Broadband Radio Spectral Observations of Solar Eclipse on 2008-08-01 and Implications on the Quiet Sun Atmospheric Model

TL;DR

This study presents broadband radio spectral observations of the 2008 solar eclipse, analyzing data from two locations to develop a new semiempirical model of the quiet Sun's coronal plasma density, comparing it with classic models.

Contribution

First broadband spectral analysis of the 2008 solar eclipse from two sites, leading to a new semiempirical coronal plasma density model for the quiet Sun.

Findings

Developed a new semiempirical coronal plasma density model.

Compared the new model with classic models showing improvements.

First simultaneous broadband spectral observation during a solar eclipse.

Abstract

Based on the joint-observations of the radio broadband spectral emissions of solar eclipse on August 1, 2008 at Jiuquan (total eclipse) and Huairou (partial eclipse) at the frequencies of 2.00 -- 5.60 GHz (Jiuquan), 2.60 -- 3.80 GHZ (Chinese solar broadband radiospectrometer, SBRS/Huairou), and 5.20 -- 7.60 GHz (SBRS/Huairou), the authors assemble a successive series of broadband spectrum with a frequency of 2.60 -- 7.60 GHz to observe the solar eclipse synchronously. This is the first attempt to analyze the solar eclipse radio emission under the two telescopes located at different places with broadband frequencies in the periods of total and partial eclipse. With these analyses, the authors made a new semiempirical model of the coronal plasma density of the quiet Sun and made a comparison with the classic models.