6 August 2011

Start time: 239557417 (MET)

Stop time: 333927212 (MET)

Energy: 100MeV - 100GeV

ROI: 20 degrees diameter

The following two SEDs were generated for SNR G349.7+0.2

home directory: /afs/slac/g/glast/users/ariel/G349702


Generated using gtlike


Generated using pointlike

Energy

Flux

Flux_Err

[MeV]

[ph/cm^2/s/MeV]

[ph/cm^2/s/MeV]

133.4

3.5e-10

1.6e-10

237.1

4.8e-10

4.4e-11

421.7

1.3e-10

1.3e-11

749.9

1.2e-11

3.5e-12

1333.5

<2.9e-12

 

2371.4

6.0e-13

2.5e-13

4217.0 

1.4e-13

6.7e-14

7498.9

<6.6e-14

 

13335.2

1.5e-14

8.4e-15

23713.7

3.4e-15

3.2e-15

42169.6

<4.3e-15

 

74989.4

<1.5e-15

 

TS: -686

Norm      : (1 + 0.090 - 0.083) (avg = 0.086) 1.5e-13    
Index     : (1 + 0.014 - 0.014) (avg = 0.014) 1.98       
Ph. Flux  : (1 + 0.052 - 0.049) (avg = 0.050) 3.15e-08   (DERIVED)
En. Flux  : (1 + 0.097 - 0.088) (avg = 0.092) 4.28e-11   (DERIVED)


Start = 239557417 seconds (MET)
Stop = 328855431 seconds (MET)

home directory: /afs/slac/g/glast/users/ariel/cassa2FGL

The following two SEDs were generated for Cassiopeia A


Generated using gtlike

Generated using pointlike

Energy

Flux

Flux_error

[MeV]

[ph/cm^2/s/MeV]

[ph/cm^2/s/MeV]

133.4

<8.8e-12

 

237.1

<4.3e-12

 

421.7

<5.2e-12

 

749.9

<5.6e-12

 

1333.5

1.8e-12

4.4e-13

2371.4

1.3e-12

1.6e-13

4217.0

4.4e-13

5.7e-14

7498.9

9.2e-14

1.8e-14

13335.2

3.1e-14

7.5e-15

23713.7

7.1e-15

3.7e-15

42169.6

2.5e-15

1.8e-15

74989.4

2.0e-16

3.3e-16

TS: 623

Norm      : (1 + 0.000 - 0.000) (avg = 0.000) 7.54e-13   
Index     : (1 + 0.004 - 0.004) (avg = 0.004) 1.91       
beta      : (1 + 0.355 - 0.262) (avg = 0.305) 0.133      
E_break   : (1 + 0.000 - 0.000) (avg = 0.000) 2.96e+03   
Ph. Flux  : (1 + 0.000 - 0.000) (avg = 0.000) 2.56e-08   (DERIVED)
En. Flux  : (1 + 0.441 - 0.306) (avg = 0.367) 4.99e-11   (DERIVED)


8 August 2011

The following analysis is done for W49B.

home directory: /afs/slac/g/glast/users/ariel/W49B

Search Center (RA,Dec)

=

(287.788,9.10667)

Radius

=

20 degrees

Start Time (MET)

=

239557417 seconds (2008-08-04T15:43:37)

Stop Time (MET)

=

334486765 seconds (2011-08-08T08:59:25)

Minimum Energy

=

100 MeV

Maximum Energy

=

100000 MeV



Generated using gtlike

Generated using pointlike

Energy

Flux

Flux_error

[MeV]

[ph/cm^2/s/MeV]

[ph/cm^2/s/MeV]

133.4

<3.1e-11

 

237.1

4.5e-10

4.1e-11

421.7

2.1e-10

1.2e-11

749.9

5.2e-11

3.4e-12

1333.5

1.6e-11

9.9e-13

2371.4

3.9e-12

2.9e-13

4217.0

1.2e-12

1.0e-13

7498.9

3.4e-13

3.7e-14

13335.2

4.9e-14

1.1e-14

23713.7

1.1e-14

4.2e-15

42169.6

4.4e-15

2.4e-15

74989.4

<1.3e-15

 

TS: 1719

Norm      : (1 + 0.000 - 0.000) (avg = 0.000) 9.18e-12   
Index     : (1 + 0.000 - 0.000) (avg = 0.000) 2.14       
beta      : (1 + 0.199 - 0.166) (avg = 0.182) 0.102      
E_break   : (1 + 0.000 - 0.000) (avg = 0.000) 1.6e+03    
Ph. Flux  : (1 + 0.000 - 0.000) (avg = 0.000) 1.98e-07   (DERIVED)
En. Flux  : (1 + 0.028 - 0.027) (avg = 0.028) 1.79e-10   (DERIVED)

In all of the previous SEDs the Bayesian method was used for the gtlike fitting algorithm.  The next gtlike plot for W49B is done using the frequentist fitting algorithm for gtlike:

Energy

Flux

Flux_error

[MeV]

[ph/cm^2/s/MeV]

[ph/cm^2/s/MeV]

133.4

<1.4e-11

 

237.1

4.5e-10

4.1e-11

421.7

2.1e-10

1.2e-11

749.9

5.2e-11

3.4e-12

1333.5

1.6e-11

9.9e-13

2371.4

3.9e-12

2.9e-13

4217.0

1.2e-12

1.0e-13

7498.9

3.4e-13

3.7e-14

13335.2

4.9e-14

1.1e-14

23713.7

1.1e-14

4.2e-15

42169.6

4.4e-15

2.4e-15

74989.4

<8.1e-16

 


10 August 2011

The discrepancy in upper limit calculations for flux between the Bayesian and Frequentist fitting algorithms appears to be described at this page .

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