batgrbproduct Analysis for Trigger=436737

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Fri Jan 17 15:29:34 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger436737
======================================================================

  Trigger: 00436737      Segment: 000

  BAT Trigger Time: 309310848   [s; MET]
      Trigger Stop: 309310912   [s; MET]
               UTC: 2010-10-20T23:40:41.709060    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 189.566423306271   Dec: 23.1609361221947  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    13.24
     Image Trigger?:     YES
     Rate S/N Ratio:     0  [ if not an image trigger ]
     Image S/N Ratio:    13.24

  Flight Position:   [ source = BAT ]
    RA: 189.566423306271   Dec: 23.1609361221947  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 189.576407827723   Dec: 23.18286537218  [deg; J2000]  
        { 12h 38m 18.3s , +23d 10' 58.3" }
         +/- 1.77243961034988 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.763091014324163 [arcmin] (formal 1-sigma fit error)
    SNR: 13.4281539841749
 
  Angular difference between Flight and Ground position is 1.426369 arcmin
 
  Partial Coding Fraction: 0.4296875    [ including projection effects ]

  Duration
     T90: 172.336000025272 +/- 29.2958033946059
        Measured from: -33.0479999780655
                   to: 139.288000047207     [s; relative to TRIGTIME]
     T50: 72.3360000252724 +/- 18.4150842352333
        Measured from: -2.05599999427795
                   to: 70.2800000309944     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: -15.3640000224113     
                   to: -14.3640000224113     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -43.7519999742508     
                   to: 164.871999979019     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     1.583107   1.894857   0.768568   0.230673
           0.132182   0.130562   0.118649   0.113421 [error]
 Peak      0.022940   0.018330   0.031594   0.011053
           0.009106   0.009058   0.007990   0.007430 [error]

     [ fluence units of on-axis counts / fully illuminated detector ] 

======================================================================
 
=== Fluence/Peak Flux Summary ===
 
              Model    Band1    Band2    Band3    Band4    Band5    Total      
                       15-25    25-50   50-100  100-350   15-150   15-350   keV
Fluence   Power-law 6.05e-07 7.85e-07 7.46e-07 1.26e-06 2.56e-06 3.39e-06   erg/cm2
              Error 7.75e-08 6.85e-08 1.16e-07 3.90e-07 2.63e-07 5.14e-07   erg/cm2
Peak flux Power-law 2.03e-01 2.00e-01 1.38e-01 1.49e-01 6.00e-01 6.90e-01   ph/cm2/s
              Error 1.34e-01 8.19e-02 6.68e-02 1.74e-01 2.33e-01 2.61e-01   ph/cm2/s
 
Fluence   Cutoff-PL 5.78e-07 8.26e-07 7.28e-07 5.58e-07 2.43e-06 2.69e-06   erg/cm2
              Error 8.85e-08 9.35e-08 1.32e-07 7.80e-07 3.19e-07 8.07e-07   erg/cm2
Peak flux Cutoff-PL 1.54e-01 2.06e-01 1.55e-01 8.16e-02 5.65e-01 6.02e-01   ph/cm2/s
              Error 1.72e-01 1.16e-01 7.86e-02 1.67e-01 2.94e-01 3.14e-01   ph/cm2/s
 
Fluence        Band -------- -------- -------- -------- -------- --------   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band 1.69e-01 2.05e-01 1.50e-01 8.51e-02 5.77e-01 6.18e-01   ph/cm2/s
              Error -------- -------- -------- -------- -------- --------   ph/cm2/s
 
=== Time-averaged spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.073    0.174    -      -           1.32e-03 1.47e-04   63.950 57
CPL   1.608    0.700      35.2   -4.2      2.44e-03 0.00e+00   62.760 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    1.539    0.731    -      -           4.76e-03 1.85e-03   50.820 57
CPL   0.641    1.407      89.6    0.0      1.16e-02 9.89e+01   50.580 56
 
Model      : spectral model: simple power-law (PL) and cutoff power-law (CPL)
Ph_index   : photon index: E^-{Ph_index} (minus sign is not included in the index)
Ph_90err   : 90% error of the photon index
Epeak      : Epeak in keV
Epeak_90err: 90% error of Epeak
Norm       : normalization at 50 keV in PL model and at 1 keV in CPL model
Nomr_90err : 90% error of the normalization
chi2       : Chi-Squared
dof        : degree of freedom
 
=== T90/T50 calculation in the 50-300 keV band (BATSE band) using 64 ms lc ===
 
T90 in the 50-300 keV band: 78.208000 sec.
T50 in the 50-300 keV band: 42.816000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100  208.624  -43.752  164.872
T90   172.336  -33.048  139.288
T50    72.336   -2.056   70.280
Peak    1.000  -15.364  -14.364
  • Click here for the BAT GCN circular template
  • Special notes of this burst

    Image

    Pre-slew 15.0-350.0 keV image (Event data)

    #   RAcent    DECcent   POSerr    Theta     Phi              Peak Cts       SNR   Name
      189.5764    23.1829   0.0144    39.1984   -41.9162         4.8532735     13.428 TRIG_00436737                 
     
    Foreground time interval of the image:
    -43.752 164.872 (delta_t = 208.624 [sec])
    Background time interval of the image:
    -239.000 -43.752 (delta_t = 195.248 [sec])
    

    Lightcurves

    Notes:

    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)

    Quad-rate summed light curves (from T0-300s to T0+1000s)

    Spectral Evolution

    Spectra

    Notes:

    Time averaged spectrum fit using the average DRM

    Power-law model
    Time interval is from  -43.752 sec. to  164.872 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 2.07327     ( -0.169607   0.177887 )
    Norm@50keV  : 1.32160E-03    ( -0.000148839   0.000145772 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          63.95 using 59 PHA bins.
    # Reduced chi-squared =          1.122 for     57 degrees of freedom 
    # Null hypothesis probability =   2.456834e-01
     
    Photon flux (15-150 keV)    in 208.6 sec: 0.205220 ( -0.0180093  0.0180267 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 2.55518e-06 ( -2.60233e-07  2.64887e-07 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from  -43.752 sec. to  164.872 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.60782     ( -0.871337   0.527704 )
    Epeak [keV] : 35.1529      ( -26.7851 -35.1532 )
    Norm@50keV  : 2.44341E-03    (     )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          62.76 using 59 PHA bins.
    # Reduced chi-squared =          1.121 for     56 degrees of freedom 
    # Null hypothesis probability =   2.492082e-01
     
    Photon flux (15-150 keV)    in 208.6 sec: 0.200568 ( -0.019422  0.019353 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 2.43109e-06 ( -3.13609e-07  3.24978e-07 ) ergs/cm2
     
    
    Band function
    Time interval is from  -43.752 sec. to  164.872 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : -1.60822   ( -5.49032   0.248125 )
    beta        : -10.00000    ( 10   4.44089e-14 )
    Epeak [keV] : 35.1424      ( -10.8975 -35.1424 )
    Norm@50keV   : 2.44159E-03    ( -0.000211307   0.00532749 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          62.76 using 59 PHA bins.
    # Reduced chi-squared =          1.141 for     55 degrees of freedom 
    # Null hypothesis probability =   2.205227e-01
     
    Photon flux (15-150 keV)    in 208.6 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]    : 9.69046  (-0.951385  1.06356)
    R^2/D10^2   : 0.104124  (-0.0348245   0.0521431)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          84.35 using 59 PHA bins.
    # Reduced chi-squared =          1.480 for     57 degrees of freedom 
    # Null hypothesis probability =   1.076580e-02
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  4.106e-07   5.903e-08
    25- 50  9.759e-07   1.081e-07
    50-150  4.647e-07   1.147e-07
    15-150  1.851e-06   1.837e-07
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 59.6918       (-14.0745      20.952)
    Norm        : 1.06528       (-0.157284     0.181466)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          63.10 using 59 PHA bins.
    # Reduced chi-squared =          1.107 for     57 degrees of freedom 
    # Null hypothesis probability =   2.696541e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  5.580e-07   6.529e-08
    25- 50  8.480e-07   8.417e-08
    50-150  9.607e-07   2.467e-07
    15-150  2.367e-06   2.940e-07
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 6.10185        (-3.44541      2.33156)
    R1^2/D10^2  : 0.441182        (-0.27093      14.812)
    kT2 [keV]   : 18.6900        (-7.74108      34.5457)
    R2^2/D10^2  : 5.26334E-03    (-0.00468813   0.0473969)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          65.98 using 59 PHA bins.
    # Reduced chi-squared =          1.200 for     55 degrees of freedom 
    # Null hypothesis probability =   1.475961e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  5.421e-07   1.979e-07
    25- 50  8.427e-07   3.220e-07
    50-150  9.696e-07   5.154e-07
    15-150  2.354e-06   9.282e-07
    

    Peak spectrum fit

    Power-law model
    Time interval is from  -15.364 sec. to  -14.364 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.53855     ( -0.688758   0.773291 )
    Norm@50keV  : 4.75629E-03    ( -0.00189251   0.00181738 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          50.82 using 59 PHA bins.
    # Reduced chi-squared =         0.8917 for     57 degrees of freedom 
    # Null hypothesis probability =   7.045838e-01
     
    Photon flux (15-150 keV)    in 1 sec: 0.600143 ( -0.231844  0.234234 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 4.48495e-08 ( -1.84556e-08  1.89228e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from  -15.364 sec. to  -14.364 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 0.640994     ( -0.612537   2.20172 )
    Epeak [keV] : 89.5833      ( -88.7148 -88.7148 )
    Norm@50keV  : 1.15956E-02    ( -0.0121657   197.837 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          50.58 using 59 PHA bins.
    # Reduced chi-squared =         0.9033 for     56 degrees of freedom 
    # Null hypothesis probability =   6.793429e-01
     
    Photon flux (15-150 keV)    in 1 sec: 0.565013 ( -0.329811  0.257816 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 4.38305e-08 ( -1.98539e-08  1.89181e-08 ) ergs/cm2
     
    
    Band function
    Time interval is from  -15.364 sec. to  -14.364 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : -0.782915   ( -2.99375   0.907525 )
    beta        : -10.0000    ( 10   1.95399e-14 )
    Epeak [keV] : 94.0765      ( -63.5065 -94.3452 )
    Norm@50keV   : 1.03029E-02    ( -0.0101976   2.16574 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          50.59 using 59 PHA bins.
    # Reduced chi-squared =         0.9199 for     55 degrees of freedom 
    # Null hypothesis probability =   6.435691e-01
     
    Photon flux (15-150 keV)    in 1 sec: 0.577393 (    ) 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]    : 18.7695  (-5.8923  9.55102)
    R^2/D10^2   : 3.25096E-02  (-0.0325088   0.0846256)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          50.77 using 59 PHA bins.
    # Reduced chi-squared =         0.8906 for     57 degrees of freedom 
    # Null hypothesis probability =   7.066128e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  2.261e-09   1.492e-09
    25- 50  1.078e-08   6.590e-09
    50-150  2.784e-08   1.828e-08
    15-150  4.089e-08   2.603e-08
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 199.363       (-199.363      -199.363)
    Norm        : 2.45341       (-0.916767     1.25763)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          50.73 using 59 PHA bins.
    # Reduced chi-squared =         0.8900 for     57 degrees of freedom 
    # Null hypothesis probability =   7.078756e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  6.109e-09   3.951e-09
    25- 50  1.175e-08   7.395e-09
    50-150  2.577e-08   1.639e-08
    15-150  4.363e-08   2.697e-08
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 2.47379        (-2.0885      3.47151)
    R1^2/D10^2  : 111.662        (-110.698      -111.254)
    kT2 [keV]   : 20.7773        (-6.55112      12.5643)
    R2^2/D10^2  : 2.15496E-02    (-0.017193   0.0563231)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          47.08 using 59 PHA bins.
    # Reduced chi-squared =         0.8559 for     55 degrees of freedom 
    # Null hypothesis probability =   7.675655e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  7.437e-09   3.979e-09
    25- 50  9.414e-09   5.605e-09
    50-150  2.898e-08   1.841e-08
    15-150  4.583e-08   2.493e-08
    

    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: 2.07327     ( -0.169607   0.177887 )
    Norm@50keV  : 1.32160E-03    ( -0.000148839   0.000145772 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          63.95 using 59 PHA bins.
    # Reduced chi-squared =          1.122 for     57 degrees of freedom 
    # Null hypothesis probability =   2.456834e-01
     
    Photon flux (15-150 keV)    in 208.6 sec: 0.205220 ( -0.0180093  0.0180267 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 2.55518e-06 ( -2.60233e-07  2.64887e-07 ) ergs/cm2
     
    
    Cutoff power-law model
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.60782     ( -0.871337   0.527704 )
    Epeak [keV] : 35.1529      ( -27.402 -35.1532 )
    Norm@50keV  : 2.44341E-03    (     )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          62.76 using 59 PHA bins.
    # Reduced chi-squared =          1.121 for     56 degrees of freedom 
    # Null hypothesis probability =   2.492082e-01
     
    Photon flux (15-150 keV)    in 208.6 sec: 0.200568 ( -0.019422  0.019353 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 2.43109e-06 ( -3.13609e-07  3.24978e-07 ) ergs/cm2
     
    
    Band function
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : -1.60822   ( -4.0233   0.223879 )
    beta        : -10.00000    ( 10   1.95399e-14 )
    Epeak [keV] : 35.1424      ( -10.8975 -35.1424 )
    Norm@50keV   : 2.44159E-03    ( -0.000211307   0.00532749 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          62.76 using 59 PHA bins.
    # Reduced chi-squared =          1.141 for     55 degrees of freedom 
    # Null hypothesis probability =   2.205227e-01
     
    Photon flux (15-150 keV)    in 208.6 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)  = 7.85e-07
    S(50-100 keV) = 7.46e-07
    

    T90 vs. Hardness ratio plot

    T90                                   = 172.336000025272 sec.
    Hardness ratio (energy fluence ratio) = 0.950318
    

    Color vs. Color plot

    Count Ratio  (25-50 keV) / (15-25 keV) = 1.19692
    Count Ratio (50-100 keV) / (15-25 keV) = 0.485481
    

    Mask shadow pattern

    IMX = 6.068572353274657E-01, IMY = 5.448124093499392E-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:
    -239.000000 -43.752000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    244.9718 -15.6404    0.5  47.4 -147.9  10.1508  23.9    0.4	Sco X-1                       
    254.2713  35.3170    8.4  18.5  116.6  -0.2705  -1.4    9.2	Her X-1                       
    268.2948  -1.5291    4.9  46.3  174.8   0.9400   2.4    6.3	SW J1753.5-0127               
    212.0767  61.0575    2.4  33.7   29.7   1.1771   4.8 ------	UNKNOWN                       
    216.0104   9.6604    3.2  26.0  -91.1   0.8463   3.6 ------	UNKNOWN                       
    212.7780  -6.1133    3.3  41.3 -100.7   3.1369   3.5 ------	UNKNOWN                       
    

    Pre-slew background subtracted image of 15-350 keV band

    Time interval of the image:
    -43.752000 164.872000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    244.8938 -15.6999    6.9  47.4 -147.8  -0.8939  -1.7    6.1	Sco X-1                       
    254.4173  35.4557    7.2  18.7  116.2  -0.4042  -1.6    7.1	Her X-1                       
    268.5208  -1.4857    8.1  46.4  174.6   0.6650   1.4    9.4	SW J1753.5-0127               
    262.6656 -21.4513    2.5  59.1 -164.6   6.2886   4.6 ------	UNKNOWN                       
    224.4250   6.0101    3.0  25.6 -112.1   1.0757   3.9 ------	UNKNOWN                       
    189.5764  23.1829    0.9  39.2  -41.9   4.8528  13.4 ------	UNKNOWN                       
    204.3943   0.0531    1.8  40.7  -84.9   5.4315   6.3 ------	UNKNOWN                       
    

    Post-slew image of 15-350 keV band

    Time interval of the image:
    372.500610 483.020000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    135.7110 -40.5819    5.0  58.3 -154.6 -10.3533  -2.3    8.5	Vela X-1                      
    170.5675 -60.6752    7.3  39.3 -124.3  -1.9890  -1.6    8.0	Cen X-3                       
    186.3094 -62.8853    6.6  36.6 -112.5   2.3100   1.7   11.8	GX 301-2                      
    264.6490 -44.3265    5.2  44.9  -39.0  -2.8806  -2.2    8.4	4U 1735-44                    
    276.0120 -30.3445    5.8  56.6  -23.7   5.7877   2.0    4.7	H1820-303                     
    303.7116 -26.9518    2.4  55.8    5.9  20.4629   4.9 ------	UNKNOWN                       
    303.4571 -43.9277    2.3  39.1    1.9   5.0689   5.0 ------	UNKNOWN                       
    159.6908 -50.7877    3.1  49.2 -133.1  11.6307   3.8 ------	UNKNOWN                       
    
    Plot creation:
    Sat May 30 23:39:01 EDT 2015