activity
20172026
most citedThe influence of NLTE effects in Fe I lines on an inverted atmosphere I. 6301 A and 6302 A lines formed in 1D NLTE

33 citations · 78 across the 16 of their papers we have counts for

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astro-ph.SR2025

Formation of chromospheric Fe I lines in the near ultraviolet in 1D atmospheres

E. Harnes, H. N. Smitha, A. Korpi-Lagg +2

In the near ultraviolet (NUV) part of the solar spectrum, there are several Fe I lines with very broad profiles, typical of chromospheric lines. These lines are largely unexplored…

astro-ph.IM2025

The Sunrise Ultraviolet Spectropolarimeter and Imager: Instrument description

A. Feller, A. Gandorfer, B. Grauf +46

The third science flight of the balloon-borne solar observatory Sunrise carries three entirely new post-focus science instruments with spectropolarimetric capabilities, concurrentl…

astro-ph.SR20251 cited

Three-dimensional non-LTE radiative transfer effects in Fe I lines IV. Line formation at high spatial resolution

R. Holzreuter, H. N. Smitha, S. K. Solanki

In the first three papers of this series, we investigated the formation of photospheric neutral iron lines in different atmospheres ranging from idealised flux tube models to compl…

astro-ph.IM2025

TuMag: the tunable magnetograph for the Sunrise III mission

J. C. del Toro Iniesta, D. Orozco Suárez, A. Álvarez-Herrero +61

One of the instruments aboard the Sunrise III mission, the Tunable Magnetograph (TuMag), is a tunable imaging spectropolarimeter in visible wavelengths. It is designed to probe the…

astro-ph.IM2025

Sunrise III: Overview of Observatory and Instruments

Andreas Korpi-Lagg, Achim Gandorfer, Sami K. Solanki +117

In July 2024, Sunrise completed its third successful science flight. The Sunrise III observatory had been upgraded significantly after the two previous successful flights in 2009 a…