Fig. 9.

Plane of apparent speed (βapp) and Doppler factor (δ). Solid and dashed lines correspond to constant values of bulk Lorenz factors and viewing angles, respectively. The blue and green triangles and red circle show possible values of βapp and δ assuming the same Γ = 20 for C0-1 and C0-2, respectively. The vertical black lines correspond to the βapp values of C0-1 and C0-2. The red and blue shaded areas indicate uncertainties of βapp for C0-1 and C0-2, respectively.
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