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Problems of Jet Physics

Published online by Cambridge University Press:  30 March 2016

P.A.G. Scheuer
P.A.G. Scheuer*
Affiliation:
Mullard Radio Astronomy Observatory, Cavendish Laboratory, Cambridge, U.K.

Extract

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What have I learned about jets since the Albuquerque meeting (IAL) Symposium No.97) last summer?

There is where most of the gravitational energy is released, the funnels on the rotation axis of the accretion torus provide the right sort of geometry, and radiation is abundant. But the experts (Sikora & Wilson 1981 and references therein) never can make radiation-driven jets with Lorentz factor γ >> 1. Why? It is because, when an electron moves up through the funnel at a substantial fraction of the speed of light c, it sees as much radiation striking it trom the front as from behind; acceleration then stops. Large γ are attainable only if the source of radiation subtends an angle ≲ 1/γ behind the source.

Type
Joint Commission Meetings
Information
Highlights of Astronomy , Volume 6 , 1983 , pp. 735 - 737
Copyright
Copyright © Reidel 1983

References

Begelman, M. 1982, IAU Symposium No.97, ed. Heeschen, & Wade, , Reidel Pu blishing Co., p. 223.Google Scholar
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Preuss, E., Alef, N., Pauliny-Toth, I. & Kellermann, K.I. 1982, IAU Symposium No.97, p.289.Google Scholar
Rudnick, L. 1982, IAU Symposium No.97, p.47.Google Scholar
Throne, K.S. & Blandford, R.D. 1982, IAU Symposium No.97, p.255.Google Scholar
Sikora, M. & Wilson, D.B. 1981, Mon. Not. R. astr. Soc., 197, 529.Google Scholar