Borders (-[X.sub.s]; + [X.sub.s]) of the strip of alienation by the parameter [B.sub.s] are determined by the calculated dependence (magnetograms) of the TL magnetic field strength module [B.sub.l] (Fig.
Analytical representation of magnetograms (14) permits to determine the size of the band [+ or -] [X.sub.s] of the exclusion for a given parameter [B.sub.l]
To study their dynamics and physical properties we plot a sequence of magnetograms where we can easily identify two magnetic features (see upper panels in Figure 4 where the black/white plus signs are used to highlight the corresponding negative/positive magnetic elements).
A deeper analysis, using sequences of magnetograms, reveals the influence of these vortices affecting the dynamics of magnetic concentrations.
A sampling of topics: the microstructure of a sunspot penumbra, penumbral moving magnetic features, SOLIS-VSM solar vector magnetograms
, multigrid methods for polarized radiative transfer, tunable narrow-band filter for imaging polarimetry, the diffraction limited spectro-polarimeter, a brief overview of the Second Solar Spectrum, polarizability factors for molecular bands, spectro-polarimetry of cool stars, molecular diagnostics of the internal structure of starspots and sunspots, and the effect of turbulent electric fields on the scattering polarization of hydrogen lines.
His site provides real-time maps and magnetograms
, with links to where the data come from.
Accurate spectroscopy, detailed comparisons of irradiance with magnetograms
, and the application of models such as the aforementioned field-dispersal model should allow us to recreate the solar magnetic field and the solar irradiance over time and compare it with historical weather records.