Average effects of large-scale convection on helioseismic line widths and frequencies

Details Average effects of large-scale convection on helioseismic line widths and frequencies Average effects of large-scale convection on helioseismic line widths and frequencies

Feb 1993

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1993apj...403..810l&link_type=abstract

Astrophysical Journal, Part 1 (ISSN 0004-637X), vol. 403, no. 2, p. 810-832.

Astronomy and Astrophysics

Astronomy

13

Helioseismology, Solar Convection (Astronomy), Spectral Line Width, Legendre Functions, Line Spectra, Mathematical Models, Perturbation Theory, Power Spectra, Signal To Noise Ratios

Scientific paper

The formalism of Lavely and Ritzwoller (1992) is here applied to the model of stationary large-scale solar convection developed by Glatzmaier (1984) in order to determine a characteristic giant-cell convection signature in helioseismic data. Frequency and line-width measurements are presented on spatially filtered spectra, so that references to azimuthal orders apply to the m-value of the spatial filter's spherical harmonic. Attention is given to the 'Q-bowl' pattern of large-scale convection, a systematic, apparent line-broadening.

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