Investigation of astrophysical filaments and determination of their size

Details Investigation of astrophysical filaments and determination of their size Investigation of astrophysical filaments and determination of their size

Mar 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993a%26a...270..416r&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 270, no. 1-2, p. 416-425.

Astronomy and Astrophysics

Astronomy

11

Cosmic Plasma, Magnetohydrodynamic Stability, Radio Jets (Astronomy), Very Large Array (Vla), Plasma Radiation, Supernova Remnants, Synchrotron Radiation

Scientific paper

Recent VLA observations show filamentary structures in many different astrophysical objects as the Galactic Center or extragalactic jets. Analytical calculations of the size and of the nonlinear equilibrium of these filaments are presented. The thermal instability due to synchrotron losses suffered by the relativistic electrons of a magnetized plasma is limited on short scales by a transverse Bohm-like diffusion. The application of our results to the observations of objects so different as extragalactic jets, supernovae remnants or the Galactic Center shows good agreement, and the size of the filaments depends only on the background magnetic field B and is proportional to B exp -3/2.

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