Results 31 to 40 of about 1,935 (214)
Composition of inner-source heavy pickup ions at 1 AU: SOHO/CELIAS/CTOF observations [PDF]
, 2015 Context. Pickup ions in the inner heliosphere mainly originate in two sources, one interstellar and one in the inner solar system. In contrast to the interstellar source that is comparatively well understood, the nature of the inner source has not been ...
R. F. Wimmer-Schweingruber +3 more
core +1 more source
Energy Distribution of Pickup Ions at the Solar Wind Termination Shock [PDF]
, 2018 In-situ measurements taken by the Voyager 2 spacecraft suggest that the solar wind termination shock is significantly affected by the presence of pickup ions that are produced in the inner heliosphere due to charge exchange between interstellar neutrals ...
Spitkovsky, Anatoly +2 more
core +1 more source
Turbulence Driving by Interstellar Pickup Ions in the Outer Solar Wind
The Astrophysical Journal, 2023 We revisit the question of how the unstable scattering of interstellar pickup ions (PUIs) may drive turbulence in the outer solar wind and why the energy released into fluctuations by this scattering appears to be significantly less than the standard ...
Philip A. Isenberg +2 more
doaj +1 more source
INTERSTELLAR PICKUP ION PRODUCTION IN THE GLOBAL HELIOSPHERE AND HELIOSHEATH [PDF]
The Astrophysical Journal, 2016 ABSTRACT Interstellar pickup ions (PUIs) play a significant part in mediating the solar wind (SW) interaction with the interstellar medium. In this paper, we examine the details of spatial variation of the PUI velocity distribution function (VDF) in the SW by solving the PUI transport equation. We assume the PUI distribution is isotropic
Y. Wu, V. Florinski, X. Guo
openaire +2 more sources
Frontiers in Astronomy and Space Sciences, 2023 The distribution of turbulence in the heliosphere remains a mystery, due to the complexity in not only modeling the turbulence transport equations but also identifying the drivers of turbulence that vary with time and spatial location.
Bingbing Wang +8 more
doaj +1 more source
Stochastic Acceleration of ∼0.1–5 keV Pickup Ions in the Heliotail [PDF]
, 2018 We seek to understand the quantitative role of the dominant physical processes (charge-exchange, adiabatic heating, stochastic acceleration) governing the proton distribution in the heliotail using observations of hydrogen energetic neutral atoms (ENAs)
Heerikhuisen, J. +4 more
core +1 more source
Heliospheric and Interstellar Phenomena Deduced From Pickup ion Observations [PDF]
, 2001 Pickup ions, created by ionization of slow moving atoms and molecules well inside the heliosphere, provide us with a new tool to probe remote regions in and beyond the heliosphere and to study injection and acceleration processes in the solar wind ...
Gloeckler, George, Geiss, Johannes
core +1 more source
Observations of interstellar helium pickup ions in the inner heliosphere [PDF]
Journal of Geophysical Research: Space Physics, 2013 During the MESSENGER spacecraft's interplanetary trajectory to Mercury, the Fast Imaging Plasma Spectrometer (FIPS) measured the first helium pickup ion distributions at a heliocentric distance (R) ranging between 0.3 and 0.7 AU. From several transits of MESSENGER through the interstellar helium gravitational focusing cone, we map the cone structure in
Gershman, Daniel J. +7 more
openaire +3 more sources
A two-component transport model for solar wind fluctuations: Waves plus quasi-2D turbulence [PDF]
, 2010 We present a model for the transport of solar wind fluctuations, based on the assumption that they can be well-represented using two distinct components: a quasi-2D turbulence piece and a wave-like piece.
Matthaeus, William H. +3 more
core +1 more source
The Astrophysical Journal, 2023 Direct numerical simulations of three-dimensional compressible magnetohydrodynamic (MHD) turbulence have been performed in order to study the relation between wave modes and coherent structures and the consequent energization of test particles. Moreover,
F. Pugliese +3 more
doaj +1 more source