68 citations · 249 across the 12 of their papers we have counts for
6 papers · 1 filter
A Point-Spread Function for the Extreme Ultraviolet High-Resolution Imager on board Solar Orbiter
Stefan J. Hofmeister, Emil Kraaikamp, Sergei Shestov +7
We present the point-spread function (PSF) of the Extreme Ultraviolet High-Resolution Imager (HRIEUV) onboard Solar Orbiter, which observes the Sun at 174 Angstrom. This PSF provid…
Observations of Non-thermal Velocity and Comparison with Alfvén Wave Turbulence Model in Solar Active Regions
M. Asgari-Targhi, D. H. Brooks, M. Hahn +3
We present a study of spectral line width measurements from the Extreme Ultraviolet Imaging Spectrometer (EIS) on {\it Hinode}. We used spectral line profiles of Fe {\sc xvi} 262.9…
Relative Abundance Measurements in Plumes and Interplumes
Chloé Guennou, Michael Hahn, Daniel Wolf Savin
We present measurements of relative elemental abundances in plumes and interplumes. Plumes are bright, narrow structures in coronal holes that extend along open magnetic field line…
Influence of Electron-Impact Multiple Ionization on Equilibrium and Dynamic Charge State Distributions: A Case Study Using Iron
Michael Hahn, Daniel Wolf Savin
We describe the influence of electron-impact multiple ionization (EIMI) on the ionization balance of collisionally ionized plasmas. We are unaware of any previous ionization balanc…
Evidence for Wave Heating of the Quiet Sun Corona
Michael Hahn, Daniel Wolf Savin
We have measured the energy and dissipation of Alfvenic waves in the quiet Sun. A magnetic field was used to infer the location and orientation of the magnetic field lines along wh…
Measurements of Anisotropic Ion Temperatures, Non-Thermal Velocities, and Doppler Shifts in a Coronal Hole
M. Hahn, D. W. Savin
We present a new diagnostic allowing one to measure the anisotropy of ion temperatures and non-thermal velocities as well as Doppler shifts with respect to the ambient magnetic fie…