Effect of anisotropic collisions on solar scattering polarization

作     者：Saleh Qutub Moncef Derouich Badruddin Zaheer Ahmad Saleh Qutub;Moncef Derouich;Badruddin Zaheer Ahmad

作者机构：Astronomy and Space Science DepartmentFaculty of ScienceKing Abdulaziz UniversityJeddah 21589Saudi Arabia Sousse UniversityESSTHSLamine Abbassi Street4011 H.SousseTunisia 

出 版 物：《Research in Astronomy and Astrophysics》 (天文和天体物理学研究（英文版）)

年 卷 期：2021年第21卷第4期

页      面：149-156页

核心收录：

学科分类：07[理学] 070401[理学-天体物理] 0704[理学-天文学] 

基　　金：funded by the Deanship of Scientific Research(DSR)at King Abdulaziz University,Jeddah,under grant no.(G:348-1301440) DSR for technical and financial support 

主　　题：Scattering processes Line:formation-Polarization Sun:magnetic fields 

摘      要：Scattering of anisotropic radiation by atoms,ions or molecules is sufficient to generate linear polarization observable in stars and planets’atmospheres,circumstellar environments,and in particular in the Sun’s *** kind of polarization is called scattering polarization(SP)or second solar spectrum(SSS)if it is formed near the limb of the solar *** of linear SP can typically be reached more easily than circular ***,the latter is often absent in observations and *** by this,we propose to demonstrate how circular SP can be created by anisotropic collisions if a magnetic field is *** also demonstrate how anisotropic collisions can result in the creation of circular SP if the radiation field is *** show that under certain conditions,linear SP creation is accompanied by the emergence of circular SP which can be useful for diagnostics of solar and astrophysical *** treat an example and calculate the density matrix elements of tensorial order k=1 which are directly associated with the presence of circular *** work should encourage theoretical and observational research to be increasingly oriented towards circular SP profiles in addition to linear SP in order to improve our analysis tools of astrophysical and solar observations.