Ground-based measurements of solar intensity oscillations

Details Ground-based measurements of solar intensity oscillations Ground-based measurements of solar intensity oscillations

Jan 1987

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1987a%26a...172..323j&link_type=abstract

Astronomy and Astrophysics (ISSN 0004-6361), vol. 172, no. 1-2, Jan. 1987, p. 323-326. CAICYT-supported research.

Astronomy and Astrophysics

Astrophysics

19

Solar Constant, Solar Oscillations, Space Observations (From Earth), Astronomical Photometry, Solar Spectra

Scientific paper

Ground-based multichannel photometry of integral sunlight has been obtained at Izaña (Tenerife) during three months in 1984 with a photometer built at ESTEC. Power spectra of solar irradiance variations of individual days show power in the 5 min band just above noise at a level comparable to the one found from the SMM data (Woodard and Hudson, 1983). Previous similar ground work had never achieved the signal level required at the 5 min interval. When combining the best 7 contiguous days of data, the signature of p mode solar oscillations spectra appears, but individual identification is difficult due to a low signal-to-noise ratio.

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