GALACTIC SPIRAL ARMS AND DYNAMO CONTROL PARAMETERS

Authors
SHUKUROV A SOKOLOFF D
Citation
A. Shukurov et D. Sokoloff, GALACTIC SPIRAL ARMS AND DYNAMO CONTROL PARAMETERS, Studia geophysica et geodaetica, 42(3), 1998, pp. 391-396
Citations number
16
Categorie Soggetti
Geochemitry & Geophysics
Journal title
Studia geophysica et geodaetica → ACNP
ISSN journal
00393169
Volume
42
Issue
3
Year of publication
1998
Pages
391 - 396
Database
ISI
SICI code
0039-3169(1998)42:3<391:GSAADC>2.0.ZU;2-X
Abstract
We discuss the effects of galactic spiral arms on the alpha-coefficien t, turbulent diffusivity and turbulent energy density of the interstel lar turbulence. We argue that the alpha-coefficient and the dynamo num ber are larger in the interarm regions, whereas the kinetic energy den sity of turbulence is larger in the arms; the turbulent magnetic diffu sivity can be only weakly affected by the spiral pattern.