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  Hot prominence spicules launched from turbulent cool solar prominences

Chitta, L. P., Peter, H., & Li, L. (2019). Hot prominence spicules launched from turbulent cool solar prominences. Astronomy and Astrophysics, 627: L5. doi:10.1051/0004-6361/201936027.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0005-7C4E-A Version Permalink: http://hdl.handle.net/21.11116/0000-0005-7C57-F
Genre: Journal Article

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 Creators:
Chitta, L. P.1, Author              
Peter, Hardi1, Author              
Li, L., Author
Affiliations:
1Department Sun and Heliosphere, Max Planck Institute for Solar System Research, Max Planck Society, ou_1832289              

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 Abstract: A solar filament is a dense cool condensation that is supported and thermally insulated by magnetic fields in the rarefied hot corona. Its evolution and stability, leading to either an eruption or disappearance, depend on its coupling with the surrounding hot corona through a thin transition region, where the temperature steeply rises. However, the heating and dynamics of this transition region remain elusive. We report extreme-ultraviolet observations of quiescent filaments from the Solar Dynamics Observatory that reveal prominence spicules propagating through the transition region of the filament-corona system. These thin needle-like jet features are generated and heated to at least 0.7 MK by turbulent motions of the material in the filament. We suggest that the prominence spicules continuously channel the heated mass into the corona and aid in the filament evaporation and decay. Our results shed light on the turbulence-driven heating in magnetized condensations that are commonly observed on the Sun and in the interstellar medium.

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Language(s): eng - English
 Dates: 2019
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Method: Peer
 Identifiers: DOI: 10.1051/0004-6361/201936027
arXiv: 1906.09125
ADS: 2019A&A...627L...5C
 Degree: -

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Title: Astronomy and Astrophysics
  Other : Astron. Astrophys.
Source Genre: Journal
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Publ. Info: Les Ulis Cedex A France : EDP Sciences
Pages: - Volume / Issue: 627 Sequence Number: L5 Start / End Page: - Identifier: Other: 1432-0746
ISSN: 0004-6361
CoNE: https://pure.mpg.de/cone/journals/resource/954922828219_1