Results 191 to 200 of about 13,868 (214)
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Charged particle acceleration processes in the interplanetary medium
Advances in Space Research, 1989Abstract Selected aspects of energetic (>35 keV) ion acceleration processes in three regions of the heliosphere are reviewed: at interplanetary travelling shocks near 1 AU, in the outer heliosphere and in cometary environments. Clear examples of diffusive acceleration events at quasi-parallel shocks as well as of shock drift acceleration events at ...
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Particle acceleration at shocks and magnetic turbulence in the interplanetary space
2019Dottorato Ricerca in Scienze e Tecnologie Fisiche, Chimiche e dei Materiali.
Chiappetta, Federica +2 more
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Particle Acceleration Processes in Interplanetary Space
1985The preceeding chapters have been concerned mainly with multiple scattering, diffusion, and convective transport of particles. In passing, some processes of particle energy variations have been considered, such as adiabatic deceleration in expanding streams of magnetic inhomogeneities (§8,1, 12, 13) and in large-scale magnetic fields frozen into the ...
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Acceleration of low‐energy protons and alpha particles at interplanetary shock waves
Journal of Geophysical Research: Space Physics, 1983We have investigated low‐energy protons and alpha particles in the energy range 30 keV/charge to 150 keV/charge associated with three different interplanetary shock waves in the immediate preshock and postshock region. The data were obtained with the Max‐Planck‐Institut/University of Maryland sensor system on ISEE 3.
M. Scholer +3 more
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The acceleration of energetic particle fluxes in shock fronts in interplanetary space
Canadian Journal of Physics, 1968On six occasions during 1966, enhanced fluxes of > 7.5-MeV energetic particles have been observed coincident with the onset of a Forbush decrease which was initiated by a solar flare. The anisotropic character of the particle fluxes indicates that the particles were not trapped and that particle acceleration was occurring in the region associated ...
U. R. Rao, K. G. McCracken, R. P. Bukata
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Energy spectrum of low-energy fluxes of particles accelerated by interplanetary shocks
Advances in Space Research, 1995Abstract The injection rate of particles at the front of interplanetary shocks has usually been studied locally, around the shock passage by the observer's position, but little is known of how the efficiency of the particle-acceleration process evolves as the shock propagates from the Sun to the Earth.
D Lario, B Sanahuja, A.M Heras
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Origin of coronal and interplanetary shock and particle acceleration of a flare/CME event
Advances in Space Research, 2003By using radio data from ground-based telescopes (from 270 MHz to 25 MHz), and from the Radio and Plasma Wave experiment (WAVES) on board the WIND spacecraft (1–14 MHz and several kHz-11 MHz), as well as FY -2 satellite data, the origin of coronal and interplanetary shock and particle acceleration of the 14 July 2000 flare/CME event (the Bastille day ...
Y.H. Tang, Y. Dai
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Particle acceleration and MHD wave excitation upstream of interplanetary shocks
Advances in Space Research, 1984The theory of diffusive shock acceleration and its application in interplanetary space are reviewed. Special emphasis is placed on the distinction between diffusive and shock-drift shock acceleration, on ion-excitation of MHD waves upstream of the shock and the resulting self-consistent configuration of waves and accelerated ions, and on the ...
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Time-dependent Acceleration of Solar Wind Particles at Interplanetary Traveling Shocks
AIP Conference Proceedings, 2008A time‐dependent focused transport model is used to model how solar wind protons are injected from the suprathermal tail of the solar wind distribution into diffusive shock acceleration at both a strong and a weak coronal mass ejection‐driven shock. It is discussed how the temporal evolution of the injection and acceleration process can result in solar
J. A. le Roux +6 more
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Space Science Reviews, 1995
We report the results of a study of the 12-hour average distribution functions of high Z nuclei as measured over a 10-day interval on the Ulysses spacecraft at a helioradius of ∼5.2 A.U. We use the good time and atomic mass resolution of the composition aperture of the HI-SCALE instrument to determine the form of the distribution functions for C, O, Ne,
L. J. Lanzerotti, C. G. Maclennan
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We report the results of a study of the 12-hour average distribution functions of high Z nuclei as measured over a 10-day interval on the Ulysses spacecraft at a helioradius of ∼5.2 A.U. We use the good time and atomic mass resolution of the composition aperture of the HI-SCALE instrument to determine the form of the distribution functions for C, O, Ne,
L. J. Lanzerotti, C. G. Maclennan
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