کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
8138077 | 1523553 | 2014 | 41 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Perturbation of the Mars atmosphere by the near-collision with Comet C/2013 A1 (Siding Spring)
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موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
علوم فضا و نجوم
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چکیده انگلیسی
The martian upper atmosphere could be strongly perturbed by the near collision with Comet C/2013 A1 (Siding Spring). Significant mass and energy will be deposited in the upper atmosphere of Mars if the comet coma is sufficiently dense. We predict that comet H2O production rates larger than 1028 molecules/s would produce temperature increases exceeding 30Â K and the H density in the upper atmosphere will approximately double. The temperature perturbation will persist for several hours and the increased H density for tens of hours. Drag on orbiting spacecraft may increase by substantial factors, depending upon comet activity, because of the thermal perturbation to the atmosphere. Observation of these perturbations may provide insight into the thermal and chemical balances of the atmosphere.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Icarus - Volume 237, 15 July 2014, Pages 202-210
Journal: Icarus - Volume 237, 15 July 2014, Pages 202-210
نویسندگان
Roger V. Yelle, A. Mahieux, S. Morrison, V. Vuitton, S.M. Hörst,