Abstracts Details


First Name * : Supriya
Last Name * : Hebbur Dayananda
Affiliation * : Instituto de Astrofísica de Canarias
Abstract Type * : Poster
Title * : The polarization of the Lyman-$\alpha$ lines of H {\sc i} and He {\sc ii} in the solar corona
Author(s) * : Supriya Hebbur Dayananda, Javier Trujillo Bueno, Tanausu del Pino Aleman, Angel de Vicente Garrido
Abstract Session * : Science with future facilities
Abstract * : The solar corona is the outermost region of the extended solar atmosphere where the quick release of magnetic free energy determines the near-Earth space weather. Probing this extremely hot and rarified plasma requires modeling the polarization of forbidden and permitted coronal lines, and to this end it is crucial to develop efficient codes to compute the Stokes profiles that emerge from given 3D coronal models taking into account the symmetry breaking produced by the presence of magnetic fields and non-radial solar wind velocities. We are developing such a tool with the aim of doing theoretical predictions as well as interpretations of spectropolarimetric observations (e.g., those that DKIST and ADITYA L1 will hopefully provide). In this presentation we show the results of a theoretical investigation of the linear polarization produced by scattering processes in the H {\sc i} Ly-$\alpha$ at 1216 \AA{} and in the He {\sc ii} Ly-$\alpha$ at 304 \AA{}, using 3D coronal models by ``Predictive Science Inc.