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Table 1
Physical parameter values used in this 3D model of CR injection and propagation in the GC.
| Model parameters | Values |
|---|---|
| Proton spectral index | 2 |
| Emax of the injected proton spectrum | 1 PeV |
| Box size | 500 pc×500 pc×50 pc |
| Total gas mass | 4 × 107 M⊙ |
| D0 (10 TeV) | 2 × 1029 cm2 s−1 |
| Spectral index of the diffusion coefficient (d) | 0.3 |
| ESN | 1051 erg |
| SN recurrence time | 2500 yr |
| Escape time after the SN explosion at 1 TeV | 6000 yr |
| Escape time after the SN explosion at 10 TeV | 2500 yr |
Notes. These values are the same as in Jouvin et al. (2017), except for the CR escape time that had been added to the initial model.
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