Abstract
Spatial leakage is an unavoidable artifact in the extraction of solar oscillation modes by spheric harmonic decomposition from the wavefield observed on the solar surface. The determination of solar frequencies by spectral analysis is therefore greatly affected by spatial leakage. Here we show in which way spatial leakage also influences the cross-spectra between different solar oscillation modes. Simulations show that spatial leakage induces significant coherences between oscillations of degree l and l + 2 with low azimuthal order m.
Original language | English |
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Title of host publication | Proceedings of the Second HELAS International Conference |
Editors | L Gizon, M Roth |
Place of Publication | Bristol |
Publisher | IOP Publishing Ltd. |
Pages | 12091-12091 |
Number of pages | 5 |
Volume | 118 |
DOIs | |
Publication status | Published - 2008 |
Event | International Conference on Helioseismology, Asteroseismology and MHD Connections (HELAS II) - Gottingen Duration: 20 Aug 2007 → 24 Aug 2008 |
Conference
Conference | International Conference on Helioseismology, Asteroseismology and MHD Connections (HELAS II) |
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City | Gottingen |
Period | 20/08/07 → 24/08/08 |