Results 11 to 20 of about 244,108 (291)

The Possible Role of Penning Ionization Processes in Planetary Atmospheres

open access: yesAtmosphere, 2015
In this paper we suggest Penning ionization as an important route of formation for ionic species in upper planetary atmospheres. Our goal is to provide relevant tools to researchers working on kinetic models of atmospheric interest, in order to include ...
Stefano Falcinelli   +2 more
doaj   +2 more sources

Serverless Architecture for Data Processing and Detecting Anomalies with the Mars Express MARSIS Instrument

open access: yesThe Astronomical Journal, 2023
The Mars Advanced Radar for Subsurface and Ionosphere Sounding (MARSIS) on board Mars Express has been sampling the topside ionosphere of Mars since mid-2005. The analysis of the main reflection (nadir) of the ionosphere through the ionograms provided by
David Pacios   +6 more
doaj   +1 more source

Nightside Ionospheric Structure and Composition on Mars Driven by Energetic Electron Precipitation

open access: yesThe Astrophysical Journal, 2023
Ionospheric chemistry plays an unexpectedly important role in the evolution of planetary habitability. This study is dedicated to a detailed modeling of the nightside Martian ionospheric structure and composition, a topic that has been poorly explored ...
Shiqi Wu   +6 more
doaj   +1 more source

Exoplanet weather and climate regimes with clouds and thermal ionospheres. A model grid study in support of large-scale observational campaigns [PDF]

open access: yesAstronomy & Astrophysics, 2022
With observational efforts moving from the discovery into the characterisation mode, systematic campaigns that cover large ranges of global stellar and planetary parameters will be needed.
Ch. Helling   +9 more
semanticscholar   +1 more source

Variability of Draped Interplanetary Magnetic Field in the Subsolar Martian Ionosphere

open access: yesThe Astrophysical Journal, 2023
In the absence of an intrinsic magnetic field, the solar wind interacts directly with the Martian atmosphere, and the interplanetary magnetic field (IMF) drapes around the ionosphere. With the aid of multi-instrument measurements from Mars Atmosphere and
J.-P. Huang, Y.-Q. Hao, H.-Y. Lu, J. Cui
doaj   +1 more source

Study of the Effect of Martian Dust Storms on Ionospheric Electron Density Based on Physical-grid Deep Neural Learning Technology

open access: yesThe Astrophysical Journal, 2023
The behavior of the Martian ionosphere during global dust storms has always been a popular topic. Based on many Mars Atmosphere and Volatile Evolution observations, a Martian ionospheric electron density model is constructed herein using a physical-grid ...
ShengBin Zhong   +3 more
doaj   +1 more source

A New Tool for Understanding the Solar Wind–Venus Interaction: Three-dimensional Multifluid MHD Model

open access: yesThe Astrophysical Journal, 2023
In this paper, we present a new tool to investigate the interaction of the solar wind with Venus with the approach of a global multifluid magnetohydrodynamics (MHD) model. The continuity, momentum, and energy equations for H ^+ , O ^+ , ${{\rm{O}}}_{2}^{+
Tong Dang   +7 more
doaj   +1 more source

Characteristic Timescales for the Dayside Martian Ionosphere: Chemistry, Diffusion, and Magnetization

open access: yesThe Astronomical Journal, 2023
Different boundaries could be defined in a planetary ionosphere where the dominant process in function switches from one to the other. Identifying these boundaries and understanding their variations are hence crucial for disentangling the complexity of ...
Yutian Cao   +4 more
doaj   +1 more source

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