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Nongyrotropic (gyrophase bunched) ion distributions in a magnetoplasma are studied by analytical methods and by two-dimensional hybrid code simulations. Nongyrotropy may not occur in a plasma being simultaneously homogeneous, stationary, and solenoi-dal in phase space. A detailed study is performed for a homogeneous and stationary plasma with sources and(More)
Ministry of the Aegean, and the Greek Ministry of Development. It was attended by 85 scientists from 13 countries, and included six sessions on topics ranging from Interplanetary Disturbances to Particle Acceleration. In addition to the six sessions a panel discussion session was held. Seven scientists reported on recent advances, open questions and future(More)
Music therapy, as a part of arts therapies, is used as a therapeutical tool for restoring, maintaining and improving the mental, physical and emotional health of human beings. The main mission of receptive music therapy is not found on the performance level, but on the level of attentive and intimate music listening that is not passive at all, contributing(More)
The Solar, Anomalous, and Magnetospheric Particle Explorer, SAMPEX, will carry out energetic particle studies of outstanding scientific questions in the fields of space plasma physics, solar physics, magnetospheric and middle atmospheric physics, and cosmic ray physics. SAMPEX will measure the electron and ion composition of energetic particle populations(More)
Particle acceleration is one of the most important topics in plasma astrophysics as well as in cosmic-ray astrophysics. The heliosphere is an ideal astrophysical laboratory, wherein one can observe in situ the elementary mechanisms involved in the particle acceleration processes. Two phenomena of special interest are stochastic acceleration in the(More)
Conclusive evidence is presented for the existence of energetic ( approximately 535,0000 to 150,000 electron volts), heavy (>-12 atomic mass units), singly charged cometary ions within approximately 1.5 x 10(6) kilometers of comet Giacobini-Zinner. The observations were made with the University of Maryland/Max-Planck-Institut ultralow-energy charge analyzer(More)
We have performed 3 one-dimensional full particle electromagnetic simulations of a quasi-perpendicular shock with the same Alfvén Mach number M A ∼5, shock normal-magnetic field angle Bn =87 • and ion and electron beta (particle to magnetic field pressure) of 0.1. In the first run we used an ion to electron mass ratio close to the physical one (m i /m e(More)
The everyday notions about shock waves originate in our knowledge and experience related to supersonic airplanes and blasts of explosion. In an ordinary gas the collisions between the gas particles transfer the momentum and energy, and allow the sound wave to exist. The sound wave propagation through a medium is an adiabatic process. After the sound wave(More)
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