Preparation of a second station for the measurement of solar oscillations of low degree 'l'

Details Preparation of a second station for the measurement of solar oscillations of low degree 'l' Preparation of a second station for the measurement of solar oscillations of low degree 'l'

Feb 1990

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990ncimc..13..163c&link_type=abstract

Nuovo Cimento C, Serie 1 (ISSN 0390-5551), vol. 13 C, Jan.-Feb. 1990, p. 163-168.

Computer Science

Sound

Magneto-Optics, Solar Observatories, Solar Oscillations, P Waves, Solar Interior, Solar Spectra, Sound Waves

Scientific paper

An observing station to detect low-degree global solar oscillations is already operational at the Jet Propulsion Laboratory. A second station for continuative measurements of such oscillations has recently been installed and successfully tested in Rome. The high transmission and stability of the magneto-optical filter (MOF) coupled with the lock-in amplifier technique allow analog and real-time detection of oscillation modes with a noise level of only a few cm/s. Observing runs and estimates of the signal-to-noise ratio are shown in time and frequency domains. Routine observations will establish whether the MOF sensitivity and stability are suitable for the detection of stellar oscillations.

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