Click here for the BAT GCN circular template
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
244.9423 -15.7242 0.0094 23.8 -56.2 2.0414 20.4 TRIG_00575650
------------------------------------------
Foreground time interval of the image:
0.000 64.000 (delta_t = 64.000 [sec])
Background time interval of the image:
Lightcurves
Notes:
- 1) All plots contain as much data as has been downloaded to date.
- 2) The mask-weighted light curves are using the flight position.
- 3) Multiple plots of different time binning/intervals are shown to cover all scenarios of short/long GRBs, rate/image triggers, and real/false positives.
- 4) For all the mask-weighted lightcurves, the y-axis units are counts/sec/det where a det is 0.4 x 0.4 = 0.16 sq cm.
- 5) The verticle lines correspond to following: green dotted lines are T50 interval, black dotted lines are T90 interval, blue solid line(s) is a spacecraft slew start time, and orange solid line(s) is a spacecraft slew end time.
- 6) Time of each bin is in the middle of the bin.
1 s binning
From T0-310 s to T0+310 s
From T100_start - 20 s to T100_end + 30 s
Full time interval
64 ms binning
Full time interval
From T100_start to T100_end
From T0-5 sec to T0+5 sec
16 ms binning
From T100_start-5 s to T100_start+5 s
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000
8 ms binning
From T100_start-3 s to T100_start+3 s
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000
2 ms binning
From T100_start-1 s to T100_start+1 s
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000
SN=5 or 10 sec. binning (whichever binning is satisfied first)
SN=5 or 10 sec. binning (T < 200 sec)
Spectra
Notes:
- 1) The fitting includes the systematic errors.
- 2) For long bursts, a spectral fit of the pre-slew DRM will introduce some errors in both a spectral shape and a normalization if the PHA file contains a lot of the slew/post-slew time interval.
- 3) For fits to more complicated models (e.g. a power-law over a cutoff power-law), the BAT team has decided to require a chi-square improvement of more than 6 for each extra dof.
- 4) For short bursts (T90<1sec), the specrtum is also fit with Blackbody, OTTB, and Double Blackbody.
Time averaged spectrum fit using the pre-slew DRM
Power-law model
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 5.45953 ( -0.553288 0.594958 )
Norm@50keV : 1.08968E-04 ( -4.90393e-05 7.45003e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 39.17 using 59 PHA bins.
# Reduced chi-squared = 0.6872 for 57 degrees of freedom
# Null hypothesis probability = 9.656689e-01
Photon flux (15-150 keV) in 64 sec: 0.262274 ( -0.0299982 0.030017 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.19788e-07 ( -5.99001e-08 6.02233e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 2.20667E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 184.67 using 59 PHA bins.
# Reduced chi-squared = 3.2976 for 56 degrees of freedom
# Null hypothesis probability = 1.189319e-15
Photon flux (15-150 keV) in 64 sec: 0.259127 ( -0.03063 0.030496 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.02732e-07 ( -6.04371e-08 6.08704e-08 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 1.23580 ( -3.25893 -1.22247 )
beta : -5.98548 ( 5.98155 1.01795 )
Epeak [keV] : 9.18208 ( -9.11356 2.85383 )
Norm@50keV : 62.3922 ( -59.1443 80903.4 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 38.72 using 59 PHA bins.
# Reduced chi-squared = 0.7040 for 55 degrees of freedom
# Null hypothesis probability = 9.529075e-01
Photon flux (15-150 keV) in 64 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 2.73046 (-0.292331 0.336922)
R^2/D10^2 : 67.7487 (-37.9287 89.7994)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 39.94 using 59 PHA bins.
# Reduced chi-squared = 0.7007 for 57 degrees of freedom
# Null hypothesis probability = 9.580150e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.408e-07 1.222e-07
25- 50 4.569e-08 1.612e-08
50-150 3.298e-11 3.076e-11
15-150 4.866e-07 1.350e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 5.09816 (-0.812936 1.04089)
Norm : 55.5847 (-26.756 55.5423)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 38.67 using 59 PHA bins.
# Reduced chi-squared = 0.6783 for 57 degrees of freedom
# Null hypothesis probability = 9.700646e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.395e-07 1.127e-07
25- 50 5.802e-08 2.088e-08
50-150 3.314e-10 2.944e-10
15-150 4.978e-07 1.406e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 2.66460 (-2.66403 0.34348)
R1^2/D10^2 : 79.4490 (-45.778 130.81)
kT2 [keV] : 21.2111 (-21.0332 -21.0332)
R2^2/D10^2 : 6.24415E-04 (-0.000641299 0.0235659)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 37.90 using 59 PHA bins.
# Reduced chi-squared = 0.6891 for 55 degrees of freedom
# Null hypothesis probability = 9.618991e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.412e-07 1.687e-07
25- 50 5.886e-08 2.547e-08
50-150 5.873e-08 5.065e-08
15-150 5.588e-07 1.974e-07
Peak spectrum fit
Power-law model
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 5.45953 ( -0.553288 0.594958 )
Norm@50keV : 1.08968E-04 ( -4.90393e-05 7.45003e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 39.17 using 59 PHA bins.
# Reduced chi-squared = 0.6872 for 57 degrees of freedom
# Null hypothesis probability = 9.656689e-01
Photon flux (15-150 keV) in 64 sec: 0.262274 ( -0.0299982 0.030017 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.19788e-07 ( -5.99001e-08 6.02233e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 2.20667E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 184.67 using 59 PHA bins.
# Reduced chi-squared = 3.2976 for 56 degrees of freedom
# Null hypothesis probability = 1.189319e-15
Photon flux (15-150 keV) in 64 sec: 0.259127 ( -0.03063 0.030496 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.02732e-07 ( -6.04371e-08 6.08704e-08 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 64.000 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 1.23580 ( -3.25893 -1.22247 )
beta : -5.98548 ( 5.98155 1.01795 )
Epeak [keV] : 9.18208 ( -9.11356 3.6649 )
Norm@50keV : 62.3922 ( -59.1443 95161.3 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 38.72 using 59 PHA bins.
# Reduced chi-squared = 0.7040 for 55 degrees of freedom
# Null hypothesis probability = 9.529075e-01
Photon flux (15-150 keV) in 64 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
Single BB
Spectral model blackbody:
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 2.73046 (-0.292331 0.336922)
R^2/D10^2 : 67.7487 (-37.9287 89.7994)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 39.94 using 59 PHA bins.
# Reduced chi-squared = 0.7007 for 57 degrees of freedom
# Null hypothesis probability = 9.580150e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.408e-07 1.368e-07
25- 50 4.569e-08 1.694e-08
50-150 3.298e-11 2.893e-11
15-150 4.866e-07 1.811e-07
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 5.09816 (-0.812936 1.04089)
Norm : 55.5847 (-26.756 55.5423)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 38.67 using 59 PHA bins.
# Reduced chi-squared = 0.6783 for 57 degrees of freedom
# Null hypothesis probability = 9.700646e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.395e-07 1.114e-07
25- 50 5.802e-08 2.069e-08
50-150 3.314e-10 2.849e-10
15-150 4.978e-07 1.303e-07
Double BB
Spectral model: bbodyrad<1> + bbodyrad<2>
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT1 [keV] : 2.66460 (-2.66403 0.34348)
R1^2/D10^2 : 79.4490 (-45.778 130.81)
kT2 [keV] : 21.2111 (-21.0332 -21.0332)
R2^2/D10^2 : 6.24415E-04 (-0.000641299 0.0261219)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 37.90 using 59 PHA bins.
# Reduced chi-squared = 0.6891 for 55 degrees of freedom
# Null hypothesis probability = 9.618991e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 4.412e-07 1.952e-07
25- 50 5.886e-08 2.675e-08
50-150 5.873e-08 4.419e-08
15-150 5.588e-07 2.168e-07
Pre-slew spectrum (Pre-slew PHA with pre-slew DRM)
Power-law model
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 5.45953 ( -0.553288 0.594958 )
Norm@50keV : 1.08968E-04 ( -4.90393e-05 7.45003e-05 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 39.17 using 59 PHA bins.
# Reduced chi-squared = 0.6872 for 57 degrees of freedom
# Null hypothesis probability = 9.656689e-01
Photon flux (15-150 keV) in 64 sec: 0.262274 ( -0.0299982 0.030017 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.19788e-07 ( -5.99001e-08 6.02233e-08 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: 1.00000 ( )
Epeak [keV] : 50.0000 ( )
Norm@50keV : 2.20667E-03 ( )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 184.67 using 59 PHA bins.
# Reduced chi-squared = 3.2976 for 56 degrees of freedom
# Null hypothesis probability = 1.189319e-15
Photon flux (15-150 keV) in 64 sec: 0.259127 ( -0.03063 0.030496 ) ph/cm2/s
Energy fluence (15-150 keV) : 5.02732e-07 ( -6.04371e-08 6.08704e-08 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : 1.23580 ( -3.25893 -1.22247 )
beta : -5.98548 ( 5.98155 1.01795 )
Epeak [keV] : 9.18208 ( -9.11356 2.56094 )
Norm@50keV : 62.3922 ( -59.1443 69452.2 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 38.72 using 59 PHA bins.
# Reduced chi-squared = 0.7040 for 55 degrees of freedom
# Null hypothesis probability = 9.529075e-01
Photon flux (15-150 keV) in 64 sec: ( ) ph/cm2/s
Energy fluence (15-150 keV) : 0 ( 0 0 ) ergs/cm2
S(25-50 keV) vs. S(50-100 keV) plot
S(25-50 keV) = 8.07386e-08
S(50-100 keV) = 7.33952e-09
T90 vs. Hardness ratio plot
T90 = 64 sec.
Hardness ratio (energy fluence ratio) = 0.0909047
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 0.138963
Count Ratio (50-100 keV) / (15-25 keV) = 0.0430149
Mask shadow pattern
IMX = 2.448264145434451E-01, IMY = 3.661100833185482E-01
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 64.000000
Spacecraft aspect plot
Bright source in the pre-burst/pre-slew/post-slew images
Pre-burst image of 15-350 keV band
Time interval of the image:
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
0.000000 64.000000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
244.9423 -15.7242 0.6 23.8 -56.2 2.0413 20.3 5.5 Sco X-1
255.9619 -37.9918 8.1 12.5 -134.3 0.1269 1.4 8.9 4U 1700-377
256.4185 -36.5711 3.6 11.3 -130.3 0.2823 3.2 8.9 GX 349+2
263.1437 -24.7017 13.2 5.1 -30.3 0.0763 0.9 7.8 GX 1+4
264.7486 -44.5258 4.5 15.6 -171.1 0.2193 2.6 4.6 4U 1735-44
268.4029 -1.5240 5.8 27.5 8.9 0.1907 2.0 4.8 SW J1753.5-0127
270.2860 -25.0721 3.7 5.2 47.3 0.2879 3.1 0.4 GX 5-1
270.3737 -25.8449 6.7 4.7 54.1 0.1643 1.7 7.2 GRS 1758-258
273.8354 -13.9123 5.9 16.6 30.8 -0.1726 -1.9 12.4 GX 17+2
275.9007 -30.4540 5.3 8.4 107.1 0.1859 2.2 5.4 H1820-303
284.8924 -25.0217 7.0 16.9 85.4 0.1693 1.7 9.9 HT1900.1-2455
288.6768 10.9155 2.9 45.3 36.1 1.0628 4.0 7.4 GRS 1915+105
263.1498 -33.7710 5.5 5.5 -146.5 0.1875 2.1 8.9 GX 354-0
306.1762 -19.0389 2.8 37.5 88.3 1.2279 4.1 ------ UNKNOWN
239.2082 6.8368 2.5 44.3 -35.9 0.8234 4.7 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
502.200590 963.106600
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
284.9015 -24.8617 5.6 36.5 -111.8 -1.2296 -2.1 8.1 HT1900.1-2455
288.7966 10.9572 0.8 32.4 -45.9 6.6868 15.3 0.7 GRS 1915+105
299.5396 35.1984 3.2 43.7 -6.8 2.0490 3.7 2.5 Cyg X-1
308.0075 40.9642 3.4 47.0 4.7 2.0316 3.4 4.7 Cyg X-3
326.2223 38.3807 5.5 44.5 24.3 1.4047 2.1 4.3 Cyg X-2
357.3780 -2.7948 2.7 40.3 102.1 5.6643 4.2 229.9 UNKNOWN
358.4044 -8.8336 4.1 41.2 111.4 3.9049 2.8 538.5 UNKNOWN
336.4786 24.1039 3.2 35.0 46.1 1.9557 3.7 ------ UNKNOWN
297.3834 30.2126 1.1 40.2 -12.7 4.2615 10.4 ------ UNKNOWN
283.8879 -49.6703 2.6 52.4 -139.5 7.6409 4.5 ------ UNKNOWN
Plot creation:
Thu Oct 24 17:38:08 EDT 2013