Spirality of Coronal Rays

Author: Ajabshirizadeh A.   Filippov B.  

Publisher: Springer Publishing Company

ISSN: 0038-0938

Source: Solar Physics, Vol.221, Iss.2, 2004-06, pp. : 283-295

Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.

Previous Menu Next

Abstract

The curvature of thin coronal rays was measured during their passage above the solar polar regions. We found that the coronal rays were convex in the direction of their motion along the position angle. The pattern illustrates clearly Parker's idea on the spiral interplanetary magnetic field formation. However, the amount of deviation from radial direction was found to be 2–3 times larger than that estimated using the simple relation obtained from the conservation of angular momentum of a gas jet emitted by a rotating body. We discuss a possible reason for the discrepancy.