Heating the Atmosphere
نویسندگان
چکیده
منابع مشابه
Wave heating of the solar atmosphere.
Magnetic waves are a relevant component in the dynamics of the solar atmosphere. Their significance has increased because of their potential as a remote diagnostic tool and their presumed contribution to plasma heating processes. We discuss our current understanding of coronal heating by magnetic waves, based on recent observational evidence and theoretical advances. The discussion starts with ...
متن کاملSputtering and heating of Titan's upper atmosphere.
Titan is an important endpoint for understanding atmospheric evolution. Prior to Cassini's arrival at Saturn, modelling based on Voyager data indicated that the hydrogen escape rate was large (1-3x1028amus-1), but the escape rates for carbon and nitrogen species were relatively small (5x1026amus-1) and dominated by atmospheric sputtering. Recent analysis of the structure of Titan's thermosphere...
متن کاملModels for magnetic heating of the solar atmosphere
Sustaining the hot solar corona requires an energy flux of up to about 10erg cm−2s−1 whose source must be the photospheric motions below. However, the precise way this energy is transferred and damped still remains an open question. Here a review of recent advances in theoretical models for coronal heating, in the light of the fundamental observational results of the last decade, will be
متن کاملEnergy deposition of pickup ions and heating of Titan’s atmosphere
The deposition of energy, escape of atomic and molecular nitrogen and heating of the upper atmosphere of Titan are studied using a Direct Simulation Monte Carlo method. It is found that the deflected magnetospheric atomic nitrogen ions and molecular pickup ions deposit more energy in Titan’s upper atmosphere than solar radiation. The energy deposition in this region determines the atmospheric l...
متن کاملThe universally growing mode in the solar atmosphere: coronal heating by drift waves
The heating of the plasma in the solar atmosphere is discussed within both frameworks of fluid and kinetic drift wave theory. We show that the basic ingredient necessary for the heating is the presence of density gradients in the direction perpendicular to the magnetic field vector. Such density gradients are a source of free energy for the excitation of drift waves. We use only well establishe...
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ژورنال
عنوان ژورنال: Publications of the Astronomical Society of the Pacific
سال: 1911
ISSN: 0004-6280,1538-3873
DOI: 10.1086/122101