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

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 Zusammenfassung: 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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Sprache(n): eng - English
 Datum: 2019
 Publikationsstatus: Online veröffentlicht
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1051/0004-6361/201936027
arXiv: 1906.09125
ADS: 2019A&A...627L...5C
 Art des Abschluß: -

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Titel: Astronomy and Astrophysics
  Andere : Astron. Astrophys.
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Les Ulis Cedex A France : EDP Sciences
Seiten: - Band / Heft: 627 Artikelnummer: L5 Start- / Endseite: - Identifikator: Anderer: 1432-0746
ISSN: 0004-6361
CoNE: https://pure.mpg.de/cone/journals/resource/954922828219_1