Capture of solar wind alpha-particles by the Martian atmosphere
نویسندگان
چکیده
منابع مشابه
Capture of solar wind alpha-particles by the Martian atmosphere
HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L’archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau...
متن کاملSputtering of theMartian atmosphere by solar wind pick-up ions
Monte Carlo models are used to describe the interaction between the incident pick-up ions and the Mars neutral atmosphere. The sputtered population inside the corona and escaping particles are described using a modi4ed 3D test particle model, whereas, the heating e6ect due to the incident 7ux is described using a 2D Direct Simulation Monte Carlo. These results show that the standard 1D models o...
متن کاملMars Global Surveyor Measurements of the Martian Solar Wind Interaction
The solar wind at Mars interacts with the extended atmosphere and small-scale crustal magnetic fields. This interaction shares elements with a variety of solar system bodies, and has direct bearing on studies of the long-term evolution of the Martian atmosphere, the structure of the upper atmosphere, and fundamental plasma processes. The magnetometer (MAG) and electron reflectometer (ER) on Mar...
متن کاملSolar wind interaction with the Martian upper atmosphere: Roles of the variable 3D cold thermosphere and hot oxygen corona
We study the role of the variable 3D thermosphere and exosphere on the Martian ionospheric structure and ion escape rates in the process of the solar wind-Mars interaction. We employ a four-species multifluid MHD (MF-MHD) model to simulate the Martian ionosphere and magnetosphere. The cold thermosphere background is taken from the Mars Global Ionosphere Thermosphere Model (M-GITM) and the hot o...
متن کاملThe Loss of the Martian Atmosphere
It is widely accepted that Mars had an atmosphere at least 4 Gyr ago. The processes that led to the loss of the Martian atmosphere are still debated. Solar-wind-induced sputtering, impact erosion, weathering, sequestration into the regolith and polar caps, and photodissociative reactions are the mechanisms believed to be responsible for removing the atmosphere. No one process has been shown to ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Geophysical Research Letters
سال: 2009
ISSN: 0094-8276
DOI: 10.1029/2009gl040235