Results 21 to 30 of about 13,753 (202)

Radio Astronomical Tools for the Study of Solar Energetic Particles I. Correlations and Diagnostics of Impulsive Acceleration and Particle Propagation

open access: yesFrontiers in Astronomy and Space Sciences, 2021
Solar energetic particles (SEPs) are sporadically ejected from the Sun during flares and coronal mass ejections. They are of major astrophysical interest, because the proximity of the Sun allows for detailed multi-messenger studies.
Karl-Ludwig Klein
doaj   +1 more source

Disappearance of plasmaspheric hiss following interplanetary shock [PDF]

open access: yes, 2015
Plasmaspheric hiss is one of the important plasma waves controlling radiation belt dynamics. Its spatiotemporal distribution and generation mechanism are presently the object of active research.
Abel   +102 more
core   +3 more sources

Shock Propagation and Associated Particle Acceleration in the Presence of Ambient Solar-Wind Turbulence

open access: yesFrontiers in Astronomy and Space Sciences, 2021
The topic of this review paper is on the influence of solar wind turbulence on shock propagation and its consequence on the acceleration and transport of energetic particles at shocks.
Fan Guo   +3 more
doaj   +1 more source

Coronal mass ejections, magnetic clouds, and relativistic magnetospheric electron events: ISTP [PDF]

open access: yes, 1998
The role of high-speed solar wind streams in driving relativistic electron acceleration within the Earth\u27s magnetosphere during solar activity minimum conditions has been well documented.
Acuna   +36 more
core   +2 more sources

Nonlinear Interaction of Low-frequency Alfvén Waves and Ions

open access: yesThe Astrophysical Journal, 2023
The interaction between Alfvén waves and particles is a critical phenomenon in space and laboratory plasmas, and it has been observed that low-frequency Alfvén waves can accelerate and heat ions through subharmonic resonant interactions.
Xianshu Wu   +4 more
doaj   +1 more source

Transmission and Emission of Solar Energetic Particles in Semi-transparent Shocks. [PDF]

open access: yes, 2014
While major solar energetic particle (SEP) events are associated with coronal mass ejection (CME)-driven shocks in solar wind, accurate SEP measurements reveal that more than one component of energetic ions exist in the beginning of the events.
Axford   +21 more
core   +1 more source

How Common is Energetic ^3He in the Inner Heliosphere? [PDF]

open access: yes, 2003
Using data from the SIS and ULEIS instruments on the Advanced Composition Explorer (ACE) we have identified periods during which energetic ^3He is present in near-Earth interplanetary space between November 1997 and May 2002.
Christian, E. R.   +13 more
core   +1 more source

Magnetic-reconnection-driven Turbulence and Turbulent Reconnection Acceleration

open access: yesThe Astrophysical Journal, 2023
This paper employs an MHD-PIC method to perform numerical simulations of magnetic-reconnection-driven turbulence and turbulent reconnection acceleration of particles.
Shi-Min Liang   +3 more
doaj   +1 more source

Short term Variability of the Sun Earth System: An Overview of Progress Made during the CAWSES II Period [PDF]

open access: yes, 2015
This paper presents an overview of results obtained during the CAWSES II period on the short term variability of the Sun and how it affects the near Earth space environment. CAWSES II was planned to examine the behavior of the solar terrestrial system as
Gopalswamy, Nat   +2 more
core   +2 more sources

Ground Level Enhancement in the 2014 January 6 Solar Energetic Particle Event [PDF]

open access: yes, 2014
We present a study of the 2014 January 6 solar energetic particle (SEP) event, which produced a small ground level enhancement (GLE), making it the second GLE of this unusual solar cycle 24.
Akiyama, S.   +6 more
core   +3 more sources

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