Computer Science
Scientific paper
Nov 1984
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1984esasp.220...17f&link_type=abstract
In ESA The Hydromagnetics of the Sun p 17-20 (SEE N85-25091 14-92)
Computer Science
5
Helioseismology, Solar Constant, Solar Oscillations, Velocity Distribution, Balloon-Borne Instruments, Bivariate Analysis, Solar Spectra, Time Series Analysis
Scientific paper
The results of 7 hr of solar spectral irradiance measurements from a stratospheric balloon are analyzed for frequencies between 1 and 5 mHz. Significant peaks of up to 6 parts per million (ppm) in the red (778 nm) and up to 15 ppm in the blue (380 nm) can be identified as 5 min p-mode oscillations of the Sun. From bivariate time series analysis a constant relative phase close to 0 and an amplitude ratio between 1.5 and 3.2 with a maximum around 3 mHz is found. The spectra are also compared with simultaneous velocity measurements. The bivariate analysis yields a phase difference between the velocity and irradiance signals of 120 to 180 deg and amplitude ratios of 15 and 50 ppm/m/sec for the red and blue respectively.
Fröhlich Carla
Vanderraay H. B.
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