Results 111 to 120 of about 1,935 (214)

A hemispherical model of anisotropic interstellar pickup ions [PDF]

Journal of Geophysical Research: Space Physics, 1997
We present an analytical model for the distribution function of interstellar pickup ions in a radially directed heliospheric magnetic field which naturally results in anisotropic particle distributions. The model includes the effects of convection and spatial transport in the solar wind, adiabatic deceleration in the radial flow, adiabatic focusing in ...
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He pickup ions in the inner heliosphere-diagnostics of the local interstellar gas and of interplanetary conditions [PDF]

, 2010
The relative motion of the Sun through the Local Interstellar Cloud (LIC) leads to a neutral wind through the heliosphere. Because of its high ionization potential, He remains neutral to well within 1 AU, where it is deflected by the Sun’s gravity and ...
Klecker, B., Galvin, A. B., Farrugia, C., J. G. Luhmann, G. Gloeckler, Kistler, L., Wurz, P., Bochsler, P., Wimmer-Schweingruber, R., Kucharek, H., Galvin, A., Andrew J. Coates, K. D. C. Simunac, C. Farrugia, P. Wurz, E. Möbius, Russell, C. T., H. Kucharek, Gary P. Zank, Vladimir Florinski, Russell, C., Möbius, E., M. A. Popecki, Ellis, L., P. Bochsler, L. M. Kistler, L. Ellis, Gloeckler, G., Simunac, K., Wurz, Peter, Popecki, M. A., Kistler, L. M., Jakobus le Roux, Wimmer-Schweingruber, R. F., Luhmann, J. G., Popecki, M., R. F. Wimmer-Schweingruber, C. T. Russell, B. Klecker, Simunac, K. D. C., Luhmann, J., A. B. Galvin   +41 more
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The Effects of Turbulence on Heliosheath Ions and Implications for Energetic Neutral Atoms

The Astrophysical Journal
The distribution of ions in the heliosheath—the region between the heliospheric termination shock and the heliopause—is important for understanding remote observations of energetic neutral atoms (ENAs).
Senbei Du, Merav Opher, Joe Giacalone, Fan Guo, John D. Richardson, Bertalan Zieger   +5 more
doaj   +1 more source

Lunar Neutral Exposphere Properties from Pickup Ion Analysis [PDF]

, 2009
Composition and structure of neutral constituents in the lunar exosphere can be determined through measurements of phase space distributions of pickup ions borne from the exosphere [1].
Hartle, R. E., Yokota, S., Sarantos, M., Killen, R., Halekas, J., Sittler, E. C. Jr., Saito, Y.   +6 more
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Stability of Adiabatic Processes and Evolution of Pickup Ion Dimensionality

The Astrophysical Journal
In adiabatic processes, such as in many space plasmas, particles flow with no heat entering or exiting their system, while, more generally, the difference between polytropic and adiabatic indices provides a measure of any heating.
G. Livadiotis, D. J. McComas
doaj   +1 more source

Effects of anomalous cosmic rays on the solar wind events in the outer heliosphere

Frontiers in Astronomy and Space Sciences
Anomalous cosmic-rays (ACRs) are thought to be originated from the acceleration of pickup ions (PUIs) at the termination shock or interplanetary shocks, and play important role for the plasma dynamics in the outer heliosphere. Due to limited observation,
Yucheng Zhou, Yucheng Zhou, Xiaocheng Guo, Xiaocheng Guo, Chi Wang, Chi Wang   +5 more
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SH.4.1.05 1 Pickup Ion Injection and Acceleration at Perpendicular Shocks [PDF]

, 2008
Results from a multiscale hybrid kinetic simulation of low plasma beta supercritical perpendicular shocks are presented. Freshly ionized pickup ions are included self-consistently.
G. P. Zank, A. S. Lipatov
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PUI Heating in the Supersonic Solar Wind

The Astrophysical Journal
The outer heliosphere is profoundly influenced by nonthermal energetic pickup ions (PUIs), which dominate the internal pressure of the solar wind beyond ~10 au, surpassing both solar wind and magnetic pressures.
Parisa Mostafavi, Laxman Adhikari, Bishwas L. Shrestha, Gary P. Zank, Merav Opher, Matthew E. Hill, Heather A. Elliott, Pontus C. Brandt, Ralph L. McNutt, David J. McComas, Andrew R. Poppe, Elena Provornikova, Romina Nikoukar, Peter Kollmann, S. Alan Stern, Kelsi N. Singer, Anne Verbiscer, Joel Parker   +17 more
doaj   +1 more source

Pickup Ions in the Heliosphere

, 2018
Particles that have been ionized from neutrals in the interplanetary space within the heliosphere are called PickUp Ions (PUIs). The freshly created ions are injected into the solar wind plasma with a characteristic Velocity Distribution Function (VDF) and carried outwards jointly with the solar wind and its embedded Interplanetary Magnetic Field (IMF).
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Pickup Ion Injection and Acceleration at Perpendicular Shocks [PDF]

, 1999
26th International Cosmic Ray Conference. August 17-25, 1999. Salt Lake City, Utah, USAResults from a multiscale hybrid kinetic simulation of low plasma beta supercritical perpendicular shocks are presented.
Zank, G. P., Lipatov, Alexander
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