Bibcode
Baudin, F.; González Hernández, I.; Patron, J.; SOI Ring Diagrams
Referencia bibliográfica
Structure and Dynamics of the Interior of the Sun and Sun-like Stars SOHO 6/GONG 98 Workshop Abstract, June 1-4, 1998, Boston, Massachusetts, p. 721
Advertised on:
0
1998
Número de citas
1
Número de citas referidas
1
Descripción
In order to compare the use of the classical Fourier Transform and the
Homomorphic Deconvolution (HD), ring diagram analysis using both
techniques has been applied to a time series of a solar section to
obtain the 3-dimensional power spectrum (kx - ky -
ω). The series has a total span of 1536 minutes and the section
covers about 15 times 15 degrees over the solar surface. The use of HD
was expected to yield more precise results due to its adequation to
non-stationary signals as those of solar p-modes. The spectra have been
fitted in the frame of ring diagram analysis in order to get the
horizontal velocities as a function of frequency. These results are
quantitatively compared. Finally, both results were inverted to infer
the depth dependence of the velocities.