Estimated redshift from machine learning (Ukwatta et al. 2016) - may take a few minutes to calcaulte
Image
Pre-slew 15-350 keV image (Event data; bkg subtracted)
# RAcent DECcent POSerr Theta Phi Peak Cts SNR Name
297.8813 +39.0727 0.0392 13.1 58.3 0.0441 4.9 TRIG_00895503
------------------------------------------
Foreground time interval of the image:
0.000 0.512 (delta_t = 0.512 [sec])
Background time interval of the image:
-239.544 -67.694 (delta_t = 171.850 [sec])
-66.544 -45.644 (delta_t = 20.900 [sec])
-44.544 -4.544 (delta_t = 40.000 [sec])
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 0.512000
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 0.512000
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 0.512000
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 0.512 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -9.48285E-03 ( -0.831409 0.699561 )
Norm@50keV : 3.71142E-03 ( -0.00371142 0.00215732 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 41.44 using 59 PHA bins.
# Reduced chi-squared = 0.7270 for 57 degrees of freedom
# Null hypothesis probability = 9.396958e-01
Photon flux (15-150 keV) in 0.512 sec: 0.502760 ( -0.183176 0.196662 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.41053e-08 ( -1.00317e-08 1.00337e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 0.512 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -1.68087E-02 ( 0.0177616 0.699694 )
Epeak [keV] : 9999.36 ( -9999.36 -9999.36 )
Norm@50keV : 3.75939E-03 ( -0.00136468 0.0598407 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 41.44 using 59 PHA bins.
# Reduced chi-squared = 0.7400 for 56 degrees of freedom
# Null hypothesis probability = 9.268393e-01
Photon flux (15-150 keV) in 0.512 sec: 0.503178 ( -0.181904 0.195437 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.41345e-08 ( -1.0025e-08 1.00242e-08 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 0.512 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.375233 ( 0.375445 0.375445 )
beta : 9.40393E-03 ( -0.698848 -0.00936119 )
Epeak [keV] : 17.5512 ( -17.5486 -17.5486 )
Norm@50keV : 5.84851E-03 ( -0.00373349 19891.9 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 41.44 using 59 PHA bins.
# Reduced chi-squared = 0.7534 for 55 degrees of freedom
# Null hypothesis probability = 9.119353e-01
Photon flux (15-150 keV) in 0.512 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] : 57.6825 (-27.9447 -57.745)
R^2/D10^2 : 1.82134E-03 (-0.00181633 0.0077285)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 41.75 using 59 PHA bins.
# Reduced chi-squared = 0.7325 for 57 degrees of freedom
# Null hypothesis probability = 9.351996e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.024e-10 1.832e-10
25- 50 2.252e-09 1.317e-09
50-150 3.132e-08 1.736e-08
15-150 3.388e-08 1.917e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-74.1875 -200)
Norm : 2.11504 (-0.880401 0.880401)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.17 using 59 PHA bins.
# Reduced chi-squared = 1.003 for 57 degrees of freedom
# Null hypothesis probability = 4.686304e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.696e-09 1.771e-09
25- 50 5.186e-09 3.241e-09
50-150 1.137e-08 7.457e-09
15-150 1.925e-08 1.257e-08
Double BB
R1^2/D10^2 : 1.86498E-04 (-0.000185778 0.00813194)
kT2 [keV] : 19.7062 (-19.6347 -19.6347)
R2^2/D10^2 : 1.08686E-02 (-0.0110352 1.81793)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 41.75 using 59 PHA bins.
#Fit statistic : Chi-Squared = 41.34 using 59 PHA bins.
#Fit statistic : Chi-Squared = 41.25 using 59 PHA bins.
# Reduced chi-squared = 0.7592 for 55 degrees of freedom
# Reduced chi-squared = 0.7517 for 55 degrees of freedom
# Reduced chi-squared = 0.7501 for 55 degrees of freedom
# Null hypothesis probability = 9.059906e-01
# Null hypothesis probability = 9.136728e-01
# Null hypothesis probability = 9.153095e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 0.000e+00 0.000e+00
25- 50 0.000e+00 0.000e+00
50-150 0.000e+00 0.000e+00
15-150 0.000e+00 0.000e+00
Peak spectrum fit
Power-law model
Time interval is from 0.000 sec. to 0.512 sec.
Spectral model in power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -9.48285E-03 ( -0.831409 0.699561 )
Norm@50keV : 3.71142E-03 ( -0.00371142 0.00215732 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 41.44 using 59 PHA bins.
# Reduced chi-squared = 0.7270 for 57 degrees of freedom
# Null hypothesis probability = 9.396958e-01
Photon flux (15-150 keV) in 0.512 sec: 0.502760 ( -0.183176 0.196662 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.41053e-08 ( -1.00317e-08 1.00337e-08 ) ergs/cm2
Cutoff power-law model
Time interval is from 0.000 sec. to 0.512 sec.
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -1.68087E-02 ( 0.0177616 0.699694 )
Epeak [keV] : 9999.36 ( -9999.36 -9999.36 )
Norm@50keV : 3.75939E-03 ( -0.00136468 0.0598407 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 41.44 using 59 PHA bins.
# Reduced chi-squared = 0.7400 for 56 degrees of freedom
# Null hypothesis probability = 9.268393e-01
Photon flux (15-150 keV) in 0.512 sec: 0.503178 ( -0.181904 0.195437 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.41345e-08 ( -1.0025e-08 1.00242e-08 ) ergs/cm2
Band function
Time interval is from 0.000 sec. to 0.512 sec.
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.375233 ( 0.375445 0.375445 )
beta : 9.40393E-03 ( -0.698848 -0.00936119 )
Epeak [keV] : 17.5512 ( -17.5486 -17.5486 )
Norm@50keV : 5.84851E-03 ( -0.00373349 19891.9 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 41.44 using 59 PHA bins.
# Reduced chi-squared = 0.7534 for 55 degrees of freedom
# Null hypothesis probability = 9.119353e-01
Photon flux (15-150 keV) in 0.512 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] : 57.6825 (-27.9447 -57.745)
R^2/D10^2 : 1.82134E-03 (-0.00181633 0.0077285)
(R is the radius in km and D10 is the distance to the source in units of 10 kpc)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 41.75 using 59 PHA bins.
# Reduced chi-squared = 0.7325 for 57 degrees of freedom
# Null hypothesis probability = 9.351996e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 3.024e-10 1.791e-10
25- 50 2.252e-09 1.284e-09
50-150 3.132e-08 1.745e-08
15-150 3.388e-08 1.910e-08
Thermal bremsstrahlung (OTTB)
Spectral model: thermal bremsstrahlung
------------------------------------------------------------
Parameters : value Lower 90% Upper 90%
kT [keV] : 200.000 (-74.1875 -200)
Norm : 2.11504 (-0.880401 0.880401)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 57.17 using 59 PHA bins.
# Reduced chi-squared = 1.003 for 57 degrees of freedom
# Null hypothesis probability = 4.686304e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 2.696e-09 1.800e-09
25- 50 5.186e-09 3.325e-09
50-150 1.137e-08 7.311e-09
15-150 1.925e-08 1.250e-08
Double BB
R1^2/D10^2 : 1.86498E-04 (-0.000185778 0.00813194)
kT2 [keV] : 19.7062 (-19.6347 -19.6347)
R2^2/D10^2 : 1.08686E-02 (-0.0110352 1.79634)
------------------------------------------------------------
#Fit statistic : Chi-Squared = 41.75 using 59 PHA bins.
#Fit statistic : Chi-Squared = 41.34 using 59 PHA bins.
#Fit statistic : Chi-Squared = 41.25 using 59 PHA bins.
# Reduced chi-squared = 0.7592 for 55 degrees of freedom
# Reduced chi-squared = 0.7517 for 55 degrees of freedom
# Reduced chi-squared = 0.7501 for 55 degrees of freedom
# Null hypothesis probability = 9.059906e-01
# Null hypothesis probability = 9.136728e-01
# Null hypothesis probability = 9.153095e-01
Energy Fluence 90% Error
[keV] [erg/cm2] [erg/cm2]
15- 25 0.000e+00 0.000e+00
25- 50 0.000e+00 0.000e+00
50-150 0.000e+00 0.000e+00
15-150 0.000e+00 0.000e+00
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: -9.48285E-03 ( -0.831409 0.699561 )
Norm@50keV : 3.71142E-03 ( -0.00371142 0.00215732 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 41.44 using 59 PHA bins.
# Reduced chi-squared = 0.7270 for 57 degrees of freedom
# Null hypothesis probability = 9.396958e-01
Photon flux (15-150 keV) in 0.512 sec: 0.502760 ( -0.183176 0.196662 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.41053e-08 ( -1.00317e-08 1.00337e-08 ) ergs/cm2
Cutoff power-law model
Spectral model in the cutoff power-law:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
Photon index: -1.68087E-02 ( 0.0177616 0.699694 )
Epeak [keV] : 9999.36 ( -9999.36 -9999.36 )
Norm@50keV : 3.75939E-03 ( -0.00136468 0.0598407 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 41.44 using 59 PHA bins.
# Reduced chi-squared = 0.7400 for 56 degrees of freedom
# Null hypothesis probability = 9.268393e-01
Photon flux (15-150 keV) in 0.512 sec: 0.503178 ( -0.181904 0.195437 ) ph/cm2/s
Energy fluence (15-150 keV) : 3.41345e-08 ( -1.0025e-08 1.00242e-08 ) ergs/cm2
Band function
Spectral model in the Band function:
------------------------------------------------------------
Parameters : value lower 90% higher 90%
alpha : -0.375233 ( 0.375445 0.375445 )
beta : 9.40393E-03 ( -0.698848 -0.00936119 )
Epeak [keV] : 17.5512 ( -17.5486 -17.5486 )
Norm@50keV : 5.84851E-03 ( -0.00373349 19891.9 )
------------------------------------------------------------
#Fit statistic : Chi-Squared = 41.44 using 59 PHA bins.
# Reduced chi-squared = 0.7534 for 55 degrees of freedom
# Null hypothesis probability = 9.119353e-01
Photon flux (15-150 keV) in 0.512 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) = 2.85e-09
S(50-100 keV) = 1.15e-08
T90 vs. Hardness ratio plot
T90 = 0.51199996471405 sec.
Hardness ratio (energy fluence ratio) = 4.03509
Color vs. Color plot
Count Ratio (25-50 keV) / (15-25 keV) = 4.72358
Count Ratio (50-100 keV) / (15-25 keV) = 12.6829
Mask shadow pattern
IMX = 1.219074589985890E-01, IMY = -1.972500039793344E-01
TIME vs. PHA plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.512000
TIME vs. DetID plot around the trigger time
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.512000
100 us light curve (15-350 keV)
Blue+Cyan dotted lines: Time interval of the scaled map
From 0.000000 to 0.512000
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:
-239.544000 -67.694000
-66.544000 -45.644000
-44.544000 -4.544000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
288.7687 10.9420 3.3 38.3 18.4 1.3277 3.5 1.8 GRS 1915+105
299.5804 35.2059 0.4 13.5 40.5 7.0728 30.0 0.5 Cyg X-1
307.9351 41.0218 35.9 5.1 58.6 0.0760 0.3 9.0 Cyg X-3
326.1301 38.3066 384.6 9.4 -97.8 0.0071 0.0 2.2 Cyg X-2
314.6938 41.7495 1.1 0.0 163.1 2.4446 10.7 ------ UNKNOWN
329.0259 34.7598 2.6 13.2 -88.2 1.0179 4.4 ------ UNKNOWN
353.7520 17.9116 3.1 40.9 -91.8 4.2713 3.7 ------ UNKNOWN
Pre-slew background subtracted image of 15-350 keV band
Time interval of the image:
0.000000 0.512000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
288.6920 11.0652 3.7 38.2 18.6 -0.0486 -3.1 9.5 GRS 1915+105
299.6644 35.2409 3.4 13.4 40.4 -0.0311 -3.4 4.3 Cyg X-1
307.9454 41.0467 13.4 5.1 58.9 0.0079 0.9 9.4 Cyg X-3
325.9093 38.2786 0.0 9.3 -97.2 0.0159 1.8 12.6 Cyg X-2
297.8814 39.0726 2.4 13.1 58.3 0.0440 4.9 ------ UNKNOWN
60.3165 65.8443 2.6 58.3 -177.9 0.2824 4.5 ------ UNKNOWN
7.0475 53.6081 3.0 36.3 -152.9 0.0444 3.9 ------ UNKNOWN
327.6904 15.3957 2.2 28.6 -52.4 0.0584 5.2 ------ UNKNOWN
315.0834 -9.7326 2.0 51.5 -26.0 0.1384 5.9 ------ UNKNOWN
14.7341 33.7976 2.2 47.2 -126.4 0.1714 5.2 ------ UNKNOWN
Post-slew image of 15-350 keV band
Time interval of the image:
50.156590 662.596000
720.456000 930.886000
# RAcent DECcent POSerr Theta Phi PeakCts SNR AngSep Name
# [deg] [deg] ['] [deg] [deg] [']
254.6601 35.2576 5.2 34.3 86.0 -3.3369 -2.2 11.1 Her X-1
268.3053 -1.2998 7.3 48.6 29.6 -3.3301 -1.6 9.9 SW J1753.5-0127
288.8060 10.9485 1.6 29.2 6.9 5.1545 7.1 0.5 GRS 1915+105
299.5802 35.2072 0.3 4.1 -31.8 24.1635 36.0 0.6 Cyg X-1
308.3519 41.0300 6.0 8.3 -118.6 -1.1261 -1.9 11.9 Cyg X-3
326.2806 38.3617 4.2 22.1 -108.7 2.0366 2.8 5.7 Cyg X-2
257.3632 18.9439 2.5 40.3 60.4 11.0696 4.6 ------ UNKNOWN
300.7199 23.0502 2.7 16.2 -21.0 2.6045 4.3 ------ UNKNOWN
314.6404 41.7603 1.0 13.0 -118.8 7.6969 11.8 ------ UNKNOWN
353.8537 41.6448 3.1 42.0 -123.7 6.0900 3.7 ------ UNKNOWN
Plot creation:
Thu Mar 28 17:18:44 EDT 2019