Context. The Helioseismic and Magnetic Imager (HMI) provides continuum images and magnetograms with a cadence better than one per minute. It has been...
Context. The Helioseismic and Magnetic Imager (HMI) provides continuum images and magnetograms with a cadence better than one per minute. It has been...
Equilibrium of Twisted Horizontal Magnetic Flux Tubes
The equilibrium of non-force-free twisted horizontal magnetic flux tubes is studied including gravity and an arbitrary pressure perturbation on the tube...
Estimating the longitudinal magnetic field in the chromosphere of quiet-Sun magnetic concentrations
Context. Details of the magnetic field in the quiet-Sun chromosphere are key to our understanding of essential aspects of the solar atmosphere. However, the...
Estimating the magnetic field strength from magnetograms
A properly calibrated longitudinal magnetograph is an instrument that measures circular polarization and gives an estimation of the magnetic flux density in...
Estimations of the magnetic field strength in the torus of IC 5063 using near-infrared polarimetry
An optically and geometrically thick torus obscures the central engine of active galactic nuclei (AGN) from some lines of sight. From a magnetohydrodynamical...
Evershed Clouds as Precursors of Moving Magnetic Features around Sunspots
The relation between the Evershed flow and moving magnetic features (MMFs) is studied using high-cadence, simultaneous spectropolarimetric measurements of a...
Evershed flow observed in neutral and singly ionized iron lines
The amplitudes of the Evershed flow are measured using pairs of carefully selected Fe i and Fe ii spectral lines that are close in wavelength and registered...
Evidence for Collisional Depolarization in the MgH Lines of the Second Solar Spectrum
The analysis of the Hanle effect in solar molecular lines allows us to obtain empirical information on hidden, mixed-polarity magnetic fields at subresolution...