134 citations · 326 across the 5 of their papers we have counts for
5 papers
Proposal for the optical design of three robust and highly performing FPI systems for the European Solar Telescope
Goran B. Scharmer, Bo Lindberg
We describe a proposal for the optical design of three dual Fabry-Perot based narrowband filter systems for for the future European Solar Telescope (EST). These are intended to con…
Observationally based models of penumbral microjets
S. Esteban Pozuelo, J. de la Cruz Rodriguez, A. Drews +3
We study the polarization signals and physical parameters of penumbral microjets (PMJs) by using high spatial resolution data taken in the Fe I 630 nm pair, Ca II 854.2 nm and Ca I…
Convection and the origin of Evershed flows in sunspot penumbrae
G. B. Scharmer, A. Nordlund, T. Heinemann
We discuss a numerical 3D radiation-MHD simulation of penumbral fine structure in a small sunspot. This simulation shows the development of short filamentary structures with horizo…
MHD simulations of penumbra fine structure
T. Heinemann, A. Nordlund, G. B. Scharmer +1
We present results of numerical 3D MHD simulations with radiative energy transfer of fine structure in a small sunspot of about 4 Mm width. The simulations show the development of…
Magnetostatic penumbra models with field-free gaps
G. B. Scharmer, H. C. Spruit
We present numerical 2D magnetostatic models for sunspot penumbrae consisting of radially aligned field-free gaps in a potential magnetic field, as proposed by Spruit and Scharmer…