Effects of the solar wind termination shock and heliosheath on theheliospheric modulation of galactic and anomalous Helium [PDF]
Annales Geophysicae, 2004 The interest in the role of the solar wind termination shock and heliosheath in cosmic ray modulation studies has increased significantly as the Voyager 1 and 2 spacecraft approach the estimated position of the solar wind termination shock.
U. W. Langner, M. S. Potgieter
doaj +1 more source
The Astrophysical Journal, 2023 The origin of cosmic rays (CRs) above the knee in the spectrum is an unsolved problem. We present a wind model in which interstellar gas flows along a nonrotating, expanding flux tube with a changing speed and cross-sectional area.
Payel Mukhopadhyay +4 more
doaj +1 more source
Reforming perpendicular shocks in the presence of pickup protons: initial ion acceleration [PDF]
Annales Geophysicae, 2005 Acceleration processes associated with the heliospheric termination shock may provide a source of anomalous cosmic rays (ACRs). Recent kinetic simulations of supercritical, quasi-perpendicular shocks have yielded time varying shock solutions that ...
R. E. Lee +4 more
doaj +1 more source
A Comparison of Particle-in-cell and Hybrid Simulations of the Heliospheric Termination Shock
The Astrophysical Journal, 2023 We compare hybrid (kinetic proton, fluid electron) and particle-in-cell (kinetic proton, kinetic electron) simulations of the solar wind termination shock with parameters similar to those observed by Voyager 2 during its crossing.
M. Swisdak +5 more
doaj +1 more source
On the electron temperature downstream of the solar wind termination shock [PDF]
Annales Geophysicae, 2013 In this paper we study the temperatures of electrons convected with the solar wind to large solar distances and finally transported over the solar wind termination shock. Nearly nothing, unless at high energies in the cosmic ray regime, is known about
I. V. Chashei, H. J. Fahr
doaj +1 more source
An Anomalous Cosmic-Ray Mediated Termination Shock: Implications for Energetic Neutral Atoms
The Astrophysical Journal Letters, 2023 The Voyager 2 crossing of the termination shock indicated that most of the upstream energy from the thermal solar wind ions was transferred to pickup ions (PUIs) and other energetic particles downstream of the shock.
M. Kornbleuth +6 more
doaj +1 more source
The heliospheric modulation of cosmic ray protons during increased solar activity: effects of the position of the solar wind termination shock and of the heliopause [PDF]
Annales Geophysicae, 2005 The effects on the modulation of cosmic ray protons of different positions for the solar wind termination shock and for the heliopause are illustrated for moderate solar maximum conditions.
U. W. Langner +2 more
doaj +1 more source
Relating Energetic Ion Spectra to Energetic Neutral Atoms
The Astrophysical Journal, 2023 Heliospheric energetic neutral atoms (ENAs) originate from energetic ions that are neutralized by charge exchange with neutral atoms in the heliosheath and very local interstellar medium (VLISM).
Bingbing Wang +4 more
doaj +1 more source
Voyager 2 observation of the multifractal spectrum in the heliosphere and the heliosheath [PDF]
Nonlinear Processes in Geophysics, 2013 We look in detail at the multifractal scaling of the fluctuations in the interplanetary magnetic field strength as measured onboard Voyager 2 in the entire heliosphere and even in the heliosheath.
W. M. Macek, A. Wawrzaszek
doaj +1 more source
Interaction of a strong interplanetary shock with the termination shock [PDF]
Journal of Geophysical Research: Space Physics, 1999 The 1991 global merged interaction region (GMIR) shock is a strong forward shock observed from Voyager 2 on day 146 of 1991 at 34.6 AU. As the GMIR shock propagated out‐ward in the distant heliosphere, it eventually encounters the termination shock. We study the interaction of the GMIR shock with the termination shock taking into account the influence ...
J. Y. Lu, Y. C. Whang, L. F. Burlaga
openaire +2 more sources