A Criterion for the Validity of Parker's Model in Thermal Escape Problems for Planetary Atmospheres
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| dc.contributor.author | Volkov, Alexey N. | |
| dc.date.accessioned | 2018-10-12T19:55:08Z | |
| dc.date.available | 2018-10-12T19:55:08Z | |
| dc.date.issued | 2015-10-01 | |
| dc.identifier.citation | Volkov, A. (2015): A Criterion for the Validity of Parker's Model in Thermal Escape Problems for Planetary Atmospheres. The Astrophysical Journal Letters, 812(1). DOI: 10.1088/2041-8205/812/1/L1 | en_US |
| dc.identifier.uri | http://ir.ua.edu/handle/123456789/4020 | |
| dc.identifier.uri | http://iopscience.iop.org/article/10.1088/2041-8205/812/1/L1/meta | |
| dc.description.abstract | Mass escape rate of mon- and diatomic gases from a planetary atmosphere is studied based on Parkerʼs model for a broad range of surface conditions. The escape rate is found to follow two asymptotic regimes, namely, high- and low-density regimes, with a short intermediate regime between them. Equations for the escape rate in every asymptotic regime are found theoretically. A comparison of the obtained escape rates with results of recent kinetic simulations shows that Parkerʼs model satisfactorily predicts escape rates only in the high-density regime. Based on this finding, a criterion of applicability of Parkerʼs model for the calculation of the mass escape rate is established. | en_US |
| dc.format.mimetype | application/pdf | en_US |
| dc.subject | Kuiper belt: general | en_US |
| dc.subject | planets and satellites: atmospheres | en_US |
| dc.title | A Criterion for the Validity of Parker's Model in Thermal Escape Problems for Planetary Atmospheres | en_US |
| dc.type | text | en_US |
