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What is the horizontal scale of the 5-min oscillations?

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Abstract

If wrong, all the early reports of a small horizontal scale (≈ 2000 km) for the 5-min oscillations may be due to unfortunate similarities between the velocity and overturning time of the solar granule convection and the corresponding velocity and period typical of the oscillations. A large horizontal scale (≈ 30000 km) for the oscillations seems consistent with the old data and almost required by more recent measurements. The large scales recently measured would imply that a sizeable fraction of the solar volume is involved in the oscillation and would cast some doubt on all the old theories of the 5-min oscillations which were based on plane parallel atmospheres.

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  1. Laboratory for Solar Physics, NASA-Goddard Space Flight Center, 20771, Greenbelt, Md., U.S.A.

    Charles L. Wolff

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  1. Charles L. Wolff
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Wolff, C.L. What is the horizontal scale of the 5-min oscillations?. Sol Phys 32, 31–39 (1973). https://doi.org/10.1007/BF00152727

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  • DOI: https://doi.org/10.1007/BF00152727

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