Stellar magnetic field
Videos
A stellar magnetic field is a magnetic field generated by the motion of conductive plasma inside a star. This motion is created through convection, which is a form of energy transport involving the ph
Surface magnetic field of SU Aur (a young star of T Tauri type), reconstructed by means of Zeeman-Doppler imaging
Ssn yearly
Photosphere
Videos
The photosphere is a star's outer shell from which light is radiated. It extends into a star's surface until the plasma becomes opaque, equivalent to an optical depth of approximately 2⁄3, or equivale
Stellar magnetic field
…without a comparable gain in density. As a result, the magnetized region rises relative to the remainder of the plasma, until it reaches the star's photosphere. This creates starspots on the surface, and the related phenomenon of coronal loops. A star's magnetic field can be measured using the Zeeman effect…
Sun's surface in false color
Solar atmosphere: temperature and density. See here for meanings of extra lines in the graph.