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Is there Evidence for Disk-Halo Connections in M31?

Published online by Cambridge University Press:  03 August 2017

Elly M. Berkhuijsen ,
Götz Golla  and
Rainer Beck
Elly M. Berkhuijsen
Affiliation:
Max-Planck-Institut für Radioastronomie Auf dem Hügel 69 D-5300 Bonn 1 Federal Republic of Germany
Götz Golla
Affiliation:
Max-Planck-Institut für Radioastronomie Auf dem Hügel 69 D-5300 Bonn 1 Federal Republic of Germany
Rainer Beck
Affiliation:
Max-Planck-Institut für Radioastronomie Auf dem Hügel 69 D-5300 Bonn 1 Federal Republic of Germany

Abstract

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There is some evidence for disk-halo connections in M31, i.e.: (1) The central area seems inclined w.r.t. the main disk. (2) In several regions in the southern half the magnetic field has a significant component perpendicular to the disk. However, (3) any general emission from a thick disk at λ75 cm is ~100x weaker than that from our Galaxy. The uniform disk field seems to inhibit cosmic-ray diffusion perpendicular to the plane, and/or the field at high z is exceptionally weak.

Type
II. The Disk-Halo Interface in Other Galaxies
Information
Symposium - International Astronomical Union , Volume 144: The Interstellar Disk-Halo Connection in Galaxies , 1991 , pp. 233 - 236
Copyright
Copyright © Kluwer 1991 

References

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