Delo-bezier formal solutions of the polarized radiative transfer equation
2013 (English)In: Astrophysical Journal, ISSN 0004-637X, E-ISSN 1538-4357, Vol. 764, no 1, 33- p.Article in journal (Refereed) Published
We present two new accurate and efficient methods to compute the formal solution of the polarized radiative transfer equation. In this work, the source function and the absorption matrix are approximated using quadratic and cubic Bezier spline interpolants. These schemes provide second- and third-order approximations, respectively, and do not suffer from erratic behavior of the polynomial approximation (overshooting). The accuracy and the convergence of the new method are studied along with other popular solutions of the radiative transfer equation, using stellar atmospheres with strong gradients in the line-of-sight velocity and in the magnetic-field vector.
Place, publisher, year, edition, pages
2013. Vol. 764, no 1, 33- p.
line: profiles, magnetic fields, polarization, radiative transfer, stars: atmospheres
IdentifiersURN: urn:nbn:se:uu:diva-196533DOI: 10.1088/0004-637X/764/1/33ISI: 000314335200033OAI: oai:DiVA.org:uu-196533DiVA: diva2:610854