Jets of moderate optical thickness from thick accretion disks

Details Jets of moderate optical thickness from thick accretion disks Jets of moderate optical thickness from thick accretion disks

Oct 1983

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983ap%26ss..96..431a&link_type=abstract

Astrophysics and Space Science (ISSN 0004-640X), vol. 96, no. 2, Oct. 1983, p. 431-445.

Physics

7

Accretion Disks, Cosmic Plasma, Galactic Nuclei, Optical Thickness, Plasma Jets, Acceleration (Physics), Electromagnetic Fields, Electron-Positron Plasmas, Funnels, Relativistic Effects

Scientific paper

The intense, super-Eddington, well-collimated radiation field generated by non-Keplerian accretion disks orbiting black holes can accelerate matter to high velocities. By using an energy balance argument which is both simple and physically appealing, it is shown that ordinary electron-proton plasmas can only reach relativistic gamma-factors up to 1.5. A light electron-positron plasma could be accelerated up to gamma less than 5. The approach is valid if the optical depth along the accelerating funnel is significant, and the optical depth across the funnel is negligible. It is, therefore, appropriate for long, narrow funnels. The present method could easily be generalized to disk geometries other than the examples given here.

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