Volume 381, Number 1, JanuaryI 2002
|Page(s)||265 - 270|
|Section||Planets and planetary systems|
|Published online||15 January 2002|
An analysis of the vertical photospheric velocity field as observed by THEMIS*
Dipartimento di Fisica, Università della Calabria, 87036 Rende (CS), Italy
2 Istituto Nazionale per la Fisica della Materia, Unità di Cosenza, Italy
3 Dipartimento di Fisica, Univesità di L'Aquila, 67010 L'Aquila, Italy
4 Dipartimento di Fisica, Università di Roma “Tor Vergata”, 00133 Roma, Italy
5 Istituto di Fisica dello Spazio Interplanetario-CNR, 00133 Roma, Italy
6 Dipartimento di Difesa del Suolo, Università della Calabria, 87036 Rende (CS), Italy
Corresponding author: V. Carbone, email@example.com
Accepted: 10 April 2001
We propose the application of Proper Orthogonal Decomposition (POD) analysis to the photospheric vertical velocity field obtained through the data acquired by the THEMIS telescope, to recover a proper optimal basis of functions. As first results we found that four modes, which are energetically dominant, are nearly sufficient to reconstruct both the convective field and the field of the “5-min” oscillations.
Key words: Sun: photosphere / Sun: granulation / Sun: oscillations
© ESO, 2002
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