Title :
Wavelet decomposition of global solar oscillations
Author :
Hanssen, Alfred ; Leifsen, T. ; Andersen, B.N. ; Toutain, T.
Author_Institution :
Dept. of Phys., Tromso Univ., Norway
Abstract :
The authors have calculated the wavelet transform of so-called helio-seismological data from the IPHIR experiment onboard the Soviet Phobos spacecraft. The mother wavelet was a modified Morlet-Grossmann wavelet. The results show that the solar oscillations have a non-stationary character, with global oscillation modes being excited and damped out at apparently random times
Keywords :
astronomical techniques; astronomy; astronomy computing; solar pulsations; spectral analysis; wavelet transforms; IPHIR experiment; Phobos spacecraft; Sun; global oscillation modes; global solar oscillations; helio-seismological data; modified Morlet-Grossmann wavelet; mother wavelet; nonstationary character; random times; wavelet transform; Astrophysics; Data analysis; Extraterrestrial measurements; Fourier transforms; Frequency; Physics; Space vehicles; Wavelet analysis; Wavelet domain; Wavelet transforms;
Conference_Titel :
Time-Frequency and Time-Scale Analysis, 1994., Proceedings of the IEEE-SP International Symposium on
Conference_Location :
Philadelphia, PA
Print_ISBN :
0-7803-2127-8
DOI :
10.1109/TFSA.1994.467341
