太阳散射偏振研究进展

发布时间：2018-05-06 06:10

本文选题：太阳磁场 + 汉勒效应　；参考：《天文学进展》2014年04期

【摘要】：太阳磁场的诊断对研究太阳物理有着重要的意义。近几十年,许多科学家利用汉勒效应(Hanle effect)进行诊断弱磁场的研究。而利用汉勒效应诊断弱磁场,需要对偏振的产生机制有一个完整的理解。直到近年来,随着技术的发展,对偏振的测量精度达到10~(-5)的ZIMPOL(Zurich Imaging Polarimeter)获得以斯托克斯参量Q/I为表征的第二太阳光谱(second solar spectrum),展现丰富的散射偏振特征,促进了偏振研究的蓬勃发展。通过对第二太阳光谱的研究,使我们对偏振产生机制理解得更为透彻,从而使利用汉勒效应诊断弱磁场逐渐成为可能。主要介绍了用量子电动力学为基础的密度矩阵来研究偏振光谱产生的物理过程,并简要介绍了近年有关在第二太阳光谱和汉勒效应研究的一些进展。
[Abstract]:The diagnosis of solar magnetic field is of great significance to the study of solar physics. In recent decades, many scientists have used the Hanle effect to diagnose weak magnetic fields. In order to diagnose the weak magnetic field by using the Hanler effect, we need to have a complete understanding of the mechanism of polarization. In recent years, with the development of technology, the second solar spectrum characterized by Stokes parameter Q / I has been obtained by ZIMPOL(Zurich Imaging Polarimeter, where the measurement precision of polarization is up to 10 ~ 5), which shows rich scattering polarization characteristics and promotes the vigorous development of polarization research. Through the study of the second solar spectrum, we have a better understanding of the mechanism of polarization, which makes it possible to diagnose the weak magnetic field by using the Hanler effect. In this paper, the physical process of polarizing spectrum is studied based on the density matrix based on quantum electrodynamics, and some recent advances in the study of the second solar spectrum and the Hansel effect are briefly introduced.
【作者单位】：中国科学院云南天文台;中国科学院大学;
【基金】：国家自然科学基金(11078005,11373065) 973项目(G2011CB811400)
【分类号】：P182.7

【共引文献】