Aims:We study the emergence of magnetic flux from the near-surface layers of the solar convection zone into the photosphere. Methods: To model magnetic flux...
-
PublicationMagnetic flux emergence in granular convection: radiative MHD simulations and observational signatures
-
PublicationMagnetic flux emergence into the solar photosphere and chromosphere
Aims: We model the emergence of magnetized plasma across granular convection cells and the low atmosphere, including layers up to the mid-chromosphere. Methods...
-
PublicationMagnetic Sensitivity in the Wing Scattering Polarization Signals of the Hydrogen Lyman-α Line of the Solar Disk Radiation
The linear polarization produced by scattering processes in the hydrogen Lyα line of the solar disk radiation is a key observable for probing the chromosphere...
-
PublicationMagneto-optical Effects in the Scattering Polarization Wings of the Ca I 4227 Å Resonance Line
The linear polarization pattern produced by scattering processes in the Ca I 4227 Å resonance line is a valuable observable for probing the solar atmosphere...
-
TalkMapping the Sun's upper photosphere with artificial neural networks
In this talk I'll present results from a recent paper in which we have developed a new analysis technique for solar spectra based on artificial neural networks...
-
NewsMATS CARLSSON: “In astrophysics we cannot perform experiments so we just have to extract information from the light the star emits”
Professor at the Institute of Theoretical Astrophysics at the University of Oslo (Norway) and director of the center of excellence "Rosseland Center for Solar...
-
PublicationMilne-Eddington inversion of the Fe I line pair at 630 nm
Context. The iron lines at 630.15 and 630.25 nm are often used to determine the physical conditions of the solar photosphere. A common approach is to invert...
-
PublicationModel Photospheres for Late-Type Stars from the Inversion of High-Resolution Spectroscopic Observations: Groombridge 1830 and ɛ Eridani
An inversion technique to recover LTE one-dimensional model photospheres for late-type stars, which was previously applied to the Sun by Allende Prieto et al...
-
PublicationModel Photospheres for Late-Type Stars from the Inversion of High-Resolution Spectroscopic Observations: The Sun
An inversion technique has been developed to recover LTE one-dimensional model photospheres for late-type stars from very high resolution, high signal-to-noise...