5 papers
MHD simulations on the large-scale propagation of high-speed solar wind streams
Stefan J. Hofmeister
We investigate the propagation of high-speed solar wind streams from their origin near the Sun to 1 AU using three-dimensional magnetohydrodynamic simulations. By tracking both glo…
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…
Velocity and Density Fluctuations in the Quiet Sun Corona
Michael Hahn, Xiangrong Fu, Stefan J. Hofmeister +3
We investigate the properties and relationship between Doppler-velocity fluctuations and intensity fluctuations in the off-limb quiet Sun corona. These are expected to reflect the…
Revised Point-Spread Functions for the Atmospheric Imaging Assembly onboard the Solar Dynamics Observatory
Stefan Hofmeister, Daniel Wolf Savin, Michael Hahn
We present revised point-spread functions (PSFs) for the Atmospheric Imaging Assembly (AIA) onboard the Solar Dynamics Observatory (SDO). These PSFs provide a robust estimate of th…
The Basic Iterative Deconvolution: A fast instrumental point-spread function deconvolution method that corrects for light that is scattered out of the field of view of a detector
Stefan Johann Hofmeister
A point-spread function describes the optics of an imaging system and can be used to correct collected images for instrumental effects. The state of the art for deconvolving images…