Confirmation of the detection and classification of low-order, low-degree solar acoustic modes with the 1978 solar diameter observations

Journal Article · Sun Dec 01 04:00:00 EST 1985 · Astrophys. J.; (United States)

DOI:https://doi.org/10.1086/163719· OSTI ID:6099896

Hill, H A; Caudell, T P

The 1978 solar diameter observations of Caudell et al. (1980) have been examined for evidence of the low-order, low-degree acoustic modes found by Hill (1984) in the 1979 observations of Bos and Hill (1983). The 1978 power spectrum was tested for evidence of (1) a nonrandom distribution of peaks relative to the eigenfrequency spectrum found by Hill (1984), (2) spatial symmetry properties of the eigenfunctions for the modes classified by Hill (1984), and (3) a theta-dependence, specified by angular order m, of the amplitudes of oscillations for these same modes. The characterization of the symmetry properties of the eigenfunctions and the values of m were taken from the work of Hill (1984). The findings of these three tests confirm the detection of modes and their classifications as given by Hill (1984). These three tests are independent of each other and, when combined, furnish a confirmation of considerable statistical significance. In addition, these modes are found to be randomly excited; the average intrinsic line widths for the n = 1, l = 6, 8, 10, and 12 modes are > or =0.01 ..mu..Hz.

• Research Organization: Department of Physics and Arizona Research Laboratories, University of Arizona, Tucson
• OSTI ID: 6099896
• Journal Information: Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 299:1; ISSN ASJOA
• Country of Publication: United States
• Language: English

Related Subjects

640104* -- Astrophysics & Cosmology-- Solar Phenomena
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
DISTRIBUTION
EIGENFREQUENCY
EIGENFUNCTIONS
FUNCTIONS
GAUSS FUNCTION
MAIN SEQUENCE STARS
OSCILLATION MODES
OSCILLATIONS
PROBABILITY
SOUND WAVES
SPECTRA
STARS
SUN
ZEEMAN EFFECT