2008/09/22 by K. H. Nordsieck, Kenneth Nordsieck, Nordsieck, Kenneth · 1 citation
Physics and Astronomy · #Astro and Planetary Science #Astrophysics (astro-ph) #Astrophysics and Star Formation Studies #FOS: Physical sciences #Stellar, planetary, and galactic studies #astro-ph
paper · pdf · doi:10.48550/arxiv.0809.3802
5 pages, 3 eps figures; to be published in: Astronomical Polarimetry 2008: Science from Small to Large Telescopes, ASP Conference Series, Vol. 4**, 2009, ed: Bastien and Manset
arxiv created 2008/09/22 · openalex publication_date 2008/09/22 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Yan and Lazarian have proposed a new technique through which the magnetic field geometry in the diffuse interstellar medium, or in circumstellar matter, could be determined from the linear polarization of interstellar absorption or fluorescence emission lines from ions pumped by an anisotropic illuminating flux. New long-slit spectroscopic observations of the reflection nebula NGC2023, obtained with the Southern African Large Telescope Robert Stobie Spectrograph (RSS), have detected a number of atomic fluorescence lines of OI, NI, SiII, and FeII for the first time in a neutral medium. A model which predicts these lines and others illustrates which lines would be appropriate targets for an RSS spectropolarimetric investigation of this new diagnostic.