On the Nature of the Solar Chromosphere

TL;DR

This paper analyzes high-resolution solar imagery to differentiate between types of chromospheric features, revealing that internetwork H-alpha mottles form the quiet-sun chromosphere, while network straws indicate transition-region conditions.

Contribution

It provides new insights into the structure of the solar chromosphere by distinguishing between internetwork mottles and network straws using high-resolution imagery.

Findings

Internetwork H-alpha mottles constitute the quiet-sun chromosphere.

Network straws reflect transition-region conditions.

High-resolution imagery differentiates chromospheric features.

Abstract

DOT high-resolution imagery suggests that only internetwork-spanning H-alpha "mottles" constitute the quiet-sun chromosphere, whereas more upright network "straws" in "hedge rows" reflect transition-region conditions.