Results 11 to 20 of about 1,018 (176)
Interplanetary and interstellar plasma turbulence [PDF]
Plasma Physics and Controlled Fusion, 2007 Theoretical approaches to low-frequency magnetized turbulence in collisionless and weakly collisional astrophysical plasmas are reviewed. The proper starting point for an analytical description of these plasmas is kinetic theory, not fluid equations. The anisotropy of the turbulence is used to systematically derive a series of reduced analytical models.
Schekochihin, A, Cowley, S, Dorland, W
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SCATTERING OF PULSAR RADIO EMISSION BY THE INTERSTELLAR PLASMA [PDF]
The Astrophysical Journal, 2010 We present simulations of scattering phenomena which are important in pulsar observations, but which are analytically intractable. The simulation code, which has also been used for solar wind and atmospheric scattering problems, is available from the authors.
Coles, W. A. +4 more
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DYNAMIC SPECTRAL MAPPING OF INTERSTELLAR PLASMA LENSES [PDF]
The Astrophysical Journal, 2016 ABSTRACT Compact radio sources sometimes exhibit intervals of large, rapid changes in their flux density, due to lensing by interstellar plasma crossing the line of sight. A novel survey program has made it possible to discover these “Extreme Scattering Events” (ESEs) in real time, resulting in a high-quality dynamic spectrum of an ESE ...
Artem V. Tuntsov +7 more
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Plasmoid Instability in the Multiphase Interstellar Medium
The Astrophysical Journal Letters, 2023 The processes controlling the complex clump structure, phase distribution, and magnetic field geometry that develop across a broad range of scales in the turbulent interstellar medium (ISM) remain unclear.
Drummond B. Fielding +2 more
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Compressible Magnetohydrodynamic Turbulence in Interstellar Plasmas [PDF]
The Astrophysical Journal, 2001 Radio wave scintillation observations reveal a nearly Kolmogorov spectrum of density fluctuations in the ionized interstellar medium. Although this density spectrum is suggestive of turbulence, no theory relevant to its interpretation exists. We calculate the density spectrum in turbulent magnetized plasmas by extending the theory of incompressible ...
Lithwick, Yoram, Goldreich, Peter
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The charge-exchange induced coupling between plasma-gas counterflows in the heliosheath [PDF]
Annales Geophysicae, 2003 Many hydrodynamic models have been presented which give similar views of the interaction of the solar wind plasma bubble with the counterstreaming partially ionized interstellar medium.
H. J. Fahr
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Interstellar Scintillation and Clouds of the Interstellar Turbulent Plasma [PDF]
International Astronomical Union Colloquium, 2001 AbstractData on interstellar diffraction and refraction scintillation of pulsars are analyzed. Comparison between theory and the observational data shows that two types of spectra for electron density fluctuations are realized in the interstellar medium: pure power law and piecewise with a break. The distribution of turbulent plasma in the Galaxy has a
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INTERSTELLAR MEDIUM AND DECAMETER RADIO SPECTROSCOPY [PDF]
Radio Physics and Radio Astronomy, 2021 Purpose: The analytical review of the main results of research in the new direction of the low-frequency radio astronomy, the interstellar medium radio spectroscopy at decameter waves, which had led to astrophysical discovery, recording of the radio ...
S. V. Stepkin +3 more
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The Cygnus Loop: Shock Precursors and Electron–Ion Equilibration
The Astrophysical Journal, 2023 The outermost edges of some supernova remnants are marked by filaments of pure Balmer line emission produced by nonradiative shock fronts. The H α profiles of these filaments provide the shock speed and electron–proton temperature ratio in the shock.
John C. Raymond +7 more
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Solar wind heating by an embedded quasi-isothermal pick-up ion fluid [PDF]
Annales Geophysicae, 2002 It is well known that the solar wind plasma consists of primary ions of solar coronal origin and secondary ions of interstellar origin. Interstellar H-atoms penetrate into the inner heliosphere and when ionized there are converted into secondary ...
H. J. Fahr, H. J. Fahr
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