Decorrelation Time of Fourier modes in the Spectrum of Solar Background Velocity Fields

Details Decorrelation Time of Fourier modes in the Spectrum of Solar Background Velocity Fields Decorrelation Time of Fourier modes in the Spectrum of Solar Background Velocity Fields

May 1997

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997spd....28.0261c&link_type=abstract

American Astronomical Society, SPD meeting #28, #02.61; Bulletin of the American Astronomical Society, Vol. 29, p.904

Astronomy and Astrophysics

Astronomy

Scientific paper

We calculate the power-energy spectrum of time series of SOHO/MDI line-of sight high resolution Doppler images near disk center. While the spatial spectrum presents velocity features at characteristic scales and not a cascade in wavenumber space, we investigate the extent to which it is still possible to describe in terms of a scaling exponent the properties of the decorrelation time for each Fourier mode as a function of wavelength. We explore the sensitivity of the result to different methods for removing the contribution of the p-modes to the spectrum.

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