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On the nature of the prominence - corona transition region

Published online by Cambridge University Press:  06 January 2014

Susanna Parenti  and
Jean-Claude Vial
Susanna Parenti
Affiliation:
Royal Observatory of Belgium - STCE, 3 Av. Circulaire, Brussels, Belgium email: [email protected]
Jean-Claude Vial
Affiliation:
Institut d'Astrophysique Spatiale, Université Paris Sud - CNRS, Orsay Cedex, France email: [email protected]
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Abstract

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Due to the complexity of their environment, prominences properties are still a matter of controversy. Prominences cool and dense plasma is suspended in the hot corona by a magnetic structure poorly known. Their thermal insulation from the corona results in a thin geometrical interface called prominence-corona-transition-region (PCTR). Here we will review the main properties of such a region as derived primarily from observations. We will introduce the thermal structure properties, describe the fine structure together with the Doppler-shift and width properties of lines of the emitting plasma. We will introduce the proposed interpretations of such observations and the limits of our knowledge imposed by the present instrumentation. We will conclude with a perspective for the future observations of the PCTR.

Keywords

prominencesUV-EUVtransition regionspectroscopy
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 8 , Symposium S300: Nature of Prominences and their role in Space Weather , June 2013 , pp. 69 - 78
Copyright
Copyright © International Astronomical Union 2013 

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