Results 1 to 10 of about 29,228 (45)

Turbulence, intermittency and cross-scale energy transfer in an interplanetary coronal mass ejection [PDF]

, 2022
Solar wind measurements carried out by NASA's Wind spacecraft before, during and after the passing of an interplanetary coronal mass ejection (ICME) detected on 12-14 September 2014 have been used in order to examine several properties of magnetohydrodynamic (MHD) turbulence.
arxiv   +1 more source

Quiet time particle acceleration in interplanetary space [PDF]

Astron.Astrophys.432:1049-1056,2005, 2004
We propose a model for the acceleration of charged particles in interplanetary space that appear during quiet time periods, that is, not associated with solar activity events like intense flares or coronal mass ejections. The interaction of charged particles with modeled turbulent electromagnetic fields, which mimic the fields observed in the ...
arxiv   +1 more source

Diagnosing Turbulence in the Neutral and Molecular Interstellar Medium of Galaxies [PDF]

, 2021
Magnetohydrodynamic (MHD) turbulence is a crucial component of the current paradigms of star formation, dynamo theory, particle transport, magnetic reconnection and evolution of structure in the interstellar medium (ISM) of galaxies. Despite the importance of turbulence to astrophysical fluids, a full theoretical framework based on solutions to the ...
arxiv   +1 more source

Resonance Broadening Induced Nonlinear Saturation of Kinetic Alfven Turbulence in the Interplanetary Plasma [PDF]

Phys. Letters A, v.219, p.293 (1996), 1996
The saturation of ion cyclotron Alfven turbulence excited by beam particles is investigated using resonance broadening theory. The stochastic scattering which decorrelates particles, includes both random acceleration by electric fields and a turbulent magnetic mirroring effect.
arxiv   +1 more source

Simulations of Electron Magnetohydrodynamic Turbulence [PDF]

Astrophys.J.701:236-252,2009, 2009
We present numerical simulations of electron magnetohydrodynamic (EMHD) and electron reduced MHD (ERMHD) turbulence. Comparing scaling relations, we find that both EMHD and ERMHD turbulence show similar spectra and anisotropy. We develop new techniques to study anisotropy of EMHD turbulence.
arxiv   +1 more source

Properties and selected implications of magnetic turbulence for interstellar medium, Local Bubble and solar wind [PDF]

, 2008
Astrophysical fluids, including interstellar and interplanetary medium, are magnetized and turbulent. Their appearance, evolution, and overall properties are determined by the magnetic turbulence that stirs it. We argue that examining magnetic turbulence at a fundamental level is vital to understanding many processes.
arxiv   +1 more source

In-situ Observation Of Alfv'en Waves In Icme Shock-Sheath Indicates Existence Of Alfv'enic Turbulence [PDF]

arXiv, 2022
The dynamic evolution of coronal mass ejection (CME) in interplanetary space generates highly turbulent, compressed, and heated shock-sheath. This region furnishes a unique environment to study the turbulent fluctuations at the small scales and serve an opportunity for unfolding the physical mechanisms by which the turbulence is dissipated and plasma ...
arxiv  

On the intermittent character of interplanetary magnetic field fluctuations [PDF]

, 2007
Interplanetary magnetic field magnitude fluctuations are notoriously more intermittent than velocity fluctuations in both fast and slow wind. This behaviour has been interpreted in terms of the anomalous scaling observed in passive scalars in fully developed hydrodynamic turbulence.
arxiv   +1 more source

Particle Acceleration at Interplanetary Shocks [PDF]

AIP Conf.Proc.1039:240-245,2008, 2008
The acceleration of interstellar pick-up ions as well as solar wind species has been observed at a multitude of interplanetary (IP) shocks by different spacecraft. This paper expands upon previous work modeling the phase space distributions of accelerated ions associated with the shock event encountered on day 292 of 1991 by the Ulysses mission at 4.5 ...
arxiv   +1 more source

Chaos, complexity, and intermittent turbulence in space plasmas [PDF]

arXiv, 2022
Intermittent turbulence is key for understanding the stochastic nonlinear dynamics of space, astrophysical, and laboratory plasmas. We review the observation and theory of chaos and complexity in plasmas, and elucidate their links to intermittent plasma turbulence. First, we present evidence of magnetic reconnection and intermittent magnetic turbulence
arxiv