Results 171 to 180 of about 13,753 (202)

Direct imaging of magnetohydrodynamic wave mode conversion near a 3D null point on the sun. [PDF]

Nat Commun
Kumar P, Nakariakov VM, Karpen JT, Cho KS.   +3 more
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Modeling Particle Acceleration at Interplanetary Shocks

AIP Conference Proceedings, 2008
A brief review of particle acceleration at inner heliospheric interplanetary and coronal mass ejection (CME)‐driven shocks is presented. The discussion is presented in terms of a specific event that was modeled using the Particle Acceleration and Transport in the Heliosphere model (hereafter PATH) code.
G. P. Zank, Gang Li, O. Verkhoglyadova, Gang Li, Qiang Hu, Olga Verkhoglyadova, Gary P. Zank, R. P. Lin, J. Luhmann   +8 more
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Particle acceleration by propagating interplanetary shocks

AIP Conference Proceedings, 1979
The process of charged particle acceleration in interplanetary shocks has been simulated for typical parameters. Since space probe observations of charged particle fluxes are the principle means of inferring the action of an acceleration mechanism, the simulation was designed to follow particles backwards in time from a given observing point, usually 1
T. P. Armstrong, R. B. Decker
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Observations of Particle Acceleration at Interplanetary Shocks

AIP Conference Proceedings, 2009
Collisionless shocks accelerate charged particles throughout heliosphere, from low in the solar corona to the outer edge of the supersonic solar wind. Particles can gain energy while interacting with shocks in different ways, depending on conditions at the shock and on particle species and energy.
George C. Ho, David Lario, Robert B. Decker, Xianzhi Ao, Gary Zank Ross Burrows   +4 more
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Acceleration in solar flares: Interacting particles versus interplanetary particles

Advances in Space Research, 1993
Abstract We study the properties of flare accelerated particles using gamma ray observations. We derive ion and electron energy spectra, electron to proton ratios, and numbers of interacting particles. We investigate the effects of the abundance variations implied by the gamma ray data on these parameters.
R. Ramaty, N. Mandzhavidze, B. Kozlovsky, J.G. Skibo   +3 more
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Fe/O Ratios in Interplanetary Shock Accelerated Particles

Space Science Reviews, 2007
It is widely accepted that diffusive shock acceleration is an important process in the heliosphere, in particular in producing the energetic particles associated with interplanetary shocks driven by coronal mass ejections. In its simplest formulation shock acceleration is expected to accelerate ions with higher mass to charge ratios less efficiently ...
H. V. Cane, I. G. Richardson, T. T. von Rosenvinge   +2 more
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Solar and interplanetary particle acceleration

Advances in Space Research, 2003
Abstract The nature and location of energetic particle acceleration (excluding planetary magnetospheres) in the inner heliosphere ( 1000 km/sec) coronal mass ejections is examined, but we find that they are not normally associated with relativistic energetic particle acceleration, although they may enhance the energy of particles already present in ...
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The acceleration of charged particles in interplanetary shock waves

Space Science Reviews, 1982
Consideration of the theoretical and observational literature on energetic ion acceleration in interplanetary shock waves is the basis for the present discussion of the shock acceleration of the solar wind plasma and particle transport effects. It is suggested that ISEE data be used to construct data sets for shock events that extend continuously from ...
M.E. Pesses, R.B. Decker, T.P. Armstrong
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Interplanetary particle acceleration, modulation and drift

Reviews of Geophysics, 1979
This report is concerned mainly with the contribution of U. S. scientists, during the period 1975–1978, to the general area of particle acceleration and transport in the solar wind, excluding particles of solar origin. Other work is cited only when it bears directly on the subject being discussed.
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Particle acceleration and Alfvén wave generation by an interplanetary shock

Astronomy Letters, 2016
Based on the event observed by ISEE 3 near the Earth’s orbit at 01:21 UT on April 5, 1979, we investigate the diffusive shock acceleration of ions and the generation of Alfven waves by accelerated particles near the quasi-parallel parts of interplanetary shock fronts within a quasi-linear approach.
E. G. Berezhko, S. N. Taneev
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