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Table 4
Physical parameters of BL Lac deduced from the fast propagation of a perturbation in the jet.
| Parameter | Value | Unit |
|
|
||
| θ | 2.2 | deg |
| δ | 23.8 | |
| Γ | 16.6 | |
| α1/ 2 | 0.17 | deg |
| α2/ 2 | 0.81 | deg |
Notes. α1/ 2 and α2/ 2 are the intrinsic half aperture angles of the inner jet for apparent distance to the core upstream and downstream 2 mas, respectively.
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