82 citations · 340 across the 18 of their papers we have counts for
16 papers · 1 filter
Detection of Doppler velocity differences between ions and neutrals in an erupting prominence
Yuwei Huang, Kiyoshi Ichimoto, Tetsu Anan
We performed a spectroscopic observation of an erupting prominence occurred on the solar limb on 2015 May 8th in He I 706.5 nm, O I 777.2 nm triplet and Ca II 849.8 nm lines to inv…
The Sunrise Chromospheric Infrared Spectro-Polarimeter SCIP: an instrument for SUNRISE III
Y. Katsukawa, J. C. del Toro Iniesta, S. K. Solanki +54
The Sunrise balloon-borne solar observatory is equipped with a one-meter aperture optical telescope, offering a unique platform for uninterrupted seeing-free observations across ul…
Measurements of Photospheric and Chromospheric Magnetic Field Structures Associated with Chromospheric Heating over a Solar Plage Region
Tetsu Anan, Thomas A. Schad, Reizaburo Kitai +6
In order to investigate the relation between magnetic structures and the signatures of heating in plage regions, we observed a plage region with the He I 1083.0 nm and Si I 1082.7…
He I spectropolarimetry of a supersonic coronal downflow within a sunspot umbra
Thomas A. Schad, Gabriel I. Dima, Tetsu Anan
We report spectropolarimetric observations of a supersonic downflow impacting the lower atmosphere within a large sunspot umbra. This work is an extension of Schad et al. 2016 usin…
Shock Heating Energy of Umbral Flashes Measured with Integral Field Unit Spectroscopy
Tetsu Anan, Thomas A. Schad, Sarah A. Jaeggli +1
Umbral flashes are periodic brightness increases routinely observed in the core of chromospheric lines within sunspot umbrae and are attributed to propagating shock fronts. In this…
Chromospheric polarimetry through multi-line observations of the 850 nm spectral region III: Chromospheric jets driven by twisted magnetic fields
C. Quintero Noda, H. Iijima, Y. Katsukawa +11
We investigate the diagnostic potential of the spectral lines at 850 nm for understanding the magnetism of the lower atmosphere. For that purpose, we use a newly developed 3D simul…