The observed background solar velocity noise

Jimenez, A.; Palle, P. L.; Perez Hernandez, F.; Regulo, C.; Roca-Cortés, T.
Referencia bibliográfica

Astronomy and Astrophysics (ISSN 0004-6361), vol. 192, no. 1-2, March 1988, p. L7-L9. CAICYT-supported research.

Fecha de publicación:
3
1988
Número de autores
5
Número de autores del IAC
5
Número de citas
33
Número de citas referidas
28
Descripción
Using accurate radial velocity observations of integral sunlight, the background solar velocity noise has been measured at different frequencies of interest for solar oscillations within a frequency interval between 10-7 and 10-2Hz. Comparison with a numerical model, simulating the most important solar processes: granulation, mesogranulation, supergranulation and active regions, with associated velocity fields shows good agreement at the amplitudes and their, already known, characteristic time scales.