71 citations · 875 across the 55 of their papers we have counts for
8 papers · 1 filter
The polarization angle in the wings of Ca i 4227: A new observable for diagnosing unresolved photospheric magnetic fields
Emilia Capozzi, Ernest Alsina Ballester, Luca Belluzzi +1
When observed in quiet regions close to the solar limb, many strong resonance lines show conspicuous linear polarization signals, produced by scattering processes, with extended wi…
Modeling the scattering polarization of the solar Ca i 4227 Å line with angle-dependent partial frequency redistribution
Gioele Janett, Ernest Alsina Ballester, Nuno Guerreiro +4
Context. The correct modeling of the scattering polarization signals observed in several strong resonance lines requires taking partial frequency redistribution (PRD) phenomena int…
A novel fourth-order WENO interpolation technique. A possible new tool designed for radiative transfer
Gioele Janett, Oskar Steiner, Ernest Alsina Ballester +2
Context. Several numerical problems require the interpolation of discrete data that present various types of discontinuities. The radiative transfer is a typical example of such a…
Numerical solutions to linear transfer problems of polarized radiation II. Krylov methods and matrix-free implementation
Pietro Benedusi, Gioele Janett, Luca Belluzzi +1
Context. Numerical solutions to transfer problems of polarized radiation in solar and stellar atmospheres commonly rely on stationary iterative methods, which often perform poorly…
Numerical solutions to linear transfer problems of polarized radiation I. Algebraic formulation and stationary iterative methods
Gioele Janett, Pietro Benedusi, Luca Belluzzi +1
Context. The numerical modeling of the generation and transfer of polarized radiation is a key task in solar and stellar physics research and has led to a relevant class of discret…
Solving the paradox of the solar sodium D1 line polarization
Ernest Alsina Ballester, Luca Belluzzi, Javier Trujillo Bueno
Twenty-five years ago, enigmatic linear polarization signals were discovered in the core of the sodium D1 line. The only explanation that could be found implied that the solar chro…