On the origin of solar magnetic fields

Abstract

view Abstract Citations (74) References (50) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS On the origin of solar magnetic fields. Layzer, D. ; Rosner, R. ; Doyle, H. T. Abstract A fresh approach to the theoretical problems raised by observations of solar magnetic fields is outlined. Tentative conclusions are made that the large-scale magnetic field from which Cowling's (1953) hypothetical toroidal field is generated by differential rotation is not itself regenerated by diffusive processes in the sun's outer layers and that this field enters the differentially rotating layer from below rather than from above. Two crucial aspects of turbulent-dynamo theory are critically examined: turbulent diffusion and the spatial separability of the alpha and omega regenerative processes. It is argued that the mathematical difficulties encountered in this theory are rooted in unrealistic physical assumptions and that there is no physically or mathematically plausible basis for turbulent-dynamo theories. The hypothesis is considered that an irregular magnetic field, largely confined to the convective core, was generated during the Hayashi phase of pre-main-sequence evolution. Publication: The Astrophysical Journal Pub Date: May 1979 DOI: 10.1086/157047 Bibcode: 1979ApJ...229.1126L Keywords: Dynamo Theory; Solar Magnetic Field; Stellar Evolution; Main Sequence Stars; Stellar Models; Toroids; Solar Physics; Dynamo Theory:Sun; Magnetic Fields:Sunspots; Solar Magnetic Fields:Origin full text sources ADS |