Results 11 to 20 of about 50 (47)

EISCAT measurements of the solar wind [PDF]

open access: yesAnnales Geophysicae, 1996
Abstract. EISCAT observations of interplanetary scintillation have been used to measure the velocity of the solar wind at distances between 15 and 130 R⊙ (solar radii) from the Sun. The results show that the solar wind consists of two distinct components, a fast stream with a velocity of ~800 km s–1 and a slow stream at ~400 km s–1.
Breen, A. R.   +7 more
openaire   +5 more sources

Minor Ions in the solar Wind [PDF]

open access: yesTransactions of the International Astronomical Union, 1988
It has been recently recognized that the presence of ions heavier than hydrogen determines to a large extent the dynamics of the expanding solar corona. In the following I shall give a brief account of the most recent results related to minor ions (i.e. He and ions heavier than helium).
Peter Bochsler, Peter Bochsler
openaire   +4 more sources

Solar wind and kinetic heliophysics [PDF]

open access: yesAnnales Geophysicae, 2018
Abstract. This paper reviews recent aspects of solar wind physics and elucidates the role Alfvén waves play in solar wind acceleration and turbulence, which prevail in the low corona and inner heliosphere. Our understanding of the solar wind has made considerable progress based on remote sensing, in situ measurements, kinetic simulation and fluid ...
E. Marsch, E. Marsch
openaire   +3 more sources

Multifractality and intermittency in the solar wind [PDF]

open access: yesNonlinear Processes in Geophysics, 2007
Abstract. Within the complex dynamics of the solar wind's fluctuating plasma parameters, there is a detectable, hidden order described by a chaotic strange attractor which has a multifractal structure. The multifractal spectrum has been investigated using Voyager (magnetic field) data in the outer heliosphere and using Helios (plasma) data in the inner
Wiesław M. Macek, Wiesław M. Macek
openaire   +5 more sources

Solar wind collisional heating [PDF]

open access: yesJournal of Plasma Physics, 2017
To properly describe heating in weakly collisional turbulent plasmas such as the solar wind, interparticle collisions should be taken into account. Collisions can convert ordered energy into heat by means of irreversible relaxation towards the thermal equilibrium. Recently, Pezzi et al. (Phys. Rev. Lett., vol. 116, 2016a, 145001) showed that the plasma
Pezzi, Oreste
openaire   +4 more sources

Solar Wind Sails [PDF]

open access: yes, 2012
Magnetic sail (MagSail) is a unique but never-realized interplanetary propulsion system. The original idea of MagSail proposed by Zubrin is depicted in Fig.1 (Andrews & Zubrin, 1990). A MagSail spacecraft has a hoop coil, and it produces an artificial magnetic field to reflect the solar wind particles approaching the coil, and the corresponding ...
Ikkoh Funaki, Hiroshi Yamakawa
openaire   +3 more sources

Wave Modeling of the Solar Wind [PDF]

open access: yesLiving Reviews in Solar Physics, 2010
The acceleration and heating of the solar wind have been studied for decades using satellite observations and models. However, the exact mechanism that leads to solar wind heating and acceleration is poorly understood. In order to improve the understanding of the physical mechanisms that are involved in these processes a combination of modeling and ...
openaire   +4 more sources

Turbulence in the Solar Wind

open access: yes, 2016
Indice: Introduction, Equations and Phenomenology, Early Observations of MHD Turbulence, Turbulence Studied via Elsässer Variables, Compressive Turbulence, A Natural Wind Tunnel, Intermittency Properties in the 3D Heliosphere, Solar Wind Heating by the Turbulent Energy Cascade, Conclusions and ...
Roberto Bruno, Vincenzo Carbone
openaire   +2 more sources

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