Coronal partings

TL;DR

This paper investigates coronal partings, a type of magnetic structure in the solar corona, analyzing their properties, classifications, and potential evolution into coronal holes based on X-ray, EUV images, and magnetograms.

Contribution

It provides a detailed observational analysis of coronal partings, classifies their types, and discusses their possible evolutionary relationship with coronal holes.

Findings

Coronal partings are channels of opposite polarity within unipolar magnetic fields.

They can transform into coronal holes and vice versa.

Three classes of partings are identified: global, intersecting, and complex.

Abstract

The basic observational properties of "coronal partings" -- the special type of quasi-one-dimensional magnetic structures, identified by a comparison of the coronal X-ray and EUV images with solar magnetograms -- are investigated. They represent the channels of opposite polarity inside the unipolar large-scale magnetic fields, formed by the rows of magnetic arcs directed to the neighboring sources of the background polarity. The most important characteristics of the partings are discussed. It can be naturally assumed that -- from the evolutionary and spatial points of view -- the partings can transform into the coronal holes and visa versa. The classes of global, intersecting, and complex partings are identified.