Experimental Testing of Scattering Polarization Models

Autor:	Li, W., Casini, R., Tomczyk, S., Degl'Innocenti, E. Landi, Marsell, B.
Rok vydání:	2018
Předmět:	Astrophysics - Solar and Stellar Astrophysics
Zdroj:	Astrophys. J. 2018, 867, L22
Druh dokumentu:	Working Paper
DOI:	10.3847/2041-8213/aaeb34
Popis:	We realized a laboratory experiment to study the scattering polarization of the Na I D-doublet at 589.0 and 589.6 nm in the presence of a magnetic field. This work was stimulated by solar observations of that doublet, which have proven particularly challenging to explain through available models of polarized line formation, even to the point of casting doubts on our very understanding of the underlying physics. The purpose of the experiment was to test a quantum theory for the polarized scattering of spectrally flat incident radiation, on which much of the current magnetic diagnostics of stellar atmospheres is based. The experiment has confirmed the predictions of that theory, and its adequacy for the modeling of scattering polarization under flat-spectrum illumination. Comment: 5 pages, 2 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1811.07090 Zobrazit plný text záznamu View this record from Arxiv