Titlebook: Extragalactic Radio Sources; David S. Heeschen,Campbell M. Wade Book 1982 International Astronomical Union 1982 BL Lac object.Galaxy.Quasa

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https://doi.org/10.1007/978-3-663-05229-6 the collimated jet energy into a diffuse emission region. Despite their usually low brightness these diffuse emission regions dominate the internal energy content in particles and fields, even for the collimated doubles. Note that only 1% of the total energy in Cyg A is in the hot spots (Perola, 1981).

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