Relative variations of the physical parameters of variable extragalactic radio sources |
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| Authors: | S A Tyul’bashev P A Chernikov |
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| Institution: | (1) Pushchino Radio Astronomy Observatory, Astro Space Center, Lebedev Physical Institute, Moscow, Russia |
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| Abstract: | A method for studying the physical conditions in compact components of extragalactic radio sources displaying variability on time scales of hundreds of days is proposed. The method can be used to estimate the relative variations of the magnetic-field strength and number density of relativistic electrons in superluminal jets from the cores of quasars and radio galaxies. Results are presented for the jets of the quasars 3C 120, 3C 273, 3C 279, and 3C 345. The energies of the magnetic field and relativistic particles in these objects are not in equipartition. As a rule, the magnetic-field strength decreases appreciably during the evolution of an expanding jet, while the number of relativistic electrons grows. |
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