN:      149.07d {+09h 56m 18s}   +7.82d {+07d 48' 57"}
MOON_DIST:        51.97 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      174.79, 18.59 [deg] galactic lon,lat of the burst
ECL_COORDS:      101.11, 18.89 [deg] ecliptic lon,lat of the burst
COMMENTS:        SWIFT-XRT Coordinates.  
COMMENTS:        This Notice was ground-generated -- not flight-generated.  
COMMENTS:        This is an Update Notice -- the RA,Dec values herein supersede the previous XRT_POS Notice.  
COMMENTS:        TAM values, flux and significance fields are not valid.  
COMMENTS:        This position was automatically generated on the ground using  
COMMENTS:        Photon Counting data telemetered via TDRSS (SPER data).  
COMMENTS:        See http://www.swift.ac.uk/sper/docs.php for details.  
COMMENTS:        This position was enhanced using UVOT field astrometry.  
COMMENTS:        The probability that this is a serendipitous source in the  
COMMENTS:        SPER window is 0.58% < P(seren) < 1.1%.

GCN NOTICE

TITLE:           GCN/SWIFT NOTICE
NOTICE_DATE:     Sat 15 Feb 14 04:22:21 UT
NOTICE_TYPE:     Swift-UVOT Image
TRIGGER_NUM:     586680,   Seg_Num: 0
POINT_RA:        104.146d {+06h 56m 35s} (J2000)
POINT_DEC:       +41.801d {+41d 48' 03"} (J2000)
ROLL:            293.673d
IMG_START_DATE:  16703 TJD;    46 DOY;   14/02/15
IMG_START_TIME:  15168.14 SOD {04:12:48.14} UT,   337.9 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     414130379
X_OFFSET:        700 [pixels]
Y_OFFSET:        822 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       860
Y_GRB_POS:       982
BINNING_INDEX:   1
IM_URL:          sw00586680000msuni0349.fits
SUN_POSTN:       328.64d {+21h 54m 33s}  -12.71d {-12d 42' 52"}
SUN_DIST:        131.90 [deg]   Sun_angle= -9.1 [hr] (East of Sun)
MOON_POSTN:      149.08d {+09h 56m 19s}   +7.81d {+07d 48' 52"}
MOON_DIST:        51.99 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      174.77, 18.59 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      101.10, 18.91 [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:     Sat 15 Feb 14 04:22:37 UT
NOTICE_TYPE:     Swift-UVOT Processed Image
TRIGGER_NUM:     586680,   Seg_Num: 0
POINT_RA:        104.146d {+06h 56m 35s} (J2000)
POINT_DEC:       +41.801d {+41d 48' 03"} (J2000)
ROLL:            293.673d
IMG_START_DATE:  16703 TJD;    46 DOY;   14/02/15
IMG_START_TIME:  15168.14 SOD {04:12:48.14} UT,   337.9 [sec] since BAT Trigger Time
FILTER:          7, U
EXPOSURE_ID:     414130379
X_OFFSET:        700 [pixels]
Y_OFFSET:        822 [pixels]
WIDTH:           160 [pixels]
HEIGHT:          160 [pixels]
X_GRB_POS:       860
Y_GRB_POS:       982
BINNING_INDEX:   1
IM_URL:          sw00586680000msuni0349.fits
SUN_POSTN:       328.64d {+21h 54m 33s}  -12.71d {-12d 42' 52"}
SUN_DIST:        131.90 [deg]   Sun_angle= -9.1 [hr] (East of Sun)
MOON_POSTN:      149.08d {+09h 56m 19s}   +7.81d {+07d 48' 50"}
MOON_DIST:        51.99 [deg]
MOON_ILLUM:      100 [%]
GAL_COORDS:      174.77, 18.59 [deg] galactic lon,lat of the pointing direction
ECL_COORDS:      101.10, 18.91 [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 #15838
S.B. Cenko (NASA-GSFC), V. Toy (UMD), A. Kutyrev (NASA-GSFC), J. Capone (UMD), E. Troja (NASA-GSFC), A. Cucchiara (NASA-GSFC), S. Veilleux (UMD), and S. Gezari (UMD) report on behalf of a larger collaboration:
We imaged the location of the Swift GRB140215A (Markwardt et al., GCN 15837) with the Large Monolithic Imager mounted on the 4.3m Discovery Channel Telescope. Observations began at 4:09:50 UT on 15 February 2014, ~ 2.7 min after the Swift BAT trigger time, and were taken under sub-optimal conditions (moderate cloud cover and bright moon).
We detect the bright optical afterglow in individual exposures beginning at this time. Using several nearby point sources from USNO-B1 reference, we measure a magnitude of r' ~ 13.5 mag in our first exposure. Multi-color observations are ongoing.
We thank the entire staff of the Discovery Channel Telescope for assistance with these observations.
GCN Circular #15839
WeiKang Zheng, Alexei V. Filippenko, Adam Morgan (UC Berkeley), and S. B. Cenko (NASA/Goddard Space Flight Center) report on behalf of the KAIT GRB team:
The 0.76-m Katzman Automatic Imaging Telescope (KAIT), located at Lick Observatory, responded to Swift GRB 140215A (Markwardt et al., GCN 15837) starting at 04:09:02 UT, 112 s after the burst. Observations were performed with an automatic sequence in the V, I and clear (roughly R) filters, and the exposure time was 20 s per image. We detect the bright optical afterglow (Markwardt et al., GCN 15837; Cenko et al., GCN 15838) in all the individual images. The afterglow decayed from mag~13.7 (mid t-t0=189s) to mag~15.9 (mid t-t0=1094s) in our clear band images calibrated to USNO B1.0 catalog. Observations are on going.
GCN Circular #15840
A. LaCluyze, J. Haislip, D. Reichart, A. Trotter, A. Foster, N. Frank, K. Ivarsen, J. Moore, M. Nysewander, R. Beauchemin, T. Berger, M. Carroll, H. T. Cromartie, R. Egger, M. Hinckle, A. Ireland, M. Maples, L. Scott, and J. A. Crain report:
Skynet observed the Swift-BAT localization of GRB 140215A (Markwardt et al., GCN 15837, Swift trigger 586680) with six of the PROMPT telescopes located at CTIO in Chile. Observations began at ~59s after the burst in BVRI and luminance. We detect a fading optical source in all bands at the position of the source detected by Markwardt et al.
A preliminary light curve calibrated to USNOB and NOMAD catalog stars can be found at: http://www.skynet.unc.edu/grb/grb140215a.png
Further observations are ongoing.
GCN Circular #15841
Nat Butler (ASU), Alan M. Watson (UNAM), Alexander Kutyrev (GSFC), Willia= m H. Lee (UNAM), Michael G. Richer (UNAM), Chris Klein (UCB), Ori Fox (UCB)= , J. Xavier Prochaska (UCSC), Josh Bloom (UCB), Antonino Cucchiara (ORAU/GSFC), Eleonora Troja (GSFC), Owen Littlejohns (ASU), Enrico Ramirez-Ruiz (UCSC), Jos=E9 A. de Diego (UNAM), Leonid Georgiev (UNAM), J= es=FAs Gonz=E1lez (UNAM), Carlos Rom=E1n-Z=FA=F1iga (UNAM), Neil Gehrels (GSFC),= and Harvey Moseley (GSFC) report:
We observed the field of GRB 140215A (Markwardt, et al., GCN 15837) with the Reionization and Transients Infrared Camera (RATIR; www.ratir.org) on the 1.5m Harold Johnson Telescope at the Observatorio Astron=F3mico Nacio= nal on Sierra San Pedro M=E1rtir beginning 110 seconds after the Swift BAT trigger. Initial data were taken out-of-focus, and will require special handling. In-focus data were acquired from 2014/02 15.20 to 2014/02 15.22UTC (0.65 to 1.13 hours after the BAT trigger), corresponding to a total of 0.36 hours exposure in the r and i bands and 0.15 hours exposure in the Z= , Y, J, and H bands.
For a source within the Swift UVOT error circle, in comparison with 2MASS= , we obtain the following detections:
```
  r     17.45 +/- 0.01
  i     17.08 +/- 0.01
  Z     16.82 +/- 0.01
  Y     16.55 +/- 0.02
  J     16.34 +/- 0.01
  H     16.05 +/- 0.01
```
These magnitudes are in the AB system and are not corrected for Galactic extinction in the direction of the GRB.
We thank the staff of the Observatorio Astron=F3mico Nacional in San Pedro M=E1rtir. Further observations are ongoing.
GCN Circular #15842
P.A. Evans, M.R. Goad, J.P. Osborne and A.P. Beardmore (U. Leicester) report on behalf of the Swift-XRT team.
Using 2359 s of XRT Photon Counting mode data and 4 UVOT images for GRB 140215A, 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 = 104.14917, +41.78625 which is equivalent to:
```
RA (J2000): 06h 56m 35.80s
Dec (J2000): +41d 47' 10.5"
```
with an uncertainty of 1.7 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 #15843
Veli-Pekka Hentunen, Markku Nissinen and Tuomo Salmi (Taurus Hill Observatory, Varkaus, Finland) report:
We have detected GRB 140215A optical afterglow at iTelescope observatory T24 (Auberry, California) using 0.61-m/6.5 astrograph and FLI-PL09000 CCD camera. The observations were started at 2014-02-15 04:33:26 (UT) and stopped at 06:05:49 (UT). Fourteen photometric V filter images and eight unfiltered images with different exposure time were made.
The afterglow was detected at the following position RA 06:56:35.84 and DEC +41:47:11.5.
The following magnitudes were obtained from the observations using NOMAD1 1317-0185429 (V= 13.190 and R=13.190) as a comparison star:
```
Tmid(s)+T0    Filter         Exp. time      Mag              Mag err.
1107              V              3x60s           17.00V          0.12
2090              V              3x120s         17.30V          0.13
3283              V              3x60s           17.96V          0.34
3678              V              3x120s         17.97V          0.21
4496              V              2x300s         18.44V          0.20
5817              unfiltered   3x60s           18.67CR        0.32
6224              unfiltered   3x120s         18.89CR        0.25
6797              unfiltered   2x300s         19.07CR        0.21
```
GCN Circular #15844
D. A. Perley (Caltech) and S. B. Cenko (NASA-GSFC) report:
The Swift-BAT alert for GRB 140215A (Markwardt et al., GCN 15837) automatically triggered the Palomar 60-inch telescope, which slewed to the position and began started a sequence of r, i, and z images beginning at 04:09:54 UT, 2.74 minutes after the initial trigger. The optical afterglow is well-detected in all images and filters, and follow-up has continued through to the present time. The afterglow light curve fades as a simple unbroken power-law with a decay index of alpha=1.19 throughout this period. Calibrating relative to USNO-B1.0, we estimate a magnitude (in the most recent imaging, at 387 minutes post-trigger) of R = 19.93 +/- 0.13 mag.
Spectroscopic follow-up is encouraged.
GCN Circular #15845
K.L. Page (U. Leicester) and C. B. Markwardt (NASA/GSFC) report on behalf of the Swift-XRT team:
We have analysed 7.8 ks of XRT data for GRB 140215A (Markwardt et al. GCN Circ. 15837), from 124 s to 18.2 ks after the BAT trigger. The data comprise 159 s in Windowed Timing (WT) mode with the remainder in Photon Counting (PC) mode. The enhanced XRT position for this burst was given by Evans et al. (GCN Circ. 15842).
The light curve can be modelled with a power-law decay with a decay index of alpha=1.21 (+/-0.03).
A spectrum formed from the WT mode data can be fitted with an absorbed power-law with a photon spectral index of 1.49 (+0.12, -0.07). The best-fitting absorption column is consistent with the Galactic value of 9.7 x 10^20 cm^-2 (Kalberla et al. 2005). The PC mode spectrum has a photon index of 1.91 (+0.18, -0.17) and a best-fitting absorption column of 1.7 (+/-0.5) x 10^21 cm^-2. The counts to observed (unabsorbed) 0.3-10 keV flux conversion factor deduced from this spectrum is 4.0 x 10^-11 (5.4 x 10^-11) erg cm^-2 count^-1.
A summary of the PC-mode spectrum is thus:
```
Total column:	     1.7 (+/-0.5) x 10^21 cm^-2
Galactic foreground: 9.7 x 10^20 cm^-2
Excess significance: 2.5 sigma
Photon index:	     1.91 (+0.18, -0.17)
```
If the light curve continues to decay with a power-law decay index of 1.21, the count rate at T+24 hours will be 5.1 x 10^-3 count s^-1, corresponding to an observed (unabsorbed) 0.3-10 keV flux of 2.0 x 10^-13 (2.8 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/00586680.
This circular is an official product of the Swift-XRT team.
GCN Circular #15846
L. Elenin (KIAM), A. Volnova (IKI), I. Molotov (KIAM), A. Pozanenko (IKI) report on behalf of larger GRB follow-up collaboration:
We observed of the field of the Swift GRB 140215A (Markwardt et al., GCN 15837) with 0.4-m telescope of ISON-NM observatory starting on Feb., 15 (UT) 04:08:22, i.e 72 seconds after Swift burst trigger. We took 35 unfiltered images of 30 s exposures. We clearly detect the bright optical afterglow of GRB 140215A (Markwardt et al., GCN 15837; Cenko et al., GCN 15838) in each separate image. Coordinates of the optical afterglow (J2000) 06 56 35.83 +41 47 11.4 (uncertainties of 0.5 arcsec) coincide with OT coordinates (Markwardt et al., GCN 15837). Preliminary photometry is following:
```
UT mid,      T0+        Filter    Exposure,  OT,    err OT
                  mid                   s
04:08:22      0.00101 none    30            13.60   0.03
04:37:01      0.02090 none    30            16.46   0.20
```
The photometry is based on USNO-B1.0 nearby stars:
```
N USNO-B1.0id RA                Dec           R2
1 1318-0183851 06:56:13.01 +41:49:29.2 12.37
2 1317-0181981 06:56:37.13 +41:44:34.4 14.39
3 1317-0181986 06:56:38.48 +41:44:12.8 14.50
```
The power law index of ~-1.2 of our light curve starting from 0.0025 days and up to the end of our observations coincides with the index reported by Perley and Cenko (GCN 15844).
GCN Circular #15847
S. D. Barthelmy (GSFC), W. H. Baumgartner (GSFC/UMBC), J. R. Cummings (GSFC/UMBC), N. Gehrels (GSFC), H. A. Krimm (GSFC/USRA), A. Y. Lien (NASA/UMBC), C. B. Markwardt (GSFC), D. M. Palmer (LANL), T. Sakamoto (AGU), M. Stamatikos (OSU), J. Tueller (GSFC), T. N. Ukwatta (MSU) (i.e. the Swift-BAT team):
Using the data set from T-240 to T+824 sec from recent telemetry downlinks, we report further analysis of BAT GRB 140215A (trigger #586680) (Markwardt, et al., GCN Circ. 15837). The BAT ground-calculated position is RA, Dec = 104.129, 41.787 deg, which is
```
   RA(J2000)  =  06h 56m 31.0s 
   Dec(J2000) = +41d 47' 12.2" 
```
with an uncertainty of 1.1 arcmin, (radius, sys+stat, 90% containment). The partial coding was 15%.
The mask-weighted light curve shows several overlapping peaks starting at ~T-15 sec, peaking at ~T+1 sec, and ending at ~T+180 sec. T90 (15-350 keV) is 84.2 +- 53.1 sec (estimated error including systematics).
The time-averaged spectrum from T-1.47 to T+181.76 sec is best fit by a simple power-law model. The power law index of the time-averaged spectrum is 1.19 +- 0.08. The fluence in the 15-150 keV band is 7.8 +- 0.3 x 10^-6 erg/cm2. The 1-sec peak photon flux measured from T-0.01 sec in the 15-150 keV band is 7.9 +- 0.7 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/586680/BA/
GCN Circular #15848
D. Kuroda, K. Yanagisawa, Y. Shimizu, H. Toda (OAO, NAOJ), S. Nagayama (NAOJ), M. Yoshida (Hiroshima), K. Ohta (Kyoto) and N. Kawai(Tokyo Tech) report on behalf of MITSuME collaboration:
We observed the field of GRB 140215A (Markwardt et al., GCNC 15837) with the optical three color (g', Rc and Ic) CCD camera attached to the MITSuME 50cm telescope of Okayama Astrophysical Observatory.
The observation started on 2014-02-15 10:03:22 UT (~5.9 h after the burst). We detected the previously reported afterglow (Markwardt et al., GCNC 15837; Cenko et al., GCNC 15838) in Rc and Ic bands.
Photometric results and three sigma upper limit of the OT are listed below. We used GSC2.3 catalog for flux calibration.
```
#T0+[day]  MID-UT    T-EXP[sec]   g'     Rc  Rc_err   Ic  Ic_err
------------------------------------------------------------------
0.26209    10:24:34    2880.0   >19.6   18.9  0.2    18.6  0.3
------------------------------------------------------------------
T0+ : Elapsed time after the burst [day]
T-EXP: Total Exposure time [sec]
```
GCN Circular #15849
Owen Littlejohns (ASU), Nat Butler (ASU), Alan M. Watson (UNAM), Alexander Kutyrev (GSFC), William H. Lee (UNAM), Michael G. Richer (UNAM), Chris Klein (UCB), Ori Fox (UCB), J. Xavier Prochaska (UCSC), Josh Bloom (UCB), Antonino Cucchiara (ORAU/GSFC), Eleonora Troja (GSFC), Enrico Ramirez-Ruiz (UCSC), Jos=E9 A. de Diego (UNAM), Leonid Georgiev (UNAM), Jes=FAs Gonz=E1lez (UNAM), Carlos Rom=E1n-Z=FA=F1iga (UNAM), Neil Gehrels (GSFC), and Harvey Moseley (GSFC) report:
We again observed the field of GRB 140215A (Markwardt, et al., GCN 15837) with the Reionization and Transients Infrared Camera (RATIR; www.ratir.org) on the 1.5m Harold Johnson Telescope at the Observatorio Astron=F3mico Nacional on Sierra San Pedro M=E1rtir from 2014/02 16.20 to 2014/02 16.36 UTC (24.65 to 28.57 hours after the BAT trigger), obtaining a total of 2.18 hours exposure in the r and i bands and 0.88 hours exposure in the Z, Y, J, and H bands.
We continue to detect the previously reported source in all bands, at fainter magnitudes than the previous epoch of RATIR observations (Butler et al., GCN 15841). In comparison with 2MASS, we obtain the following detections:
```
  r     21.51 +/- 0.11
  i     21.19 +/- 0.10
  Z     21.37 +/- 0.24
  Y     20.68 +/- 0.21
  J     20.69 +/- 0.16
  H     20.43 +/- 0.18
```
These magnitudes are in the AB system and are not corrected for Galactic extinction in the direction of the GRB. In comparison to the previous epoch of RATIR observations the source has faded with approximate power-law index of t^-1 in all bands.
We thank the staff of the Observatorio Astron=F3mico Nacional in San Pedro M=E1rtir.
GCN Circular #15850
V. Toy (UMD), S.B. Cenko (NASA-GSFC), A. Kutyrev (NASA-GSFC), J. Capone (UMD), E. Troja (NASA-GSFC), A. Cucchiara (NASA-GSFC), S. Veilleux (UMD), and S. Gezari (UMD) report on behalf of a larger collaboration:
We re-observed the bright optical afterglow of GRB140215A (Swift trigger 586680, Markwardt et al., GCN 15837, Cenko et al., GCN 15840) with the Large Monolithic Imager (LMI) on the 4.3m Discovery Channel Telescope (DCT) at Happy Jack, AZ from 2014/02/16 2:55 to 2014/02/16 4:05 UTC (0.95-1.0 days after the Swift-BAT trigger) in the g',r',i', and z' filters.
Compared with our previous observations, the afterglow continues to follow an unbroken power law with decay index of alpha=-1.20 in all filters (Perley et al., GCN 15844, and Elenin et al., GCN 15846), consistent with the simultaneous temporal decay observed in the X-rays (Page et al., GCN 15845). Specifically we measure r' = 21.6 mag (AB) at a time of 23.5 hr after the trigger, calibrating relative to USNO-B1.
We thank the entire staff of the Discovery Channel Telescope for assistance with these observations.
GCN Circular #15852
L. M. Z. Hagen (PSU) and C. B. Markwardt (NASA/GSFC) report on behalf of the Swift/UVOT team:
The Swift/UVOT began settled observations of the field of GRB 140215A 126 s after the BAT trigger (Markwardt et al., GCN Circ. 15837). A source consistent with the XRT position (Evans et al. GCN Circ. 15842) is detected in the initial UVOT exposures.
The preliminary UVOT position is:
```
    RA  (J2000) =  06:56:35.81 = 104.14920 (deg.)
    Dec (J2000) = +41:47:11.7  =  41.78659 (deg.)
```
with an estimated uncertainty of 0.50 arc sec. (radius, 90% confidence).
Preliminary detections and 3-sigma upper limits using the UVOT photometric system (Breeveld et al. 2011, AIP Conf. Proc. 1358, 373) for the early exposures are:
```
Filter         T_start(s)   T_stop(s)      Exp(s)           Mag

white (fc)         125          275          147         15.01 +/- 0.04
white              617          637           19         16.26 +/- 0.07
v                  106          117           10         14.34 +/- 0.09
b                  593          612           19         16.19 +/- 0.09
u                  337          587          245         15.53 +/- 0.05
w1                4611         4811          196        >19.86
m2                4406         4606          196        >19.51
w2                 642          662           19        >17.93
```
The magnitudes in the table are not corrected for the Galactic extinction due to the reddening of E(B-V) = 0.09 in the direction of the burst (Schlegel et al. 1998). We note that the white photometry may be affected by a nearby bright foreground star.
GCN Circular #15853
S. Golenetskii, R.Aptekar, D. Frederiks, V. Pal'shin, P. Oleynik, M. Ulanov, D. Svinkin, and T. Cline on behalf of the Konus-Wind team, report:
The long-duration GRB 140215A (Swift-BAT trigger 586680: Markwardt et al., GCN 15837; Barthelmy et al., GCN 15847) triggered Konus-Wind at T0=3D14831.638 s UT (04:07:11.638).
The burst light curve shows a multi-peaked with a total duration of ~15 s. The emission is seen up to ~10 MeV.
The Konus-Wind light curve of this GRB is available at http://www.ioffe.ru/LEA/GRBs/GRB140215_T14831/
As observed by Konus-Wind, the burst had a fluence of (1.84 =B1 0.15)x10-5 erg/cm2, and a 64-ms peak flux, measured from T0+4.800 s, of (3.57 =B1 0.35)x10-6 erg/cm2/s (both in the 20 keV - 10 MeV energy range).
The time-averaged spectrum (measured from T0 to T0+15.360 s) is best fit in the 28 keV - 15 MeV range by the GRB (Band) function with the following model parameters: the low-energy photon index alpha =3D -0.66 =B1 0.11, the high energy photon index beta =3D -2.94 =B1 0.35, the peak energy Ep =3D 214 =B1 14 keV, chi2 =3D 106/95 dof.
The spectrum near the maximum count rate (measured from T0 to T0+7.168 s) is best fit in the 20 keV - 15 MeV range by the GRB (Band) function with the following model parameters: the low-energy photon index alpha =3D -0.46 =B1 0.12, the high energy photon index beta =3D -2.83 =B1 0.26, the peak energy Ep =3D 212 =B1 14 keV, chi2 =3D 92.9/96 dof.
All the quoted values are preliminary.
GCN Circular #15855
Nat Butler (ASU), Alan M. Watson (UNAM), Alexander Kutyrev (GSFC), Willia= m H. Lee (UNAM), Michael G. Richer (UNAM), Chris Klein (UCB), Ori Fox (UCB)= , J. Xavier Prochaska (UCSC), Josh Bloom (UCB), Antonino Cucchiara (ORAU/GSFC), Eleonora Troja (GSFC), Owen Littlejohns (ASU), Enrico Ramirez-Ruiz (UCSC), Jos=E9 A. de Diego (UNAM), Leonid Georgiev (UNAM), J= es=FAs Gonz=E1lez (UNAM), Carlos Rom=E1n-Z=FA=F1iga (UNAM), Neil Gehrels (GSFC),= and Harvey Moseley (GSFC) report:
We again observed the field of GRB 140215A (Markwardt,, et al., GCN 15837= ) with the Reionization and Transients Infrared Camera (RATIR; www.ratir.org) on the 1.5m Harold Johnson Telescope at the Observatorio Astron=F3mico Nacional on Sierra San Pedro M=E1rtir from 2014/02 17.11 to 2014/02 17.20 UTC (46.46 to 48.60 hours after the BAT trigger), obtaining a total of 1.41 hours exposure in the r and i bands and 0.58 hours exposure in the Z, Y, J, and H bands.
For a source within the Swift-UVOT error circle, in comparison with 2MASS, we obtain the following detections and upper limits (3-sigma):
```
  r     22.19 +/- 0.24
  i     21.65 +/- 0.16
  Z     > 21.45
  Y     > 20.71
  J     > 20.61
  H     > 20.12
```
These magnitudes are in the AB system and are not corrected for Galactic extinction in the direction of the GRB. Compared to our observations last night (Littlejohns et al., GCN 15849), the source flux is consistent with a continued fading as t^-1.
We thank the staff of the Observatorio Astron=F3mico Nacional in San Pedro M=E1rtir.
GCN Circular #15857
A.J. van der Horst (University of Amsterdam) reports on behalf of a large collaboration:
"We observed the position of the GRB 140215A afterglow at 4.9 GHz with the Westerbork Synthesis Radio Telescope at February 17 14.69 UT to February 18 02.66 UT, i.e. 2.44 - 2.94 days after the burst (GCN 15837). We do not detect a radio source at the position of the optical counterpart (GCN 15852). The three-sigma rms noise in the map around that position is 126 microJy per beam. The formal flux measurement for a point source at the position of the optical counterpart is 51 +/- 42 microJy.
We would like to thank the WSRT staff for scheduling and obtaining these observations."
GCN Circular #15858
A. LaCluyze, J. Haislip, D. Reichart, A. Trotter, S. Poshyachinda, W. Rujopakarn, A. Foster, N. Frank, K. Ivarsen, J. Moore, M. Nysewander, R. Beauchemin, T. Berger, M. Carroll, H. T. Cromartie, R. Egger, M. Hinckle, A. Ireland, M. Maples, L. Scott, and J. A. Crain report:
Skynet continued observing the Swift-BAT localization of GRB 140215A (Markwardt et al., GCN 15837, Swift trigger 586680) with six of the PROMPT telescopes located at CTIO in Chile. LaCluyze et al. (GCN 15840) described rapid-response observations of a fading optical afterglow taken between ~1m and 6.5m after the burst in BVRI and luminance, and presented a preliminary light curve calibrated to USNOB and NOMAD catalog stars. A revised and recalibrated light curve, including observations taken at t~20-24h, is at:
http://www.skynet.unc.edu/grb/grb140215a_2.png
In stacks of ~45x160s images from the second night, we do not detect the afterglow with any degree of confidence (the I-band "detections" in the light curve plot are most likely spurious.) The 3-sigma limiting magnitudes are:
```
Band      tmid      Limit
I         21.9h     >20.2
R         21.0h     >20.5
V         21.8h     >20.5
B         21.7h     >20.3
```
Magnitudes are in the Vega system, and were calibrated to 4 APASS DR7 catalog stars in the field. They have not been corrected for line-of-sight MW dust extinction corresponding to E(B-V)=0.09 (Schlegel et al. 1998).
No further Skynet observations are scheduled.
GCN Circular #15861
J. Wren, W.T. Vestrand, P. Wozniak, and H. Davis, of Los Alamos National Laboratory report:
The RAPTOR network of robotic optical telescopes made follow-up observations of Swift trigger 586680 (Markwardt, et al., GCN 15837). Our narrow-field instruments in Los Alamos, NM, began imaging at 04:07:37.21 UT, 26.9 seconds after the BAT trigger time. We do not detect the counterpart in our three initial images, with limiting magnitudes near 14.0. The counterpart then rises above our detection limit and reaches peak brightness at magnitude 13.5 around T-Tbat=90s. The counterpart then plateaus for a period of about 50 seconds before beginning a power-law decay. Our unfiltered observations were calibrated to the USNO-B1 R-band. The following table summarizes some of our early observations.
```
t-mid(s)    exp(s)    mag     error
------------------------------------
29.45       5      >14.0
56.85       5      13.8287    0.033
83.85       5      13.5381    0.011
128.95      10     13.5608    0.008
283.35      10     14.3725    0.024
470.75      30     14.9185    0.020
```

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Jochen Greiner, last update: 19-Feb-2014 [Disclaimer]