Kinematics of relativistic ejection with Hubble flow |
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Authors: | S M Gong |
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Institution: | (1) Purple Mountain Observatory, Academia Sinica, Nanjing, China |
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Abstract: | What we observe as an apparent superluminal motion is the resultant velocity of Hubble flow and a local ejection. Taking Hubble flow into account, one can explain, problems posed for the relativistic beaming model, such as the one-sidedness problem and the untolerable extension of the depromected structure of some superluminal sources; the misalignment of small-and large-scale jets can be analyzed more appropriately. A significant by-product of the present investigation is the initiation to find a new way to determine the value of the Hubble constantH
0, provided that one can observe the superluminal motion at much longer wavelengths, say, meter wavelengths. |
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