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Home directory: /u/st/ariel/cassa2FGL

The galactic diffuse model used: ring_2year_P76_v0.fits

The isotropic spectra models used: isotrop_2year_P76_source_v0.txt (For front and back events), isotrop_2year_P76_source_v0_front.txt (For front only events), isotrop_2year_P76_source_v0_back.txt (For back only events)

Catalog used: gll_psc_v04.fit

Instrument response function: P7SOURCE_V6

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SEDs

1st half of time window
MET
Start = 239557417 seconds (2008-08-04T15:43:37)
Stop = 284206459 seconds (2010-01-03T10:14:19)

2nd half of time window
MET
Start = 284206459 seconds (2010-01-03T10:14:19)
Stop = 328855431 seconds (2011-06-04T04:43:49)

Full time window
MET
Start = 239557417 seconds (2008-08-04T15:43:37)
Stop = 328855431 seconds (2011-06-04T04:43:49)

Front only events


Norm      : 1.37e-13
Index     : 2.15
beta      : 0.0935
E_break   : 6.78e+03
Ph. Flux  : 3.68e-08 (DERIVED)
En. Flux  : 5.77e-11 (DERIVED)
TS: 237.1


Norm      : 4.51e-10
Index     : 1.75
beta      : 0.0394
E_break   : 98.9
Ph. Flux  : 5.28e-08 (DERIVED)
En. Flux  : 7.58e-11 (DERIVED)
TS: 264.5


Norm      : 5.83e-12   
Index     : 1          
beta      : 0.237      
E_break   : 659        
Ph. Flux  :  1.26e-08   (DERIVED)
En. Flux  : 4.2e-11    (DERIVED)
TS: 508.4

Back only events


Norm      : 1.15e-07
Index     : 2.19
beta      : 1.21e-08
E_break   : 12.6
Ph. Flux  : 1.05e-07 (DERIVED)
En. Flux  : 1.08e-10 (DERIVED)
TS: 116.2


Norm      : 9.31e-26
Index     : 2.19
beta      : 1.16e-09
E_break   : 2.14e+09
Ph. Flux  : 9.15e-08 (DERIVED)
En. Flux  : 9.11e-11 (DERIVED)
TS: 94.629082599


Norm      : 9.13e-11   (Failed fit)
Index     : 1.16       
beta      : 0.16       
E_break   : 163        (Failed fit)
Ph. Flux  : 3.43e-08   (DERIVED)
En. Flux  :  4.99e-11   (DERIVED)
TS: 116213.2

Front and back events


Norm      : 3.29e-11
Index     : 1.65
beta      : 0.0904
E_break   : 378
Ph. Flux  : 3.96e-08 (DERIVED)
En. Flux  : 5.75e-11 (DERIVED)
TS: 330.2


Norm      : 4.02e-14
Index     : 2.14
beta      : 0.0285
E_break   : 1.15e+04
Ph. Flux  : 5.83e-08 (DERIVED)
En. Flux  : 7.51e-11 (DERIVED)
TS: 358.6


Norm      : 2.26e-12   
Index     : 1.53       
beta      : 0.23       
E_break   : 1.6e+03    
Ph. Flux  : 1.56e-08   (DERIVED)
En. Flux  : 4.28e-11   (DERIVED)
TS: 676.030199235

The following counts maps were also done in pointlike.

Counts maps

1st half of time window
MET
Start = 239557417 seconds (2008-08-04T15:43:37)
Stop = 284206459 seconds (2010-01-03T10:14:19)

2nd half of time window
MET
Start = 284206459 seconds (2010-01-03T10:14:19)
Stop = 328855431 seconds (2011-06-04T04:43:49)

Full time window
MET
Start = 239557417 seconds (2008-08-04T15:43:37)
Stop = 328855431 seconds (2011-06-04T04:43:49)

Front only events





Back only events




Front and back events




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2) The analysis was also done with two different time windows to try and get a statistical check on any of the features observed in the SEDs for the full timeframe.

20 July 2011

Between 100MeV and 1GeV there appears to be significant variation in the flux observed by the Fermi satellite depending on which type of events (Front, back, or both) are used in producing the SEDs.  The SEDs, using close to three years of observation data, are as follows:

Full time window
MET
Start = 239557417 seconds (2008-08-04T15:43:37)
Stop = 328855431 seconds (2011-06-04T04:43:49)

Back only events

Front only events

Both

 

Image Added
Norm      : 6.25e-12   
Index     :  0.976      
beta      :  0.24       
E_break   :  635        
Ph. Flux  :  1.3e-08   
En. Flux  :  4.33e-11  
TS: 412.8

Image Added
Norm      : 6.25e-12   
Index     :  0.976      
beta      : 0.24       
E_break   :  635        
Ph. Flux  :  1.3e-08   
En. Flux  :  4.33e-11  
TS: 412.8

Image Added
Norm      : 6.25e-12   
Index     : 0.976      
beta      :  0.24       
E_break   :  635        
Ph. Flux  :  1.3e-08  
En. Flux  :  4.33e-11  
TS: 412.8