Results 41 to 50 of about 5,647 (190)

Planetary foreshock radio emissions [PDF]

Journal of Geophysical Research: Space Physics, 2005
The electron foreshock regions upstream of Earth's bow shock and upstream of traveling interplanetary shocks are known to be propitious sites for a variety of energetic particle and plasma wave phenomena, including radio emissions. A quantitative theoretical model has been developed for radio emissions associated with the terrestrial foreshock and for ...
Zdenka Kuncic, Iver H. Cairns
openaire   +1 more source

Characteristics of Foreshock Subsolar Compressive Structures

Journal of Geophysical Research: Space Physics, 2023
AbstractThe turbulent foreshock region upstream of the quasi‐parallel bow shock is dominated by waves and reflected particles that interact with each other and create a large number of different foreshock transients. The structures with the enhanced magnetic field, Short Large Amplitude Magnetic Structures, and density spikes named plasmoids are ...
Niki Xirogiannopoulou, Oleksandr Goncharov, Jana Safrankova, Zdenek Nemecek   +3 more
openaire   +1 more source

Unusual Martian Foreshock Waves Triggered by a Solar Wind Stream Interaction Region

The Astrophysical Journal Letters, 2023
Planetary bow shocks noncollisionally dissipate the incident bulk flow energy of solar wind into some other forms. To what extent and how solar wind disturbances affect the energy dissipation processes at the bow shocks on different planets remain ...
Zhenpeng Su, Yuming Wang, Tielong Zhang, Zhiyong Wu, Long Cheng, Zhuxuan Zou, Chenglong Shen, Jingnan Guo, Sudong Xiao, Guoqiang Wang, Zonghao Pan, Kai Liu, Xinjun Hao, Yiren Li, Manming Chen, Yutian Chi, Mengjiao Xu   +16 more
doaj   +1 more source

Oblique propagation and temperature effects on the resonant right-hand ion beam instability

Frontiers in Astronomy and Space Sciences, 2023
The resonant right-hand instability (RHI) is often the dominant mode driven by reflected ions upstream of Earth’s quasi-parallel bow shock. In the tradition of Peter Gary, this paper further explores the right-hand instability using numerical solutions ...
Ari Le, Li-Jen Chen, Blake Wetherton, Brett Keenan, Adam Stanier   +4 more
doaj   +1 more source

Detection of Shallow Tectonic Tremors in Hyuga‐nada, Nankai Trough, Using the Newly Established N‐Net OBS Network

Geophysical Research Letters, Volume 53, Issue 6, 28 March 2026.
Abstract Monitoring tectonic tremors is crucial for understanding stress release in subduction zones and assessing megathrust earthquake risk. The Hyuga‐nada region, at the western edge of the Nankai Trough, Japan, provides a natural laboratory for investigating links among slow earthquakes, megathrust events, and complex subduction structures.
Kodai Sagae, Masayuki Kano, Suguru Yabe, Takahiko Uchide   +3 more
wiley   +1 more source

3-D global hybrid simulations of magnetospheric response to foreshock processes

Earth, Planets and Space, 2021
It has been suggested that ion foreshock waves originating in the solar wind upstream of the quasi-parallel (Q-||) shock can impact the planetary magnetosphere leading to standing shear Alfvén waves, i.e., the field line resonances (FLRs). In this paper,
Feng Shi, Yu Lin, Xueyi Wang, Boyi Wang, Yukitoshi Nishimura   +4 more
doaj   +1 more source

Relativistic electrons generated at Earth's quasi-parallel bow shock. [PDF]

, 2019
Plasma shocks are the primary means of accelerating electrons in planetary and astrophysical settings throughout the universe. Which category of shocks, quasi-perpendicular or quasi-parallel, accelerates electrons more efficiently is debated.
Angelopoulos, Vassilis, Liu, Terry Z, Lu, San   +2 more
core   +1 more source

Physics of relativistic shocks [PDF]

, 2009
Relativistic shocks are usually thought to occur in violent astrophysical explosions. These collisionless shocks are mediated by a plasma kinetic streaming instability, often loosely referred to as the Weibel instability, which generates strong magnetic ...
Gary Zank Ross Burrows, Mikhail V. Medvedev, Xianzhi Ao   +2 more
core   +2 more sources

Ion Energization and Acceleration Associated With Foreshock Bubbles: Results From a Hybrid‐Vlasov Simulation and MMS Observations

Journal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.
Abstract Foreshock Bubbles (FBs) are large‐scale transient structures found in Earth's foreshock region and are associated with foreshock‐discontinuity interaction. FBs play a significant role in accelerating and energizing plasma through various mechanisms.
Souhail Dahani, Lucile Turc, Veera Lipsanen, Shi Tao, Jonas Suni, Yann Pfau‐Kempf, Milla Kalliokoski, Minna Palmroth, Daniel Gershman, Roy Torbert, James Burch   +10 more
wiley   +1 more source

Seismogenic structure behaviour revealed by spatial clustering of seismicity in the Umbria-Marche Region (Central Italy)

Annals of Geophysics, 1998
Time variations in the spatial distribution of earthquake epicentres are analyzed by application of the fractal correlation dimension method. The zone under investigation is located in Central Italy, bounded in longitude by 12.0 and 14.4 degrees east and
P. Tosi
doaj   +1 more source