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The data were analyzed for four five subselections, with counts cubes generated for emin, emax = 20, 5000 MeV (30 energy bands) for a 10x10 deg region centered on IC443:
- IC443 events only
- IC443 + Galactic + Isotropic (at full simulated statistics)
- IC443 + Galactic using only events with MCENERGY > 50 (=Gal(>50)) + Isotropic
- IC443 decimated by a factor of 10 (=IC443/10) + Galactic + Isotropic such that Galactic:Isotropic:IC443 = 10:1:1
- IC443/10 + Galactic using only events with MCENERGY > 50 Gal(>50) + Isotropic
This is intended to mimic simulations where the Galactic diffuse model was truncated below 50 MeV.
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| Code Block |
|---|
>>> like.setEnergyRange(60, 2000) |
These four five cases were analyzed both with energy dispersion handling turned off and turned on.
Results
ID | dataset | edisp handling | Index1 | BreakValue | Index2 |
|---|---|---|---|---|---|
| MC values | ... | -0.5 | 250 | -1.9 |
1 | IC443 only | no | -0.70 +/- 0.03 | 248 +/- 5 | -1.88 +/- 0.01 |
1 | IC443 only | yes | -0.43 +/- 0.07 | 249 +/- 10 | -1.89 +/- 0.01 |
2 | IC443/10+Gal(>50)+Iso | no | -10.04 80 +/- 0.14 04 | 290 253 +/- 36 7 | -1.90 88 +/- 0.04 01 |
2 | IC443/10+Gal(>50)+Iso | yes | 2 -0.35 47 +/- 10.76 15 | 176 248 +/- 8 16 | -1.82 89 +/- 0.04 01 |
2 | IC443/10+Gal(>50)+Iso | no | -10.05 78 +/- 0.66 04 | 282 251 +/- 93 6 | -1.89 88 +/- 0.03 01 |
2 | IC443/10+Gal(>50)+Iso | yes | -0.63 47 +/- 0.22 05 | 272 249 +/- 28 6 | -1.92 89 +/- 0.04 01 |
4 | IC443/10+Gal(>50)+Iso | no | -01.78 05 +/- 0.04 66 | 251 282 +/- 6 93 | -1.88 89 +/- 0.01 03 |
4 | IC443/10+Gal(>50)+Iso | yes | -0.47 63 +/- 0.05 22 | 249 272 +/- 6 28 | -1.89 92 +/- 0.01 04 |
5 | IC443/10+Gal(>50)+Iso | no | -01.80 04 +/- 0.04 14 | 253 290 +/- 7 36 | -1.88 90 +/- 0.01 04 |
5 | IC443/10+Gal(>50)+Iso | yes | -0 2.47 35 +/- 01.15 76 | 248 176 +/- 16 8 | -1.89 82 +/- 0.01 04 |