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The New Chromosphere

Published online by Cambridge University Press:  08 February 2017

Mats Carlsson  and
Robert F. Stein
Mats Carlsson
Affiliation:
Institute of Theoretical Astrophysics, P.O. Box 1029 Blindern, N-0315 Oslo, Norway
Robert F. Stein
Affiliation:
Department of Physics & Astronomy, Michigan State University, East Lansing, MI 48824, USA

Abstract

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The natural state of the Solar chromosphere is very dynamic. Any photospheric disturbance will grow and naturally form shocks over the twenty scale-heights in density between the photosphere and the corona. Observations in the resonance lines from singly ionized calcium and recently in the ultraviolet region of the spectrum observed with the Solar and Heliospheric Observatory satellite also show a very dynamic chromosphere. This dynamic picture is further supported by numerical simulations. Static and dynamic pictures of the chromosphere are fundamentally different. The simulations also show that time variations are crucial for our understanding of the chromosphere itself and for the spectral features formed there.

Type
VII. The Solar Atmosphere
Information
Symposium - International Astronomical Union , Volume 185: New Eyes to See Inside the Sun and Stars , 1998 , pp. 435 - 446
Copyright
Copyright © Kluwer 1998 

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