Results 1 to 10 of about 303 (180)

Simulation of Transient Topside Layer in the Martian Ionosphere

Remote Sensing, 2023
Many Mars missions, e.g., Mariner, Viking, Mars Global Surveyor (MGS), Mars Express (MEX), and Mars Atmosphere and Volatile Evolution (MAVEN), have been launched to study the Martian atmosphere.
Chunhua Jiang, Rong Tian, Lehui Wei
exaly   +4 more sources

In Situ Measurements of Thermal Ion Temperature in the Martian Ionosphere. [PDF]

J Geophys Res Space Phys, 2021
Abstract In situ measurements of ionospheric and thermospheric temperatures are experimentally challenging because orbiting spacecraft typically travel supersonically with respect to the cold gas and plasma. We present temperatures in Mars' ionosphere derived from data measured by the SupraThermal And Thermal Ion Composition ...
Hanley KG, McFadden JP, Mitchell DL, Fowler CM, Stone SW, Yelle RV, Mayyasi M, Ergun RE, Andersson L, Benna M, Elrod MK, Jakosky BM.   +11 more
europepmc   +4 more sources

Betatron cooling of electrons in the Martian ionosphere

Earth and Planetary Physics
Electron dynamics plays a crucial role in the evolution of the Martian ionosphere. However, the adiabatic process, a classical mechanism for modulating electron energy and pitch-angle distributions, has not been reported in this environment.
Xu Bai, ZuZheng Chen, HuiShan Fu, ZhiZhong Guo, WenDing Fu, TianYu Zhou, Zhe Wang, Jing Wang   +7 more
doaj   +2 more sources

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

Geophysical 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, Jiang Yu, Z Z Chen
exaly   +2 more sources

Three‐dimensional Martian ionosphere model: I. The photochemical ionosphere below 180 km [PDF]

Journal of Geophysical Research E: Planets, 2013
We describe the Mars ionosphere with unprecedented detail in 3‐D, as simulated by a Mars general circulation model (the Laboratoire de Météorologie Dynamique Mars GCM), and compare it with recent measurements. The model includes a number of recent extensions and improvements. Different simulations for a full Martian year have been performed.
FRANCISCO Gonzalez-Galindo, J -Y Chaufray, M A López-Valverde   +2 more
exaly   +5 more sources

The impact of a stealth CME on the Martian topside ionosphere [PDF]

Monthly Notices of the Royal Astronomical Society, 2021
ABSTRACT Solar cycle 24 is one of the weakest solar cycles recorded, but surprisingly the declining phase of it had a slow coronal mass ejection (CME) that evolved without any low coronal signature and is classified as a stealth CME that was responsible for an intense geomagnetic storm at Earth (Dst = −176 nT).
Smitha V Thampi, C Krishnaprasad, Govind G Nampoothiri, Tarun K Pant   +3 more
openaire   +2 more sources

A New Method for Retrieving Electron Density Profiles from the MARSIS Ionograms

Remote Sensing, 2022
The Martian ionosphere was actively detected by Mars Advanced Radar for Subsurface and Ionosphere Sounding (MARSIS) aboard the Mars Express. The detected echo signal of the MARSIS at an epoch is presented as a function of frequency and time delay to form
Wendong Liu, Libo Liu, Yiding Chen, Huijun Le, Ruilong Zhang, Wenbo Li, Jiacheng Li, Tongtong Zhang, Yuyan Yang, Han Ma   +9 more
doaj   +1 more source

The Analysis of the Topside Additional Layer of Martian Ionosphere Using MARSIS/Mars Express Data [PDF]

Journal of Astronomy and Space Sciences, 2012
In this study, the transient second or third layer on the topside of the Martian ionosphere were investigated with the most recently released Mars advanced radar for subsurface and ionospheric sounding/Mars Express data obtained from January 2010 to ...
Eojin Kim, Haingja Seo, Joo Hyeon Kim, Joo Hee Lee, Yong Ha Kim, Gi-Hyuk Choi, Eun-Sup Sim   +6 more
doaj   +1 more source

Tianwen-1 and MAVEN Observations of the Response of Mars to an Interplanetary Coronal Mass Ejection

The Astrophysical Journal, 2023
Interplanetary coronal mass ejections (ICMEs) are solar transients that have significant effects on the upper atmosphere and ionosphere of Mars. The simultaneous spacecraft observations from Tianwen-1/MOMAG in solar wind and multiple instruments on board
Bingkun Yu, Yutian Chi, Mathew Owens, Christopher J. Scott, Chenglong Shen, Xianghui Xue, Luke Barnard, Tielong Zhang, Daniel Heyner, Hans-Ulrich Auster, Ingo Richter, Jingnan Guo, Beatriz Sánchez-Cano, Zonghao Pan, Zhuxuan Zou, Zhenpeng Su, Zhiyong Wu, Guoqiang Wang, Sudong Xiao, Kai Liu, Xinjun Hao, Yiren Li, Manming Chen, Xiankang Dou, Mike Lockwood   +24 more
doaj   +1 more source

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

The 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, Zhou Chen, Xiaohua Deng, RongXin Tang   +3 more
doaj   +1 more source