Importance of the Hα Visibility and Projection Effects for the Interpretation of Prominence Fine-structure Observations

0497534 - ASÚ 2019 RIV US eng J - Journal Article
Gunár, Stanislav - Dudík, Jaroslav - Aulanier, G. - Schmieder, B. - Heinzel, Petr
Importance of the Hα Visibility and Projection Effects for the Interpretation of Prominence Fine-structure Observations.
Astrophysical Journal. Roč. 867, č. 2 (2018), č. článku 115. ISSN 0004-637X. E-ISSN 1538-4357
R&D Projects: GA ČR(CZ) GA16-17586S
Institutional support: RVO:67985815
Keywords : magnetic fields * numerical methods * filaments
OECD category: Astronomy (including astrophysics,space science)
Impact factor: 5.580, year: 2018

We construct a new 3D Whole-prominence Fine-structure (WPFS) model based on a prominence magnetic field configuration designed to qualitatively approximate the morphology of a quiescent prominence observed on 2010 June 22. The model represents an entire prominence with its numerous fine structures formed by a prominence plasma located in dips in the prominence magnetic field. We use the constructed 3D model and employ a radiative-transfer-based Hα visualization method to analyze the Hα visibility of prominence fine structures and its effect on the perceived morphology of observed and modeled prominences. We qualitatively compare three techniques used for visualization of modeled prominences—visualizations drawing magnetic dips up to a height of 1 pressure scale height, drawing the full extent of magnetic dips, and the synthetic Hα visualization—and discuss their suitability for direct comparison between models and observations of prominences and filaments.
Permanent Link: http://hdl.handle.net/11104/0290092