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New Evidence of Chromospheric Evaporation

Published online by Cambridge University Press:  12 April 2016

J. Kašparová ,
P. Kotrč ,
P. Heinzel ,
I.F. Nikulin  and
P. Rudawy
J. Kašparová
Affiliation:
Astronomical Institute of the Academy of Sciences of Czech Republic, CZ-251 65 Ondřejov, Czech Republic
P. Kotrč
Affiliation:
Astronomical Institute of the Academy of Sciences of Czech Republic, CZ-251 65 Ondřejov, Czech Republic
P. Heinzel
Affiliation:
Astronomical Institute of the Academy of Sciences of Czech Republic, CZ-251 65 Ondřejov, Czech Republic
I.F. Nikulin
Affiliation:
Sternberg Astronomical Institute, RU-119899 Moscow, Russia
P. Rudawy
Affiliation:
Astronomical Institute of the Wroclaw University, PL-51 622 Wroclaw, Poland

Abstract

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Hα spectra obtained at Sternberg Astronomical Institute in Moscow during the gradual phase of the flare on May 16, 1981 are analysed. The flare-ribbon profiles show a red asymmetry of the emission peaks, and we interpret this as an absorption in the blue wing of the profile due to expected upflows. We demonstrate a good correlation between the observed Hα profiles and those computed with the flare model Fl and upflows reaching 10 km s−1.

Type
Birth and Death of Filaments
Information
International Astronomical Union Colloquium , Volume 167: New Perspectives on Solar Prominences , 1998 , pp. 397 - 400
Copyright
Copyright © Astronomical Society of the Pacific 1998

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