Detection and classification of resolved multiplet members of the solar 5 minute oscillations through solar diameter-type observations
Journal Article
·
· Astrophys. J.; (United States)
Individual modes of low-degree 5 minute oscillations have been identified in solar diameter observations. These modes have n-values in the range 12< or =n< or =27 and l-values in the range 0< or =l< or =6, where n and l represent the radial order and the spherical harmonic degree of the eigenfunction respectively. In total, 184 modes belonging to 83 multiplets have been resolved and classified. The study of these modes has been accomplished without superposed-frequency analysis. It has been possible to estimate observationally the number of mode identifications that are incorrect because of coincidental frequency alignment of real or aliased peaks of two different modes; these results indicate that roughly-equal15 of the 184 modes identified are incorrectly classified. The firstorder rotational splitting in m is consistent with that found by Hill, Bos, and Goode (1982); the resolved members of the multiplets yield, for example, a rotational splitting that is first order in m of -1.80 +- 0.03 ..mu..Hz for n = 17, l = 2. The observed second-order effect in m is sufficiently small that relatively little deviation from a Zeeman pattern occurs. The observed width of the individual modes is roughly-equal1 ..mu..Hz. The observed symmetry properties confirm both the detection of multiplets and the axial symmetry of the Sun as seen by these oscillations.
- Research Organization:
- Department of Physics and Arizona Research Laboratories, University of Arizona, Tucson
- OSTI ID:
- 5477380
- Journal Information:
- Astrophys. J.; (United States), Journal Name: Astrophys. J.; (United States) Vol. 290:2; ISSN ASJOA
- Country of Publication:
- United States
- Language:
- English
Similar Records
Confirmation of the detection and classification of low-order, low-degree solar acoustic modes with the 1978 solar diameter observations
Evidence of solar oscillations in Rayleigh-scattered light
Global solar oscillations observed in the visible to near-infrared continuum
Journal Article
·
Sat Nov 30 23:00:00 EST 1985
· Astrophys. J.; (United States)
·
OSTI ID:6099896
Evidence of solar oscillations in Rayleigh-scattered light
Thesis/Dissertation
·
Thu Dec 31 23:00:00 EST 1992
·
OSTI ID:7271821
Global solar oscillations observed in the visible to near-infrared continuum
Thesis/Dissertation
·
Wed Dec 31 23:00:00 EST 1986
·
OSTI ID:7182959