Hostname: page-component-669899f699-cf6xr Total loading time: 0 Render date: 2025-05-05T16:08:18.864Z Has data issue: false hasContentIssue false
  • English
  • Français

The Role of Cosmic Rays and Alfvén Waves in the Structure of the Galactic Halo

Published online by Cambridge University Press:  19 July 2016

M. K. Dougherty  and
J. F. Mckenzie
M. K. Dougherty
Affiliation:
∗Max-Planck-Institut für Kernphysik, Postfach 103980, D-6900 Heidelberg 1, FRG
J. F. Mckenzie
Affiliation:
†Max-Planck-Institut für Aeronomie, Postfach 20, D-3411 Katlenburg-Lindau 3, FRG

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

The effect that cosmic rays and the Alfvén waves generated by them have on the structure of the plasma distribution perpendicular to the galactic disc in a hydrostatic model is examined. It is shown that the plasma distribution exhibits two length scales, essentially because the cosmic rays and Alfvén waves lift the gas up and stretch it out beyond the galactic plane. The predicted gas density far from the galactic plane indicates that models involving hydrostatic equilibrium should be replaced by those allowing for a galactic wind.

Type
4. Magnetohydrodynamics of Galactic Magnetic Fields
Information
Symposium - International Astronomical Union , Volume 140: Galactic and Intergalactic Magnetic Fields , 1990 , pp. 185 - 186
Copyright
Copyright © Kluwer 1990 

References

Breitschwerdt, D., Völk, H. J. and McKenzie, J. F. (1987), ‘Cosmic Ray and Wave Driven Galactic Wind Solutions’, Proceedings of the 20′th Int. Cosmic Ray Conf. (Moscow) 2, 115–118.Google Scholar
Dougherty, M. K. (1988), ‘Wave Particle Interactions in Anisotropic and Dispersive Media’, Ph.D Thesis, University of Natal, Durban, South Africa.Google Scholar
Ghosh, A. and Ptuskin, V. S. (1983), ‘The Role of Cosmic Rays in Hydrostatic Equilibrium of the Galactic Halo’, Astrophysics and Space Science 92, 37–44.Google Scholar
Ginzburg, V. L. and Ptuskin, V. S. (1976), ‘On the origin of cosmic rays : Some problems in high-energy astrophysics’, Reviews of Modern Physics 48, 161–189.Google Scholar
McKenzie, J. F., Breitschwerdt, D. and Völk, H. J. (1987), ‘Flux Tube Formulation of Galactic Wind Equations Including Cosmic Rays and Waves’, Proceedings of the 20′th Int. Cosmic Ray Conf. (Moscow) 2, 119–122.Google Scholar
McKenzie, J. F. and Völk, H. J. (1982), ‘Non-linear Theory of Cosmic Ray Shocks Including Self-generated Alfvén Waves’, Astronomy and Astrophysics 116, 191–200.Google Scholar