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

被引：18
作者：
Hubbard, W. B. [1 ]
McCarthy, D. W. [2 ]
Kulesa, C. A. [2 ]
Benecchi, S. D. [3 ]
Person, M. J. [4 ]
Elliot, J. L. [4 ]
Gulbis, A. A. S. [4 ,5 ]
机构：
[1] Univ Arizona, Lunar & Planetary Lab, Tucson, AZ 85721 USA
[2] Univ Arizona, Steward Observ, Tucson, AZ 85721 USA
[3] Space Telescope Sci Inst, Baltimore, MD 21218 USA
[4] MIT, Cambridge, MA 02139 USA
[5] S African Astron Observ, ZA-7935 Cape Town, South Africa
来源：
ICARUS | 2009年 / 204卷 / 01期
基金：
美国国家科学基金会; 美国国家航空航天局;
关键词：
Atmospheres; dynamics; Occultations; Pluto; atmosphere; JOVIAN UPPER-ATMOSPHERE; BETA-SCORPII; JUPITER;
D O I：
10.1016/j.icarus.2009.06.022
中图分类号：
P1 [天文学];
学科分类号：
0704 ;
摘要：
We apply scintillation theory to stellar signal fluctuations in the high-resolution, high signal/noise, dual-wavelength data from the MMT observation of the 2007 March 18 occultation of P445.3 by Pluto. A well-defined 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. (C) 2009 Elsevier Inc. All rights reserved.
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页码：284 / 289
页数：6
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