43 citations · 182 across the 11 of their papers we have counts for
11 papers
Laboratory Calibrations of Fe XII-XIV Line-Intensity Ratios for Electron Density Diagnostics
Thusitha P. Arthanayaka, Peter Beiersdorfer, Gregory V. Brown +5
We have used an electron beam ion trap to measure electron-density-diagnostic line-intensity ratios for extreme ultraviolet lines from F XII, XIII, and XIV at wavelengths of 185-20…
Measured reduction in Alfvén wave energy propagating through longitudinal gradients scaled to match solar coronal holes
Sayak Bose, Troy Carter, Michael Hahn +3
We have explored the effectiveness of a longitudinal gradient in Alfvén speed in reducing the energy of propagating Alfvén waves under conditions scaled to match solar coronal hole…
Perspectives on Astrophysics Based on Atomic, Molecular, and Optical (AMO) Techniques
Daniel Wolf Savin, James F. Babb, Paul M. Bellan +35
About two generations ago, a large part of AMO science was dominated by experimental high energy collision studies and perturbative theoretical methods. Since then, AMO science has…
Density Fluctuations in a Polar Coronal Hole
Michael Hahn, Elke D'Huys, Daniel Wolf Savin
We have measured the root-mean-square (RMS) amplitude of intensity fluctuations, , in plume and interplume regions of a polar coronal hole. These intensity fluctuations corresp…
Spectroscopic Measurements of the Ion Velocity Distribution at the Base of the Fast Solar Wind
Natasha L. S. Jeffrey, Michael Hahn, Daniel W. Savin +1
In situ measurements of the fast solar wind reveal non-thermal distributions of electrons, protons and, minor ions extending from AU to the heliopause. The physical mechanism…
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…