Results 261 to 270 of about 119,236 (313)
Some of the next articles are maybe not open access.
ACCELERATION OF THE SOLAR WIND
Space Science Reviews, 1982In this review, we discuss critically recent research on the acceleration of the solar wind, giving emphasis to high-speed solar wind streams emanating from solar coronal holes. We first explain why thermally driven wind models constrained by solar and interplanetary observations encounter substantial difficulties in explaining high speed streams. Then,
Egil Leer, Thomas E. Holzer, Tor Flå
openaire +1 more source
Solar and solar-wind isotopic compositions
Earth and Planetary Science Letters, 2004With only a few exceptions, the solar photosphere is thought to have retained the mean isotopic composition of the original solar nebula, so that, with some corrections, the photosphere provides a baseline for comparison of all other planetary materials. There are two sources of information on the photospheric isotopic composition: optical observations,
Wiens, Roger C. +3 more
openaire +2 more sources
Turbulence in the Solar Atmosphere and Solar Wind
Space Science Reviews, 2010The objective of this review article is to critically analyze turbulence and its role in the solar atmosphere and solar wind, as well as to provide a tutorial overview of topics worth clarification. Although turbulence is a ubiquitous phenomenon in the sun and its heliosphere, many open questions exist concerning the physical mechanisms of turbulence ...
Petrosyan, A. +8 more
openaire +3 more sources
Deimos: An Obstacle to the Solar Wind
Science, 1995Two isolated solar wind disturbances about 5 minutes in duration were detected aboard the Russian spacecraft Phobos-2 upon its crossing the wake of the martian moon Deimos about 15,000 kilometers downstream from the moon on 1 February 1989.
Sauer, K. +3 more
openaire +3 more sources
Solar Physics, 1985
The current status of our understanding of the nature and origin of the solar wind is briefly reviewed, with emphasis being placed on the need for wave-particle interactions to account for the main energy source as well as details of the particle distribution functions.
openaire +2 more sources
The current status of our understanding of the nature and origin of the solar wind is briefly reviewed, with emphasis being placed on the need for wave-particle interactions to account for the main energy source as well as details of the particle distribution functions.
openaire +2 more sources
Space Science Reviews, 1983
Some advances in the hydrodynamical large-scale theory, on the one hand, and in the kinetic theory, on the other hand, of the solar wind are reviewed. For brevity, we sketch the general frame, point out the problems and approaches and then illustrate by a few examples the ways in which progress has been achieved during the past four years.
openaire +1 more source
Some advances in the hydrodynamical large-scale theory, on the one hand, and in the kinetic theory, on the other hand, of the solar wind are reviewed. For brevity, we sketch the general frame, point out the problems and approaches and then illustrate by a few examples the ways in which progress has been achieved during the past four years.
openaire +1 more source
Interdependence of solar wind models and solar wind observations
AIP Conference Proceedings, 1997A brief overview of the observations in the inner corona is presented together with three different solar wind models. It is shown that the very high flow speeds derived from the observations in the inner corona can be modeled if either the proton temperature is extremely high, or if there exists a mechanism that adds momentum to the flow much closer ...
Ruth Esser, Nancy S. Brickhouse
openaire +1 more source
Planetary and Space Science, 1967
The historical evidence that the Sun is a constant source of an outwardflowing supersonic stream of ionized hydrogen and helium now called the solar wind has been confirmed by many recent satellite measurements. Although the intensity of the wind varies and increases greatly as a result of sunspot activity on the solar surface, normally during quiet ...
openaire +2 more sources
The historical evidence that the Sun is a constant source of an outwardflowing supersonic stream of ionized hydrogen and helium now called the solar wind has been confirmed by many recent satellite measurements. Although the intensity of the wind varies and increases greatly as a result of sunspot activity on the solar surface, normally during quiet ...
openaire +2 more sources
1991
The solar wind is, apparently, a turbulent medium permeated by fluctuations on a broad range of scales characterizing the plasma as a fluid and kinetic entity. Here we briefly review some recent developments and observations on MHD fluctuations in the frequency range between some 10−6 and 10−2 Hz.
openaire +2 more sources
The solar wind is, apparently, a turbulent medium permeated by fluctuations on a broad range of scales characterizing the plasma as a fluid and kinetic entity. Here we briefly review some recent developments and observations on MHD fluctuations in the frequency range between some 10−6 and 10−2 Hz.
openaire +2 more sources
2001
Shortly before the beginning of the space age, Eugene N. Parker of the University of Chicago predicted that interplanetary space would be filled with a plasma flowing rapidly outward from the Sun (Parker 1958). The likelihood that the Sun ejects charged particles that cause auroral and magnetic activity on Earth was generally accepted by that time. The
Marcia Neugebauer, Rudolf Von Steiger
openaire +1 more source
Shortly before the beginning of the space age, Eugene N. Parker of the University of Chicago predicted that interplanetary space would be filled with a plasma flowing rapidly outward from the Sun (Parker 1958). The likelihood that the Sun ejects charged particles that cause auroral and magnetic activity on Earth was generally accepted by that time. The
Marcia Neugebauer, Rudolf Von Steiger
openaire +1 more source