Constraining the amplitude of turbulence in solar corona using observations of angular broadening of radio sources

TL;DR

This paper presents an exact formulation for estimating the angular broadening of radio sources caused by turbulence in the solar corona, improving accuracy when baseline lengths are near the turbulence's inner scale.

Contribution

It introduces a precise method for calculating angular broadening using the phase structure function, especially effective at the inner scale of turbulence.

Findings

Enhanced accuracy in angular broadening estimates

Better understanding of turbulence effects in the solar corona

Applicable to observations with baseline lengths near the inner scale

Abstract

The angular broadening of compact radio sources observed through a medium having turbulent density irregularities is usually estimated using the phase structure function. We employ an exact formulation for the phase structure function that helps in obtaining an accurate estimate of angular broadening when the baseline lengths are comparable to the inner scale of the turbulent spectrum.