Prominence observations with ALMA

Heinzel, P., Bárta, M., Gunár, S., Labrosse, N. and Vial, J.-C. (2022) Prominence observations with ALMA. Frontiers in Astronomy and Space Sciences, 9, 983707. (doi: 10.3389/fspas.2022.983707)

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This review comes at the time when ALMA successfully obtained the first regular observations of both a prominence and a filament. These observations have a spatial resolution of 1-2 arcsec, far better than previous prominence observations in the mm/sub-mm radio domain. The achieved resolution is compatible with the cotemporal ground-based coronagraphic observations in the hydrogen Hα line that accompany the ALMA Band 3 prominence observations. A core part of this review is the description and analysis of these pioneering ALMA observations of a quiescent prominence, focusing on various physical and geometrical properties of the observed prominence fine structures. We also summarize the basic physical processes behind the formation of mm/sub-mm continua under prominence conditions and describe the plasma diagnostics potential of ALMA solar observations. Finally, we discuss future prospects of ALMA prominence observations and the value of coordinated optical and UV spectra and images.

Item Type:Articles
Additional Information:SG and PH acknowledge support by the grant 19-16890S and 19-17102S of the Czech Science Foundation (GA ČR) and by the project RVO:67985815 of the Astronomical Institute of the Czech Academy of Sciences. MB acknowledges support by the grants 20-09922J and 21-16808J of the Czech Science Foundation, and by the project LM2015067 from the Ministry of education of the Czech Republic. Support from STFC grant ST/T000422/1 (NL) is also gratefully acknowledged. This work was partially supported by the program ‘Excellence Initiative–Research University’ for years 2020-2026 at the University of Wrocław, Poland.
Keywords:Prominences, mm/sub-mm observations, ALMA, plasma diagnostics, temperature structure.
Glasgow Author(s) Enlighten ID:Labrosse, Dr Nicolas
Authors: Heinzel, P., Bárta, M., Gunár, S., Labrosse, N., and Vial, J.-C.
College/School:College of Science and Engineering > School of Physics and Astronomy
Journal Name:Frontiers in Astronomy and Space Sciences
Publisher:Frontiers Media
ISSN (Online):2296-987X
Copyright Holders:Copyright © 2022 Heinzel, Bárta, Gunár, Labrosse and Vial
First Published:First published in Frontiers in Astronomy and Space Sciences 9: 983707
Publisher Policy:Reproduced under a Creative Commons License

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Project CodeAward NoProject NamePrincipal InvestigatorFunder's NameFunder RefLead Dept
306515PHAS A&A Group STFC ConsolidatedLyndsay FletcherScience and Technology Facilities Council (STFC)ST/T000422/1P&S - Physics & Astronomy