Structural features of sun photosphere under high spatial resolution

TL;DR

This paper analyzes high-resolution solar photosphere features, including granules, faculaes, micropores, and intergranular gaps, providing new insights into their structure, magnetic diffusion regimes, and characteristic scales.

Contribution

It offers a detailed analysis of small-scale photospheric elements using modern adaptive telescopes and theoretical estimates of their characteristic sizes.

Findings

Dark intergranular gaps are about 20-30 km thick.

Micropores have diameters of 200-400 km.

Magnetic diffusion in these structures is stationary, with plasma flows compensating magnetic flux spreading.

Abstract

The main small-scale elements observed in the solar photosphere at high resolution are discussed: granules, faculaes, micropores. As a separate element of the fine structure, a continuous network of dark intergranular gaps is considered. The results of image processing of micropores and faculaes knots obtained using modern adaptive telescopes are presented. For intergranular gaps and micropores, a stationary regime of magnetic diffusion is determined, in which horizontal-vertical plasma flows converging to the gap (and micropores) compensate for the dissipative spreading of the magnetic flux on a given scale. A theoretical assessment of the characteristic scales of these structures in the photosphere is obtained: 20-30 km for the thickness of dark intergranular spaces and 200-400 km for the diameter of micropores.