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From the 1 of 5 linked papers with an AI index.

activity
20242026
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5 papers

astro-ph.SR2026

Three-dimensional Magnetic Field Structure of a Quiet-Sun Region Revealed by Sunrise III/SCIP

Masahito Kubo, Yukio Katsukawa, Yusuke Kawabata +38

The paper presents high‑precision spectropolarimetric observations of a quiet‑Sun region using the Sunrise III/SCIP instrument, revealing narrow, thread‑like chromospheric magnetic…

astro-ph.SR2026

Mg II h&k spectral line properties computed using 3D radiative transfer in an enhanced network region simulated with the MURaM-ChE code

P. Ondratschek, D. Przybylski, H. N. Smitha +3

The Mg II h&k lines form in the middle to upper chromosphere and are well-suited to study the structure of the chromosphere. However, the details of their formation in the solar ch…

astro-ph.SR2026

Ca ii 854.2 nm in an enhanced network region simulated with MURaM-ChE

P. A. Ondratschek, D. Przybylski, H. N. Smitha +2

The Ca ii 854.2 nm line is widely used to study the chromosphere of the Sun. In the quiet Sun, the spatially averaged line profile shows a red asymmetry and a redshift of the line…

astro-ph.SR2025

Probing chromospheric fine structures with a Hα proxy using MURaM-ChE

Sanghita Chandra, Robert Cameron, Damien Przybylski +3

H observations of the solar chromosphere reveal dynamic small-scale structures known as spicules at the limb and rapid blue and red shifted excursions (RBEs/RREs) on-disk. We w…

astro-ph.SR2024

Mg ii h&k spectra of an enhanced network region simulated with the MURaM-ChE code. Results using 1.5D synthesis

P. Ondratschek, D. Przybylski, H. N. Smitha +3

The Mg ii h&k lines are key diagnostics of the solar chromosphere. They are sensitive to the temperature, density, and non-thermal velocities in the chromosphere. The average Mg ii…