Accretion-driven jets from young stars

Details Accretion-driven jets from young stars Accretion-driven jets from young stars

Jan 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...172..191k&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 172, no. 1-2, Jan. 1987, p. 191-199.

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Computation

17

Accretion Disks, Plasma Jets, Pre-Main Sequence Stars, Stellar Evolution, Stellar Magnetic Fields, Stellar Models, Computational Astrophysics, Magnetohydrodynamic Flow, Mass Flow Rate, Temperature Dependence

Scientific paper

An analytic model is proposed for the ionized jets from young stars. The jets are driven thermally, but the mechanism to assure their high collimations and long travel distances is explained by an electrodynamical process. In this process, the azimuthal component of the magnetic field plays an essential role. The development of this component, in turn, is due to the presence of compact accretion disks around young stars. Also, high temperatures required to explain the high velocities of the jets are considered as a consequence of accretion processes. In this sense, the jets may be regarded as accretion-driven. The basic equations employed in this paper are those of the resistive MHD in which the electrical conductivity is assumed to be constant, for simplicity.

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