Bibcode
Landi Degl'Innocenti, Egidio
Referencia bibliográfica
In: Solar observations: Techniques and interpretation (A93-53183 23-92), p. 71, 73-143.
Fecha de publicación:
0
1992
Número de citas
57
Número de citas referidas
50
Descripción
Techniques involved in measurements of solar magnetic field are based on
the observation and interpretation of the polarization signal in
suitable Fraunhofer lines. This paper discusses some facts about
polarized radiation, the physical concepts underlying such measurements,
and the techniques involved. Particular attention is given to the
operating principles of polarimeters used in magnetic field
measurements; the physical components of polarimeters; and the
polarization phenomena, such as absorption, emission, and scattering, in
a spectral line. Consideration is also given to the transfer of
polarized radiation in a magnetized medium, line formation in a magnetic
field, transfer equations for the Stokes parameters in a magnetized
atmosphere; and solutions of the transfer equations and magnetic field
measurements. Finally, methods for magnetic field measurements in
unresolved structures and in prominences are described.