110 citations · 319 across the 8 of their papers we have counts for
8 papers
Are Non-thermal Velocities in Active Region Coronal Loops Anisotropic?
Michael Hahn, Mahboubeh Asgari-Targhi, Daniel Wolf Savin
We have measured line widths in active region coronal loops in order to determine whether the non-thermal broadening is anisotropic with respect to the magnetic field direction. Th…
Deriving instrumental point spread functions from partially occulted images
Stefan Johann Hofmeister, Michael Hahn, Daniel Wolf Savin
The point-spread function (PSF) of an imaging system describes the response of the system to a point source. Accurately determining the PSF enables one to correct for the combined…
Evidence for Parameteric Decay Instability in the Lower Solar Atmosphere
Michael Hahn, Xiangrong Fu, Daniel Wolf Savin
We find evidence for the first observation of the parametric decay instability (PDI) in the lower solar atmosphere. Specifically, we find that the power spectrum of density fluctua…
Critical Science Plan for the Daniel K. Inouye Solar Telescope (DKIST)
Mark P. Rast, Nazaret Bello González, Luis Bellot Rubio +84
The Daniel K. Inouye Solar Telescope (DKIST) will revolutionize our ability to measure, understand and model the basic physical processes that control the structure and dynamics of…
Electron-Impact Multiple Ionization Cross Sections for Atoms and Ions of Helium through Zinc
Michael Hahn, Alfred Mueller, Daniel Wolf Savin
We have compiled a set of electron-impact multiple ionization (EIMI) cross sections for astrophysically relevant ions. EIMI can have a significant effect on the ionization balance…
Inferring the Coronal Density Irregularity from EUV Spectra
Michael Hahn, Daniel Wolf Savin
Understanding the density structure of the solar corona is important for modeling both coronal heating and the solar wind. Direct measurements are difficult because of line-of-sigh…