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Astron. Astrophys. 358, L75-L78 (2000)

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Letter to the Editor

Energy considerations for solar prominences with mass inflow

U. Anzer 1 and P. Heinzel 2,1

1 Max-Planck-Institut für Astrophysik, Karl-Schwarzschild-Strasse 1, 85741 Garching, Germany
2 Astronomical Institute, Academy of Sciences of the Czech Republic, CZ-25165 Ondejov, Czech Republic

Received 27 April 2000 / Accepted 15 May 2000

Abstract

In this Letter we study the inflow of enthalpy and ionisation energy into solar prominences. We use 1D stationary slab models for the prominence to calculate this inflow. We compare the resulting energy gain with the integrated radiative losses obtained for such slab models. We find that for reasonable inflow velocities many of our models can be in energy equilibrium; only the very massive prominences will either require some additional heating or they have to cool down to low central temperatures. We also discuss the possibility or heating the prominence by vertical downflows.

Key words: book reviews – radiative transfer – Sun: prominences – Sun: transition region

Send offprint requests to: U. Anzer (ula@mpa-garching.mpg.de)

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© European Southern Observatory (ESO) 2000

Online publication: June 20, 2000
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