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Fig. 7.


Doppler boosting factor as a function of jet position for φ = 0.25, γj = 1.2 and 3, and i = 0 (solid lines), i = 30° (dashed lines), and i = 60° (dotted lines). The black solid line at sets the border between boosting (> 1) and deboosting (< 1). Only the values up to l = 10a are shown.

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