Results 91 to 100 of about 13,753 (202)

A Tempered Fractional Kinetic Transport Theory for Energetic Particle Interaction with Quasi-two-dimensional Turbulence in the Large-scale Solar Wind

The Astrophysical Journal
Observational evidence is accumulating that turbulence in the solar wind is intermittent (non-Gaussian) because of the strong presence of a quasi-two-dimensional (quasi-2D), low-frequency turbulence component containing nonpropagating, closed, small ...
J. A. le Roux
doaj   +1 more source

The acceleration of energetic particles in the interplanetary medium by transit time damping [PDF]

Journal of Geophysical Research, 1976
It has been reported recently by McDonald et al. (1976) that 1-MeV protons may undergo considerable acceleration in corotating streams. It has been suggested recently by Fisk et al. (1974b) that interstellar neutral particles which are ionized in the solar cavity may be accelerated in the solar wind and may account for the anomalous component that is ...
openaire   +1 more source

The Diffusion and Scattering of Accelerating Particles in Compressible MHD Turbulence

The Astrophysical Journal
We numerically study the diffusion and scattering of cosmic rays (CRs) together with their acceleration processes in the framework of the modern understanding of magnetohydrodynamic (MHD) turbulence. Based on the properties of compressible MHD turbulence
Na-Na Gao, Jian-Fu Zhang
doaj   +1 more source

Compression Acceleration of Protons and Heavier Ions at the Heliospheric Current Sheet

The Astrophysical Journal
Recent observations by the Parker Solar Probe (PSP) suggest that protons and heavier ions are accelerated to high energies by magnetic reconnection at the heliospheric current sheet (HCS).
Giulia Murtas, Xiaocan Li, Fan Guo
doaj   +1 more source

Electromagnetic and corpuscular emission from the solar flare of 1991 June 15: Continuous acceleraton of relativistic particles [PDF]

, 1993
Data on X-,γ-ray, optical and radio emission from the 1991 June 15 solar flare are considered. We have calculated the spectrum of protons that producesγ-rays during the gradual phase of the flare.
Armstrong, T. P., Chuikin, E. I., Kocharov, G. E., Kocharov, L. G., Kovaltsov, G. A., Melnikov, V. F., Podstrigach, T. S., Shea, M. A., Smart, D. F., Usoskin, I. G., Zirin, H.   +10 more
core   +1 more source

Electron Power-Law Spectra in Solar and Space Plasmas

, 2018
Particles are accelerated to very high, non-thermal energies in solar and space plasma environments. While energy spectra of accelerated electrons often exhibit a power law, it remains unclear how electrons are accelerated to high energies and what ...
Battaglia, M., Birn, J., Chaston, C. C., Effenberger, F., Eriksson, E., Hatch, S. M., Imada, S., Khotyaintsev, Y. V., Kuhar, M., Livadiotis, G., Miyoshi, Y., Oka, M., Retinò, A.   +12 more
core   +3 more sources

Electron Acceleration at Shock Ripples: Role of Pitch-angle Diffusion

The Astrophysical Journal
Suprathermal electrons are routinely observed in interplanetary space. At higher energies, there are in-situ evidences that shocks, both interplanetary shocks, often driven by fast coronal mass ejections, and terrestrial bow shocks, can accelerate ...
Y. D. Xu, G. Li, S. Yao
doaj   +1 more source

Problems and Progress in Flare Fast Particle Diagnostics

, 2005
Recent progress in the diagnosis of flare fast particles is critically discussed with the main emphasis on high resolution Hard X-Ray (HXR) data from RHESSI and coordinated data from other instruments. Spectacular new photon data findings are highlighted
Alexander, Aschwanden, Brown, Brown, Brown, Brown, Brown, Eduard P. Kontar, Emslie, Emslie, Fleishman, Fletcher, Haydock, Hurford, John C. Brown, Johns, Kane, Kane, Kontar, Kontar, Kontar, Kontar, Kontar, Kosugi, Lin, Lin, Lin, Massone, Melnik, Melnik, Neupert, Piana, Schmahl, Smith, Thompson, Veronig, Vilmer   +36 more
core   +2 more sources

Electron Acceleration in Magnetic Reconnection-driven Turbulence in the Earth’s Magnetotail

The Astrophysical Journal
The Magnetospheric Multiscale mission has identified regions of magnetic reconnection surrounded by strong turbulence associated with particle acceleration in the Earth’s magnetotail.
R. E. Ergun, Y. Qi, T. Vo, A. Chasapis, N. Pathak, M. E. Usanova, D. Sega, N. Ahmadi, H. George, S. J. Schwartz   +9 more
doaj   +1 more source

Penetrating particle ANalyzer (PAN)

, 2019
PAN is a scientific instrument suitable for deep space and interplanetary missions. It can precisely measure and monitor the flux, composition, and direction of highly penetrating particles ($> \sim$100 MeV/nucleon) in deep space, over at least one full ...
Ambrosi, G., Azzarello, P., Bergmann, B., Bertucci, B., Cadoux, F., Campbell, M., Duranti, M., Ionica, M., Kole, M., Krucker, S., Maehlum, G., Meier, D., Paniccia, M., Pinsky, L., Plainaki, C., Pospisil, S., Stein, T., Thonet, P. A., Tomassetti, N., Tykhonov, A., Wu, X.   +20 more
core   +1 more source