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Fig. 10.

image

Possible range of M87 jet viewing angles and jet speeds (in units of c) that satisfy the measured jet–to–counter-jet ratio R and our assumptions of the value of βapp at the core separation of 0.2–0.5 mas. The cross and vertical hatches show allowed ranges of the parameters for R and βapp. Only the overlapping region is physically allowed under the assumptions outlined in Sect. 4.4.

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