A comparison of observations and simulations in the jets of the radio galaxies 3C303 and 3C274 (Messier 87)

Details A comparison of observations and simulations in the jets of the radio galaxies 3C303 and 3C274 (Messier 87) A comparison of observations and simulations in the jets of the radio galaxies 3C303 and 3C274 (Messier 87)

Nov 2004

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2004aps..dppem1002l&link_type=abstract

American Physical Society, 46th Annual Meeting of the Division of Plasma Physics, 15-19 November, 2004, Savannah, GA. MEETING I

Physics

Plasma Physics

Scientific paper

Jets in active galactic nuclei (AGN) are created in accretion disks around supermassive black holes and they can retain their collimation up to the order of the megaparsec. To understand the physical causes of this remarkable collimation over such large distances is a great challenge, could lead to important new insights in the physics of magnetoplasmas. In the present work we take a two-pronged approach. First, we gather the observational evidence from two well-defined jets. One is from the AGN of M87, is relatively small and closeby, and propagates within a galaxy cluster environment. The other is from the more distant radio galaxy 3C303, and has greater dimensions and lunimosity. For both jets we derive new constraints on the plasma properties of the jets. Second, we simulate the behaviour of jets using a mathematical model recently developed [1]. The final goal is to provide good estimates of plasma parameters for the two jets and to determine the ability of MHD models to describe the collimation of extragalactic jets. [1] G. Lapenta, Phys. Rev. Lett., 90, 135005, 2003.

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