Determination of the line structure in solar p-mode frequency spectra. IPHIR data analysis.

Details Determination of the line structure in solar p-mode frequency spectra. IPHIR data analysis. Determination of the line structure in solar p-mode frequency spectra. IPHIR data analysis.

Jun 1996

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996a%26a...310..651g&link_type=abstract

Astronomy and Astrophysics, v.310, p.651-660

Astronomy and Astrophysics

Astrophysics

17

Sun: Oscillations, Rotation, Methods: Data Analysis

Scientific paper

We discuss some modifications of the Fourier transform technique which can help to resolve the line structure of solar p-modes. This method is tested using artificial data as well as IPHIR data and its ability to reveal the line shapes is shown. The line profiles of low l (0,1,2) p-modes revealed from IPHIR data (the green and the red channels) for the radial order n from 15 to 26 are presented. The obtained line shapes clearly manifest a strong asymmetry in the amplitudes between the components with different m in the rotationally splitted multiplets. There is an example where only one component (l=1, n=22, m=1) is visible.

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