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High frequency oscillations in the solar chromosphere and their connection with heating

Published online by Cambridge University Press:  01 September 2007

Aleksandra Andic ,
M. Mathioudakis ,
F. P. Keenan ,
D. B. Jess  and
D. S. Bloomfield
Aleksandra Andic
Affiliation:
Queen's University Belfast, University Road, Belfast, BT7 1NN, UK email: [email protected]
M. Mathioudakis
Affiliation:
Queen's University Belfast, University Road, Belfast, BT7 1NN, UK email: [email protected]
F. P. Keenan
Affiliation:
Queen's University Belfast, University Road, Belfast, BT7 1NN, UK email: [email protected]
D. B. Jess
Affiliation:
Queen's University Belfast, University Road, Belfast, BT7 1NN, UK email: [email protected] NASA Goddard Space Flight Center, Soar Physics Laboratory Code 612, Greenbelt, MD 20771USA
D. S. Bloomfield
Affiliation:
Max Planck Institut fuer Sonnensystemforshung, Max-Planck-Str.2, 37191 Katlenburg-Lindau, Germany
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Abstract

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High frequency acoustic waves have been suggested as a source of mechanical heating in the quiet solar chromosphere. To investigate this, we have observed intensity oscillations of several lines in the frequency interval 1.64-70mHz using data from the VTT Tenerife and the Dunn Solar Telescope at the National Solar Observatory. Our analysis of Fe i 543.45 nm, Fe i 543.29 nm and the G-band, indicate that the majority of oscillations are connected with the magnetic fields and do not provide sufficient mechanical flux for the heating of the chromosphere. This correlation is also observed in quiet Sun areas.

Keywords

oscillationsheatingchromosphere
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 3 , Symposium S247: Waves & Oscillations in the Solar Atmosphere: Heating and Magneto-Seismology , September 2007 , pp. 312 - 315
Copyright
Copyright © International Astronomical Union 2008

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