Solar structure from global studies of the 5-minute oscillation

High sensitivity Doppier spectroscopy of integral sunlight in the 769.9 nm line of neutral potassium reveals several equally spaced lines of Q > 1,000 centred on the well known period of 5 min. These lines are interpreted as low l , high n overtones of the entire Sun and, if viewed in terms of cu...

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Bibliographic Details
Published in:Nature (London) 1979-12, Vol.282 (5739), p.591-594
Main Authors: Claverie, A, Isaak, G. R, McLeod, C. P, van der Raay, H. B, Cortes, T. Roca
Format: Article
Language:English
Subjects:
Humanities and Social Sciences
letter
multidisciplinary
Science
Science (multidisciplinary)
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Summary:High sensitivity Doppier spectroscopy of integral sunlight in the 769.9 nm line of neutral potassium reveals several equally spaced lines of Q > 1,000 centred on the well known period of 5 min. These lines are interpreted as low l , high n overtones of the entire Sun and, if viewed in terms of current solar models, appear to imply a low heavy element abundance and a consequent low solar neutrino flux. Previous workers 1–3 have used spatial resolution to study the 5-min oscillation of the solar photosphere and have shown that power is concentrated along narrow ridges in the k , w diagram. These oscillations are mainly low n , high l value acoustic modes of the entire Sun. In contrast to this, the present work (for a summary see ref. 4) is aimed at an overall view of the solar surface and consequently is biased to a study of low l value oscillations. These modes penetrate deeply 5 and thus probe the structure as well as the interior angular velocity of the Sun 6 .
ISSN:0028-0836
1476-4687
DOI:10.1038/282591a0