Results 1 to 10 of about 79,405 (157)

Geoeffectiveness of Interplanetary Alfvén Waves. II. Spectral Characteristics and Geomagnetic Responses

The Astrophysical Journal, 2023
Using multipoint observations over 10 yr near 1 au, we investigate the spectra (5 minutes to 2 hr) of interplanetary Alfvén waves and the responses in the geomagnetic activities.
Yimin Han, Lei Dai, Shuo Yao, Chi Wang, Walter Gonzalez, Suping Duan, Benoit Lavraud, Yong Ren, Zhenyuan Guo   +8 more
doaj   +1 more source

Geoeffectiveness of Interplanetary Alfvén Waves. I. Magnetopause Magnetic Reconnection and Directly Driven Substorms

The Astrophysical Journal, 2023
In particular during the descending phase of the solar cycle, Alfvén waves in the high-speed solar wind streams are a major form of interplanetary disturbances.
Lei Dai, Yimin Han, Chi Wang, Shuo Yao, Walter Gonzalez, Suping Duan, Benoit Lavraud, Yong Ren, Zhenyuan Guo   +8 more
doaj   +1 more source

Ion Loss within a Reconnection Exhaust near Mars: MAVEN Observations

The Astrophysical Journal, 2023
We present observations from Mars Atmosphere and Volatile EvolutioN of a reconnection exhaust, which was probably not ongoing, in the Martian magnetosheath. The reconnection jet with abundant heavy ions is directed outward to space.
Xiaojun Xu, Xing Wang, Zilu Zhou, Qing Chang, Lei Luo, Peishan He, Siqi Yi, Hui Li   +7 more
doaj   +1 more source

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

The 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, Jun Cui, Wenjun Liang, Xiaoshu Wu, Haoyu Lu   +4 more
doaj   +1 more source

Quasi-elastodynamic Processes Involved in the Interaction between Solar Wind and Magnetosphere

The Astrophysical Journal, 2023
The interaction between the solar wind and the magnetosphere is one of the most important research subjects in the fields of astrophysics and space physics. For more than half a century, based on the pressure balance assumption between the solar wind and
Y. X. Gu, Y. Wang, F. S. Wei, X. S. Feng, X. J. Song, B. Y. Wang, P. B. Zuo, C. W. Jiang, X. J. Xu, Z. L. Zhou   +9 more
doaj   +1 more source

Global Electric Fields at Mars Inferred from Multifluid Hall-MHD Simulations

The Astrophysical Journal, 2023
In the Martian induced magnetosphere, the motion of planetary ions is significantly controlled by the ambient electric fields, which can be decomposed into three components: the motional, Hall, and ambipolar electric fields.
Shibang Li, Haoyu Lu, Jinbin Cao, Jun Cui, Yasong Ge, Xiaoxin Zhang, Zhaojin Rong, Guokan Li, Yun Li, Jiawei Gao, Jianxuan Wang   +10 more
doaj   +1 more source

Close encounters in young stellar clusters: implications for planetary systems in the solar neighbourhood [PDF]

, 2007
The stars that populate the solar neighbourhood were formed in stellar clusters. Through N-body simulations of these clusters, we measure the rate of close encounters between stars. By monitoring the interaction histories of each star, we investigate the
Aarseth, Aarseth, Adams, Adams, Ahmad, Allen, Bastian, Binney, Chambers, Chambers, Daniel Malmberg, Davies, De La Fuente Marcos, Desidera, Dougal Mackey, Duquennoy, Faber, Francesca De Angeli, Goodwin, Heggie, Heggie, Heggie, Holman, Hurley, Hurley, Innanen, Kharchenko, Kozai, Kroupa, Kustaanheimo, Lada, Lamers, Laughlin, Luhman, Makino, Malmberg, Marcy, Mark I. Wilkinson, Melvyn B. Davies, Pfahl, Pfahl, Plummer, Porras, Portegies Zwart, Ross P. Church, Spurzem   +45 more
core   +2 more sources

Kelvin–Helmholtz Instability at Mars: In Situ Observations and Kinetic Simulations

The Astrophysical Journal, 2023
Kelvin–Helmholtz (K-H) instability is a fundamental boundary instability between two fluids with different speeds, exchanging the mass, momentum, and energy across the boundary.
Lei Wang, Can Huang, Aimin Du, Yasong Ge, Guo Chen, Zhongwei Yang, Songyan Li, Kuixiang Zhang   +7 more
doaj   +1 more source

Letter to the Editor
On the use of the sunspot number for the estimation of past solar and upper atmosphere conditions from historical and modern auroral observations [PDF]

Annales Geophysicae, 2005
In this short contribution the use of different sunspot numbers for the estimation of past solar and upper atmosphere conditions from historical and modern auroral observations realised by Schröder et al. (2004) is analysed.
Vaquero
doaj   +1 more source

Global Hall MHD Simulations of the Solar Wind Implantation Flux on the Lunar Surface

The Planetary Science Journal, 2023
The solar wind can directly interact with the lunar surface and provide an important source for surface space weathering and water generation. Here we study the solar wind implantation flux on the lunar surface with global Hall MHD simulations.
Lianghai Xie, Lei Li, Huizi Wang, Binbin Tang, Jindong Wang, Yiteng Zhang, Quanqi Shi, Bin Zhou, Yongyong Feng   +8 more
doaj   +1 more source