Bibcode
Asensio Ramos, Andrés; Trujilo-Bueno, J.; Landi Degl'Innocenti, E.
Referencia bibliográfica
Astrophysics Source Code Library, record ascl:1109.004
Advertised on:
9
2011
Número de citas
2
Número de citas referidas
2
Descripción
A big challenge in solar and stellar physics in the coming years will be
to decipher the magnetism of the solar outer atmosphere (chromosphere
and corona) along with its dynamic coupling with the magnetic fields of
the underlying photosphere. To this end, it is important to develop
rigorous diagnostic tools for the physical interpretation of
spectropolarimetric observations in suitably chosen spectral lines.
HAZEL is a computer program for the synthesis and inversion of Stokes
profiles caused by the joint action of atomic level polarization and the
Hanle and Zeeman effects in some spectral lines of diagnostic interest,
such as those of the He I 1083.0 nm and 587.6 nm (or D3) multiplets. It
is based on the quantum theory of spectral line polarization, which
takes into account in a rigorous way all the relevant physical
mechanisms and ingredients (optical pumping, atomic level polarization,
level crossings and repulsions, Zeeman, Paschen-Back and Hanle effects).
The influence of radiative transfer on the emergent spectral line
radiation is taken into account through a suitable slab model. The user
can either calculate the emergent intensity and polarization for any
given magnetic field vector or infer the dynamical and magnetic
properties from the observed Stokes profiles via an efficient inversion
algorithm based on global optimization methods.