Conveners
Poster Session 10.1
- Jasmina Magdalenic (Royal Observatory of Belgium)
Inversion techniques are very powerful methods for obtaining information on the thermodynamic and magnetic properties of solar and stellar atmospheres. In recent years, very sophisticated inversion codes have been developed that are now routinely applied to spectro-polarimetric observations. Most of these inversion codes are designed for finding the optimum solution of the nonlinear inverse...
Granular lanes are seen in continuum images as features appearing as a bright rim followed by a dark lane traveling into a host granule. With the help of 3-D magnetohydrodynamic simulations it was found that the observed intensity pattern is the visible signature of a subsurface velocity vortex tube. These vortex tubes are regularly generated close to intergranular lanes and have their axis...
The magnetically dominated solar corona is structured in the form of loops or flux tubes. To observe this structure during minimum solar activity epochs (or in the quiescent corona) is a difficult task because density and temperature inhomogeneities between loops and their surroundings are relatively low, making them not easily distinguishable in EUV images. Differential emission measure...
The spectral window in the solar photosphere around the magnetically sensitive Cr I lines at 578.2 nm is explored. The goal is to analyze simultaneously 15 spectral lines, which comprise Cr I, Cu I, Fe I, Mn I, and Si I lines, without polarimetry to infer the thermodynamic and magnetic properties in a strongly magnetized plasma using the SIR inversion code.
The study is based on a new ...
The Sun has a Near-Surface Shear Layer (NSSL), within which the angular velocity decreases rapidly with radius. We provide an explanation of this layer based on the thermal wind balance equation. Since convective motions are not affected by solar rotation in the top layer of the convection zone, we argue that the temperature falls at the same rate at all latitudes in this layer. This makes the...
