2005/10/26 by A. Pietarila, H. Socas‐Navarro, H. Socas-Navarro +4 · 1 citation
Engineering · Physics and Astronomy · #Optical Polarization and Ellipsometry #Solar and Space Plasma Dynamics #Stellar, planetary, and galactic studies #astro-ph
paper · pdf · doi:10.1086/500240
published as Astrophys.J.640:1142-1152,2006 · Submitted to ApJ
arxiv created 2005/10/26 · openalex publication_date 2006/03/27 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/31
The Ca II infrared triplet lines around 8540 Å are good candidates for observing chromospheric magnetism. Model spectra of these lines are obtained by combining a radiation hydrodynamic simulation with a Stokes synthesis code. The simulation shows interesting time-varying behavior of the Stokes V profiles as waves propagate through the formation region of the lines. Disappearing and reappearing lobes in the Stokes V profiles as well as profile asymmetries are closely related to the atmospheric velocity gradients.