Bibcode
González Hernández, I.; Patrón, J.
Referencia bibliográfica
Solar Physics, v. 191, Issue 1, p. 37-46 (2000).
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1
2000
Revista
Número de citas
7
Número de citas referidas
7
Descripción
The solar rotation rate at latitudes 0 deg, 15 deg and 30 deg has been
inferred by averaging the results of 120 regions of 15 degx15 deg, which
have been studied over a total area of about 75 deg in latitude and 360
deg in longitude. A local helioseismology technique, the ring diagram
analysis method, has been used to analyse the horizontal velocity
vectors from about 0.95 R_solar up to the surface. Our results are in
very good agreement with those of other authors over most of the depth
range. However, near the surface we find sharp local features which are
not reported in other studies. The independent measurements of the
rotation rate in the north and south hemispheres show asymmetries below
0.975 R_solar. The data used are full-disc dopplergrams taken by Solar
Oscillation Investigation/Michelson Doppler Imager (SOI/MDI) on board of
the SOlar and Heliospheric Observatory (SOHO) during its first Dynamic
Program, between 1996 May and June.