Fluid structures in a radio galaxy lobe - Observations of 3C 33 south

Details Fluid structures in a radio galaxy lobe - Observations of 3C 33 south Fluid structures in a radio galaxy lobe - Observations of 3C 33 south

Feb 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988apj...325..189r&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 325, Feb. 1, 1988, p. 189-203.

Astronomy and Astrophysics

Astronomy

22

Extragalactic Radio Sources, Radio Galaxies, Radio Sources (Astronomy), Astronomical Maps, Bow Waves, Synchrotron Radiation

Scientific paper

Observations of the southern lobe of 3C 33 are presented which may provide observational confirmation for the idea that hydrodynamic considerations govern the basic appearance and structure of the leading edges of classical double sources. Apparent supersonic fluid flow features in the head of 3C 33 are identified. The head of the lobe is probably an illuminated bow shock which advances into the intergalactic medium at a Mach number of about 2.3. The synchrotron emissivity along the shock front scales with the local pressure jump as would be expected under conditions of equipartition between relativistic particles and fields. Observations of both external and internal shocks in extragalactic sources may permit a determination of the underlying physical flow parameters.

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