batgrbproduct Analysis for Trigger=432420

Analysis Summary

Notes:

======================================================================
                  BAT GRB EVENT DATA PROCESSING REPORT
    Process Script Ver: batgrbproduct v2.46
    Process Start Time (local time): Fri Jan 17 16:32:58 EST 2014
             Host Name: batevent1
   Current Working Dir: /local/data/batevent/batevent_reproc/trigger432420
======================================================================

  Trigger: 00432420      Segment: 000

  BAT Trigger Time: 304277141.824   [s; MET]
      Trigger Stop: 304277142.848   [s; MET]
               UTC: 2010-08-23T17:25:35.715620    [includes UTCF correction] 
       Where From?: TDRSS position message

  BAT 
    RA: 20.7032249785858   Dec: 5.8420131400694  [deg; J2000]

     Catalogged Source?: NO
     Point Source?:      YES
     GRB Indicated?:     YES    [ by BAT flight software ]
     Image S/N Ratio:    10.5
     Image Trigger?:     NO
     Rate S/N Ratio:     15.8429795177549  [ if not an image trigger ]
     Image S/N Ratio:    10.5

  Flight Position:   [ source = BAT ]
    RA: 20.7032249785858   Dec: 5.8420131400694  [deg; J2000]

  Ground Position:   [ source = BAT pre-slew burst ]
    RA: 20.7047693351404   Dec: 5.84732433240791  [deg; J2000]  
        { 01h 22m 49.1s , +05d 50' 50.4" }
         +/- 1.41283374432378 [arcmin] (estimated 90% radius based on SNR)
         +/- 0.465102322787318 [arcmin] (formal 1-sigma fit error)
    SNR: 18.5653260677926
 
  Angular difference between Flight and Ground position is 0.331736 arcmin
 
  Partial Coding Fraction: 0.9296875    [ including projection effects ]

  Duration
     T90: 17.7359999418259 +/- 3.10168209249592
        Measured from: -0.452000021934509
                   to: 17.2839999198914     [s; relative to TRIGTIME]
     T50: 7.95199990272522 +/- 1.62941585249702
        Measured from: 1.18800002336502
                   to: 9.13999992609024     [s; relative to TRIGTIME]



  Fluence
     Peak Flux  (peak 1 second)
        Measured from: 0.139999985694885     
                   to: 1.13999998569489     [s; relative to TRIGTIME]
     Total Fluence        
        Measured from: -1.17199999094009     
                   to: 19.4120000004768     [s; relative to TRIGTIME]
     
             Band 1     Band 2     Band 3     Band 4
              15-25      25-50     50-100    100-350     keV
 Total     0.347463   0.300562   0.138145   0.043036
           0.023390   0.023966   0.020872   0.018419 [error]
 Peak      0.047644   0.041763   0.017171   0.009010
           0.005530   0.005631   0.004836   0.003947 [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 1.05e-07 1.29e-07 1.15e-07 1.77e-07 4.11e-07 5.27e-07   erg/cm2
              Error 1.25e-08 1.15e-08 1.94e-08 5.78e-08 4.38e-08 8.06e-08   erg/cm2
Peak flux Power-law 4.58e-01 3.17e-01 1.44e-01 9.11e-02 9.63e-01 1.01e+00   ph/cm2/s
              Error 8.82e-02 4.62e-02 3.95e-02 4.68e-02 1.36e-01 1.46e-01   ph/cm2/s
 
Fluence   Cutoff-PL 1.03e-07 1.35e-07 1.11e-07 8.76e-08 3.94e-07 4.36e-07   erg/cm2
              Error 1.34e-08 1.55e-08 2.31e-08 9.87e-08 5.39e-08 1.25e-07   erg/cm2
Peak flux Cutoff-PL 4.59e-01 3.17e-01 1.43e-01 8.92e-02 9.63e-01 1.01e+00   ph/cm2/s
              Error 8.82e-02 5.23e-02 4.05e-02 7.22e-02 1.36e-01 1.19e-01   ph/cm2/s
 
Fluence        Band 1.03e-07 1.34e-07 1.08e-07 1.44e-07 3.99e-07 4.90e-07   erg/cm2
              Error -------- -------- -------- -------- -------- --------   erg/cm2
Peak flux      Band -------- -------- -------- -------- -------- --------   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    2.168    0.176    -      -           2.14e-03 2.58e-04   54.350 57
CPL   1.822    0.626      19.9   -0.2      3.46e-03 4.91e-03   53.640 56
 
 
=== 1-s peak spectral analysis ===
 
Model Ph_index Ph_90err Epeak  Epeak_90err Norm     Nomr_90err chi2   dof
PL    2.138    0.292    -      -           6.01e-03 1.24e-03   59.750 57
CPL   2.205    0.000     123.2    0.0      5.48e-03 0.00e+00   59.730 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: 7.808000 sec.
T50 in the 50-300 keV band: 4.352000 sec.
 
=== Table of the duration information ==
 
        Value   tstart    tstop
T100   20.584   -1.172   19.412
T90    17.736   -0.452   17.284
T50     7.952    1.188    9.140
Peak    1.000    0.140    1.140
  • 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
       20.7048     5.8473   0.0104    23.9756  -174.5894         0.6624661     18.565 TRIG_00432420                 
     
    Foreground time interval of the image:
     -1.172  10.877 (delta_t =  12.049 [sec])
    Background time interval of the image:
    -371.523 -324.793 (delta_t =  46.731 [sec])
    -239.824  -1.172 (delta_t = 238.652 [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 1.024000
    

    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 1.024000
    

    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 1.024000
    

    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)

    The mask-weighted light curves based on cleaned DPHs

    Spectral Evolution

    Spectra

    Notes:

    Time averaged spectrum fit using the average DRM

    Power-law model
    Time interval is from   -1.172 sec. to   19.412 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 2.16843     ( -0.171717   0.181097 )
    Norm@50keV  : 2.13507E-03    ( -0.000260766   0.000255937 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          54.35 using 59 PHA bins.
    # Reduced chi-squared =         0.9535 for     57 degrees of freedom 
    # Null hypothesis probability =   5.751408e-01
     
    Photon flux (15-150 keV)    in 20.58 sec: 0.347705 ( -0.0298872  0.0298915 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 4.11384e-07 ( -4.32725e-08  4.42719e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from   -1.172 sec. to   19.412 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.82214     ( -0.8289   0.422199 )
    Epeak [keV] : 19.8890      ( -19.4279 -19.8964 )
    Norm@50keV  : 3.45898E-03    ( -0.0022002   0.00761791 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          53.64 using 59 PHA bins.
    # Reduced chi-squared =         0.9578 for     56 degrees of freedom 
    # Null hypothesis probability =   5.648808e-01
     
    Photon flux (15-150 keV)    in 20.58 sec: 0.342622 ( -0.031419  0.03145 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 3.93979e-07 ( -5.29976e-08  5.47613e-08 ) ergs/cm2
     
    
    Band function
    Time interval is from   -1.172 sec. to   19.412 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : -1.82304   ( -3.26145   0.110489 )
    beta        : -10.00000    ( 10   1.65201e-13 )
    Epeak [keV] : 19.8547      ( -7.4567 20.7114 )
    Norm@50keV   : 3.45284E-03    ( -0.000295962   0.00762862 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          53.64 using 59 PHA bins.
    # Reduced chi-squared =         0.9752 for     55 degrees of freedom 
    # Null hypothesis probability =   5.268783e-01
     
    Photon flux (15-150 keV)    in 20.58 sec:  (    ) ph/cm2/s
    Energy fluence (15-150 keV)             : 3.99291e-07 ( 0  0 ) ergs/cm2
     
    
    Single BB
     
    Spectral model blackbody:
    ------------------------------------------------------------
    Parameters  : value    Lower 90%  Upper 90%
    kT [keV]    : 8.41669  (-0.867438  0.97356)
    R^2/D10^2   : 0.304343  (-0.107495   0.166677)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          79.57 using 59 PHA bins.
    # Reduced chi-squared =          1.396 for     57 degrees of freedom 
    # Null hypothesis probability =   2.580780e-02
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  8.310e-08   1.168e-08
    25- 50  1.585e-07   1.620e-08
    50-150  4.907e-08   1.386e-08
    15-150  2.907e-07   3.005e-08
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 48.7815       (-10.9077      16.2288)
    Norm        : 1.98131       (-0.297536     0.38136)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          54.67 using 59 PHA bins.
    # Reduced chi-squared =         0.9591 for     57 degrees of freedom 
    # Null hypothesis probability =   5.630181e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  9.913e-08   1.173e-08
    25- 50  1.411e-07   1.309e-08
    50-150  1.338e-07   3.355e-08
    15-150  3.740e-07   4.353e-08
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 5.42716        (-1.1838      1.28146)
    R1^2/D10^2  : 1.32556        (-0.704942      2.05783)
    kT2 [keV]   : 18.3723        (-5.12476      11.7415)
    R2^2/D10^2  : 9.23195E-03    (-0.0077544   0.0273807)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          52.85 using 59 PHA bins.
    # Reduced chi-squared =         0.9609 for     55 degrees of freedom 
    # Null hypothesis probability =   5.572086e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.038e-07   3.013e-08
    25- 50  1.323e-07   4.645e-08
    50-150  1.518e-07   8.294e-08
    15-150  3.879e-07   1.245e-07
    

    Peak spectrum fit

    Power-law model
    Time interval is from    0.140 sec. to    1.140 sec.
     
    Spectral model in power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 2.13831     ( -0.277482   0.307512 )
    Norm@50keV  : 6.00716E-03    ( -0.00125836   0.00121217 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          59.75 using 59 PHA bins.
    # Reduced chi-squared =          1.048 for     57 degrees of freedom 
    # Null hypothesis probability =   3.762125e-01
     
    Photon flux (15-150 keV)    in 1 sec: 0.963350 ( -0.135865  0.135868 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 5.60383e-08 ( -1.00541e-08  1.04292e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Time interval is from    0.140 sec. to    1.140 sec.
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 2.20452     ( -1.99174   -1.99174 )
    Epeak [keV] : 123.185      (   )
    Norm@50keV  : 5.47900E-03    (     )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          59.73 using 59 PHA bins.
    # Reduced chi-squared =          1.067 for     56 degrees of freedom 
    # Null hypothesis probability =   3.418430e-01
     
    Photon flux (15-150 keV)    in 1 sec: 0.963035 ( -0.135867  0.135815 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 5.59274e-08 ( -1.13041e-08  1.05353e-08 ) ergs/cm2
     
    
    Band function
    Time interval is from    0.140 sec. to    1.140 sec.
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : 4.81326   ( -4.81326   -4.81326 )
    beta        : -2.27722    ( -0.428879   0.337006 )
    Epeak [keV] : 20.8193      ( -20.8193 4.42746 )
    Norm@50keV   : 2664.62    ( -374.735   1.18152e+07 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          59.05 using 59 PHA bins.
    # Reduced chi-squared =          1.074 for     55 degrees of freedom 
    # Null hypothesis probability =   3.300118e-01
     
    Photon flux (15-150 keV)    in 1 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]    : 8.01324  (-1.52412  1.8392)
    R^2/D10^2   : 1.01844  (-0.562382   1.34228)
    (R is the radius in km and D10 is the distance to the source in units of 10 kpc)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          74.75 using 59 PHA bins.
    # Reduced chi-squared =          1.311 for     57 degrees of freedom 
    # Null hypothesis probability =   5.741218e-02
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.184e-08   3.232e-09
    25- 50  2.078e-08   4.730e-09
    50-150  5.487e-09   2.556e-09
    15-150  3.811e-08   8.370e-09
    
    Thermal bremsstrahlung (OTTB)
     
     
    Spectral model: thermal bremsstrahlung
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT [keV]    : 51.7730       (-18.5736      36.2415)
    Norm        : 5.33599       (-1.23576     1.8338)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          61.55 using 59 PHA bins.
    # Reduced chi-squared =          1.080 for     57 degrees of freedom 
    # Null hypothesis probability =   3.165132e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.315e-08   2.390e-09
    25- 50  1.912e-08   3.985e-09
    50-150  1.917e-08   8.122e-09
    15-150  5.144e-08   1.075e-08
    
    Double BB
     
     
    Spectral model: bbodyrad<1> + bbodyrad<2>
    ------------------------------------------------------------
    Parameters  : value         Lower 90%    Upper 90%
    kT1 [keV]   : 4.90514        (-1.31615      1.7246)
    R1^2/D10^2  : 5.85879        (-4.02828      15.9364)
    kT2 [keV]   : 20.1891        (-7.48514      21.99)
    R2^2/D10^2  : 2.03283E-02    (-0.0185241   0.0679733)
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          59.00 using 59 PHA bins.
    # Reduced chi-squared =          1.073 for     55 degrees of freedom 
    # Null hypothesis probability =   3.316682e-01
     
    Energy  Fluence     90% Error
    [keV]   [erg/cm2]   [erg/cm2]
    15- 25  1.478e-08   7.435e-09
    25- 50  1.619e-08   8.635e-09
    50-150  2.444e-08   1.477e-08
    15-150  5.540e-08   2.915e-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: 2.16558     ( -0.1597   0.167703 )
    Norm@50keV  : 3.03887E-03    ( -0.000344944   0.000339268 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          46.14 using 59 PHA bins.
    # Reduced chi-squared =         0.8095 for     57 degrees of freedom 
    # Null hypothesis probability =   8.475839e-01
     
    Photon flux (15-150 keV)    in 12.05 sec: 0.494167 ( -0.0402201  0.0402268 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 3.42715e-07 ( -3.37277e-08  3.44272e-08 ) ergs/cm2
     
    
    Cutoff power-law model
    Spectral model in the cutoff power-law:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    Photon index: 1.63896     ( -0.767832   0.422606 )
    Epeak [keV] : 26.7045      (   )
    Norm@50keV  : 6.30544E-03    (     )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          44.15 using 59 PHA bins.
    # Reduced chi-squared =         0.7885 for     56 degrees of freedom 
    # Null hypothesis probability =   8.739818e-01
     
    Photon flux (15-150 keV)    in 12.05 sec: 0.483714 ( -0.04196  0.041551 ) ph/cm2/s
    Energy fluence (15-150 keV)             : 3.22499e-07 ( -3.93348e-08  4.15592e-08 ) ergs/cm2
     
    
    Band function
     
    Spectral model in the Band function:
    ------------------------------------------------------------
    Parameters  : value       lower 90%   higher 90%
    alpha       : -1.63996   ( 1.71233   0.388436 )
    beta        : -10.0000    ( 10   20 )
    Epeak [keV] : 26.7124      ( -10.8003 13.2145 )
    Norm@50keV   : 6.29149E-03    ( -0.002856   0.0121732 )
    ------------------------------------------------------------
    #Fit statistic : Chi-Squared =          44.15 using 59 PHA bins.
    # Reduced chi-squared =         0.8028 for     55 degrees of freedom 
    # Null hypothesis probability =   8.523135e-01
     
    Photon flux (15-150 keV)    in 12.05 sec: 0.485282 (    ) ph/cm2/s
    Energy fluence (15-150 keV)             : 3.31482e-07 ( -3.31398e-07  -3.56764e-08 ) ergs/cm2
     
    

    S(25-50 keV) vs. S(50-100 keV) plot

    S(25-50 keV)  = 1.29e-07
    S(50-100 keV) = 1.15e-07
    

    T90 vs. Hardness ratio plot

    T90                                   = 17.7359999418259 sec.
    Hardness ratio (energy fluence ratio) = 0.891473
    

    Color vs. Color plot

    Count Ratio  (25-50 keV) / (15-25 keV) = 0.865019
    Count Ratio (50-100 keV) / (15-25 keV) = 0.397582
    

    Mask shadow pattern

    IMX = -4.427365595017845E-01, IMY = 4.193319806749431E-02
    

    TIME vs. PHA plot around the trigger time

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 1.024000
    

    TIME vs. DetID plot around the trigger time

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 1.024000
    

    100 us light curve (15-350 keV)

    Blue+Cyan dotted lines: Time interval of the scaled map
    From 0.000000 to 1.024000
    

    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:
    -371.523400 -324.792700
    -239.824000 -1.172000
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    358.3073  -7.8609    3.0  25.8  120.3   0.9429   3.8  482.4	UNKNOWN                       
      5.9271  33.9219    3.0  54.4  173.0   3.2434   3.9 ------	UNKNOWN                       
     36.5532 -72.8597    2.6  55.4    5.2   3.9489   4.4 ------	UNKNOWN                       
     40.3658 -58.4445    2.9  42.4   -3.6   1.1347   4.0 ------	UNKNOWN                       
     36.0347 -51.2220    3.0  34.8   -4.6   0.8715   3.8 ------	UNKNOWN                       
     55.5336 -56.5210    2.4  45.7  -14.7   1.5182   4.9 ------	UNKNOWN                       
    

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

    Time interval of the image:
    -1.172000 10.876600
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
     20.7048   5.8473    0.6  24.0 -174.6   0.6624  18.6 ------	UNKNOWN                       
     69.4656 -40.4824    2.2  45.9  -40.5   0.3933   5.2 ------	UNKNOWN                       
     47.3802  28.6389    2.8  52.5 -142.3   0.6665   4.1 ------	UNKNOWN                       
    

    Post-slew image of 15-350 keV band

    Time interval of the image:
    58.076600 894.676600
     
    # RAcent  DECcent POSerr Theta    Phi  PeakCts   SNR AngSep     Name
    #  [deg]    [deg]    ['] [deg]  [deg]                   [']
    346.6945  -5.2013    3.0  35.7   92.6   3.6385   3.9 ------	UNKNOWN                       
     33.4360 -19.3554    3.0  28.1   -6.2   1.5051   3.8 ------	UNKNOWN                       
     56.5132 -34.9183    2.7  52.9  -17.0   3.9201   4.2 ------	UNKNOWN                       
    
    Plot creation:
    Sun May 31 00:02:40 EDT 2015