Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1974
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1974mnras.169..395b&link_type=abstract
Monthly Notices of the Royal Astronomical Society, vol. 169, Dec. 1974, p. 395-415.
Astronomy and Astrophysics
Astronomy
687
Astronomical Models, Plasma Generators, Radio Sources (Astronomy), Relativistic Plasmas, Active Galactic Nuclei, Channel Flow, Cosmic Plasma, Cygnus Constellation, Equilibrium Flow, High Temperature Plasmas, Magnetohydrodynamic Flow, Supersonic Flow
Scientific paper
A mechanism is proposed for the formation of radio components in strong double sources such as Cygnus A. Relativistic plasma generated in an active galactic nucleus cannot escape isotropically if the nucleus is surrounded by too much dense thermal gas. There is, however, a possible equilibrium flow in which the plasma escapes along two oppositely-directed channels or 'exhausts'. At all points on the boundary of these channels, the pressure of the relativistic (possibly magnetized) plasma must balance the pressure of the static thermal gas cloud. The outflow velocity becomes sonic where the external pressure is its central value. The channel cross-section reaches a minimum value at this point. The channel then widens again as the external pressure drops still further, and, as in a de Laval nozzle, the flow becomes supersonic. Relativistic plasma can thus be collimated into two relativistic beams.
Blandford Roger. D.
Rees Martin J.
No associations
LandOfFree
A 'twin-exhaust' model for double radio sources does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A 'twin-exhaust' model for double radio sources, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A 'twin-exhaust' model for double radio sources will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1338682