Search Publications
Circular-ribbon flares and the related activities
Zhang, Qingmin
Solar flares are an impulsive increase of emissions as a result of impetuous release of magnetic free energy. This paper will present the recent progress on circular-ribbon flares (CRFs) and their related activities, including coronal jets, filaments, coronal mass ejections (CMEs), radio bursts, coronal dimmings, and coronal loop oscillations. Owi…
Diagnostics of the solar coronal plasmas by magnetohydrodynamic waves: magnetohydrodynamic seismology
Nakariakov, Valery M.; Yuan, Ding; Kolotkov, Dmitrii Y. +3 more
Macroscopic wave and oscillatory phenomena ubiquitously detected in the plasma of the corona of the Sun are interpreted in terms of magnetohydrodynamic theory. Fast and slow magnetoacoustic waves are clearly distinguished in observations. Properties of coronal magnetohydrodynamic waves are determined by local parameters of the plasma, including th…
Recent advances in solar data-driven MHD simulations of the formation and evolution of CME flux ropes
Poedts, Stefaan; Schmieder, Brigitte; Guo, Jinhan
Filament eruptions and coronal mass ejections are physical phenomena related to magnetic flux ropes carrying electric current. A magnetic flux rope is a key structure for solar eruptions, and when it carries a southward magnetic field component when propagating to the Earth. It is the primary driver of strong geomagnetic storms. As a result, devel…
Regarding the relativistic electron dynamics in the outer radiation belt: a historical view
Stepanova, Marina; Pinto, Victor; Antonova, Elizaveta
The start of the space era marked the discovery of the Earth's radiation belts. Sixty-five years after that discovery, there are still many unknowns in its dynamics, but there is also a lot of understanding about many processes. This review summarizes a broad overview of a particular topic: the effect of geomagnetic storms on the radiation belts f…
Intermittent plasma turbulence in the Martian plasma environment
Fränz, Markus; Echer, Ezequiel; Franco, Adriane M. S. +1 more
Due to the absence of a global intrinsic magnetic field, Mars presents an induced magnetosphere, which is formed by the interaction between the solar wind and the conductive ionosphere of the planet. In that interaction, plasma boundaries and regions are created. Wave activity is present in the Mars plasma environment, and as consequence of non-li…
Kinetic Alfven wave (KAW) eigenmode in magnetosphere magnetic reconnection
Wang, Chi; Dai, Lei
One prominent signature of collisionless magnetic reconnection in the magnetosphere is the Hall effect. In the ion-scale region of reconnection, ions cannot follow the magnetic field line whereas electrons are still magnetized. The difference in the motions of electrons and ions leads to charge separation, the resulting transverse Hall electric fi…
Recent progress on magnetic reconnection by in situ measurements
Lu, Quanming; Wang, Rongsheng; Lu, San +2 more
In the last decades, a few spacecraft missions have been launched to investigate the process of magnetic reconnection in space, during which magnetic free energy is explosively released into plasma kinetic energy and heating. Due to the sophisticated in situ measurements of the spacecraft missions, a big progress has been achieved over the last de…
Electric fields and currents in solar-terrestrial plasmas
Yang, Zhongwei; Parks, George K.; Lee, Ensang
This article will review many ideas and concepts originally suggested by Alfvén (Space Sci Rev 7:1940, 1967) and Fälthammar (Rev Geophys 15: 457, 1977) on the important roles electric fields and currents play in solar-terrestrial plasmas. Much of our understanding of planetary and solar plasmas has come primarily from treating plasmas as fluids. F…
Propagation characteristics of coronal mass ejections (CMEs) in the corona and interplanetary space
Wang, Yuming; Shen, Fang; Shen, Chenglong +3 more
Coronal mass ejections (CMEs) play an important role in space weather. The propagation characteristics of CMEs in the Corona and interplanetary space determine whether, when and how the CME will hit the Earth. To this end, a lot of progress has been made both on observational and numerical studies of CMEs. With the development of the advanced obse…
Nonlinear dynamics in space plasma turbulence: temporal stochastic chaos
Chian, A. C. -L.; Miranda, R. A.; Hada, T. +3 more
Intermittent turbulence is key for understanding the stochastic nonlinear dynamics of space, astrophysical, and laboratory plasmas. We review the theory of deterministic and stochastic temporal chaos in plasmas and discuss its link to intermittent turbulence observed in space plasmas. First, we discuss the theory of chaos, intermittency, and compl…