Results 11 to 20 of about 215 (119)

Observation of CO2++ dication in the dayside Martian upper atmosphere

open access: yesEarth and Planetary Physics, 2020
Doubly charged positive ions (dications) are an important component of planetary ionospheres because of the large energy required for their formation.
Hao Gu   +7 more
doaj   +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

Concurrent effects of Martian topography on the thermosphere and ionosphere at high northern latitudes

open access: yesEarth, Planets and Space, 2022
Martian topography modulated non-migrating tides play important roles in the upper atmosphere and thus in the ionosphere through their coupling, especially in their longitude variations. In this study, the neutral scale height (H n ) and ionospheric peak
Yiding Chen   +4 more
doaj   +1 more source

Local Generation of Magnetosonic Waves by Ring Beam Hot Protons in the Martian Ionosphere

open access: yesGeophysical Research Letters, 2023
Magnetosonic (MS) waves are dominant plasma waves causing severe Martian ionospheric erosion. They are generally considered to originate upstream of Martian bow shock with frequencies near the upstream proton gyrofrequency.
Jing Wang   +5 more
doaj   +1 more source

Response of photoelectron peaks in the Martian ionosphere to solar EUV/X-ray irradiance

open access: yesEarth and Planetary Physics, 2020
An important population of the dayside Martian ionosphere are photoelectrons that are produced by solar Extreme Ultraviolet and X-ray ionization of atmospheric neutrals.
XiaoShu Wu   +5 more
doaj   +1 more source

Radio Absorption in the Nightside Ionosphere of Mars During Solar Energetic Particle Events

open access: yesSpace Weather, 2023
Characterization, understanding, and prediction of the Martian radio environment are of increasing importance to the forthcoming human exploration of Mars.
Y. Harada   +5 more
doaj   +1 more source

Variability of the Martian ionosphere from the MAVEN Radio Occultation Science Experiment

open access: yesEarth and Planetary Physics, 2019
The Martian ionosphere is produced by a number of controlling processes, including solar extreme ultraviolet radiation (EUV) and X-ray ionization, impact ionization by precipitating electrons, and day-to-night transport.
MeiJuan Yao   +4 more
doaj   +1 more source

Interplanetary Magnetic Field Effect on the Location of the Martian Bow Shock: MAVEN Observations

open access: yesThe Astrophysical Journal, 2023
The Martian bow shock (BS) is generated with the mass-loading and magnetic pileup processes when the solar wind interacts with the Martian ionosphere. In this vein, the interplanetary magnetic field (IMF) frozen in the solar wind can affect the location ...
H. Y. Sui   +4 more
doaj   +1 more source

Martian Proton Aurora Brightening Reveals Atmospheric Ion Loss Intensifying

open access: yesGeophysical Research Letters, 2023
The Martian proton aurora is a distinct aurora phenomenon resulting from the direct deposition of solar wind energy into Mars' dayside atmosphere. What solar wind parameters influence the aurora activity in the short term is yet unknown, as are the ...
Fei He   +12 more
doaj   +1 more source

MoMo: a new empirical model of the Mars ionospheric total electron content based on Mars Express MARSIS data

open access: yesJournal of Space Weather and Space Climate, 2019
Aims: Several scientific landers and rovers have reached the Martian surface since the 1970s. Communication between the asset (i.e., lander or rover) and Mars orbiters or Earth antennas uses radio signals in UHF to X-band frequencies passing through the ...
Bergeot Nicolas   +7 more
doaj   +1 more source

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