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Buoyancy waves in Pluto’s high atmosphere: Implications for stellar occultations

✍ Scribed by W.B. Hubbard; D.W. McCarthy; C.A. Kulesa; S.D. Benecchi; M.J. Person; J.L. Elliot; A.A.S. Gulbis

Book ID: 103830564
Publisher: Elsevier Science
Year: 2009
Tongue: English
Weight: 670 KB
Volume: 204
Category: Article
ISSN: 0019-1035
DOI: 10.1016/j.icarus.2009.06.022

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✦ Synopsis

We apply scintillation theory to stellar signal fluctuations in the high-resolution, high signal/noise, dualwavelength data from the MMT observation of the 2007 March 18 occultation of P445.3 by Pluto. A welldefined high wavenumber cutoff in the fluctuations is consistent with viscous-thermal dissipation of buoyancy waves (internal gravity waves) in Pluto's high atmosphere, and provides strong evidence that the underlying density fluctuations are governed by the gravity-wave dispersion relation.

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