Bibcode
Garcia, C.; Palle, Pere L.; Roca Cortés, Teodoro
Referencia bibliográfica
In ESA, Seismology of the Sun and Sun-Like Stars p 353-357 (SEE N89-25819 19-92)
Fecha de publicación:
12
1988
Número de citas
4
Número de citas referidas
3
Descripción
The question of whether or not solar g-modes can be detected and
identified from ground observations is addressed. The limitation imposed
by the Earth's atmosphere, the background solar noise spectrum at low
frequencies, and a poor theoretical knowledge of these modes are
mentioned. Using the best uninterrupted full disk velocity measurements
obtained over the period 1984 to 1987, signals with amplitudes less than
5 cm/s are found in the g-modes spectral region. Cross-correlation and
other techniques used to detect stable signals (g-modes) show negative
results which allow an upper limit to their amplitudes and/or lifetimes
to be defined.