Table 2
Sets of CR injection and propagation parameters discussed in the text.
| Model | K0 [kpc2/yr] | δ | L [kpc] | Vc [kpc/yr] |
|
|
|
|
||||||
| A | 2.4 × 10-9 | 0.85 | 1.5 | 1.38 × 10-8 | 1.17 × 1052 | 3.22 × 1051 |
| B | 2.4 × 10-9 | 0.85 | 1.5 | 1.38 × 10-8 | 0.53 × 1052 | 1.06 × 1051 |
| MED | 1.12 × 10-9 | 0.7 | 4 | 1.23 × 10-8 | 15.8 × 1051 | 3.14 × 1051 |
|
|
||||||
| model | αp + δ | αHe + δ | ν [century-1] | H injection | He injection | χ2 / d.o.f. |
|
|
||||||
| A | 2.9 | 2.8 | 0.8 | 0.19 | 0.05 | 0.61 |
| B | 2.85 | 2.7 | 1.4 | 0.12 | 0.07 | 1.09 |
| MED | 2.85 | 2.7 | 0.8 | 0.148 | 0.07 | 1.3 |
Notes.The diffusion coefficient normalization K0 and spectral index δ, halo half height L, and convective velocity Vc describe the diffusion model. The source terms 
and 
and spectral source indices αp and αHe describe the individual sources. The “injection” terms give the fraction of the supernova energy that is injected into cosmic ray acceleration, between 1 GeV and 106 GeV.
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