Spectropolarimetric investigations of the deep photospheric layers of solar magnetic structures

Autor*innen

• Nilda Oklay

Parameter

• Weltraum & Astronomie

Mehr zum Buch

Solar surface magnetism appears in various structures, often at scales below the resolution of modern telescopes. However, insights into the atmospheric structure of unresolved magnetic features can be gleaned through the careful selection of diagnostic tools and the analysis of spectropolarimetric data. By examining the observed polarization signal with specialized methods, we can extract key physical parameters of the atmosphere. This study focuses on investigating the temperature structure of small-scale magnetic elements to enhance our understanding of the unresolved magnetic features in the deep photosphere. We utilized spectropolarimetric observations of specific photospheric lines, including C I, Ti II, and Fe I, which probe deeper layers of the photosphere. By analyzing the ratios of their Stokes V amplitudes, we developed a temperature diagnostic tool. The measured profiles were analyzed through inversions to determine temperature stratification along the line-of-sight, with synthetic Stokes V amplitude values compared to observed data. Additionally, we computed synthetic observables from 3D MHD simulations of the solar photosphere, reflecting varying magnetic activity. The results were then compared with inversion outcomes. This exploratory work employs the Stokes V amplitude ratio technique alongside inversions and numerical simulations to showcase the diagnostic potential of the proposed method.

• Sprache: Englisch
• Erscheinungsdatum: 2011