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Lookup NU author(s): Professor Anvar Shukurov
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We argue that interstellar gas in elliptical galaxies can be turbulent, with turbulent scale and velocity of 400 pc and 20 km s(-1) respectively. An upper limit on turbulent velocity, similar or equal to 50 km s(-1), follows from the requirement that the turbulence dissipation rate does not exceed the X-ray gas luminosity. The turbulence can generate random magnetic fields of 0.3 muG strength at the above scale via fluctuation dynamo action. The resulting Faraday rotation is random, with a typical value of 5-30 rad m(-2), consistent with observational evidence available.
Author(s): Shukurov A
Publication type: Article
Publication status: Published
Journal: Highlights of Astronomy
Print publication date: 01/01/2002
Publisher: Cambridge University Press