Results 41 to 50 of about 932 (205)
Temperature of the Polar Inner Heliosheath: Connection to Solar Activity
The Astrophysical Journal, 2023 We study the thermodynamics of the plasma protons in the polar regions of the inner heliosheath (IHS) and its connection with solar activity over solar cycle 24.
G. Livadiotis +2 more
doaj +1 more source
The Astrophysical Journal Letters, 2023 Measuring energetic neutral atoms (ENAs) allows for the remote observation of ion populations from the frontiers of our heliosphere. In this study, we compare the ENAs observed with the IBEX-Lo instrument onboard the Interstellar Boundary Explorer with ...
André Galli +9 more
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Energetic Neutral Atoms from the Heliosheath
The Astrophysical Journal, 2006 We present the measurement and analysis of hydrogen energetic neutral atoms (ENAs) recorded with the NPD sensor of the ASPERA-3 instrument on board Mars Express during the cruise phase and the Mars orbit phase. We conclude that the origin of these ENAs is the inner heliosheath. The ENA energy spectra are all very similar and can be fitted well by a two-
Wurz, Peter +3 more
openaire +2 more sources
The Astrophysical Journal, 2023 We present a time-dependent, three-dimensional single-fluid model for the transport of magnetohydrodynamic (MHD) turbulence that is self-consistently evolving with a dynamic large-scale solar wind in the outer heliosphere.
Jens Kleimann +3 more
doaj +1 more source
Energetic Neutral Atom Fluxes from the Voyager 1 and 2 Directions
The Astrophysical JournalIBEX observes a globally distributed energetic neutral atom (ENA) flux from the heliosheath and very local interstellar medium (VLISM). Over a 14 yr period, Voyager 1 and Voyager 2 traversed the heliosheath from the termination shock to the heliopause ...
Stephen A. Fuselier +13 more
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Breathing of heliospheric structures triggered by the solar-cycle activity [PDF]
Annales Geophysicae, 2003 Solar wind ram pressure variations occuring within the solar activity cycle are communicated to the outer heliosphere as complicated time-variabilities, but repeating its typical form with the activity period of about 11 years.
K. Scherer, H. J. Fahr
doaj +1 more source
Approximation of Daily AMS‐02 Spectra With Machine Learning Methods
Journal of Geophysical Research: Machine Learning and Computation, Volume 2, Issue 4, December 2025.Abstract Almost three thousand daily AMS‐02 proton spectra from 2011 to 2019 offer the most precise and extensive data set of cosmic ray spectra covering a wide energy range. As such, they offer a unique opportunity to test machine learning algorithms for approximating cosmic ray proton spectra based on the inputs usually available to solar modulation ...
Martin Nguyen, Pavol Bobík, Ján Genči
wiley +1 more source
The charge-exchange induced coupling between plasma-gas counterflows in the heliosheath [PDF]
Annales Geophysicae, 2003 Many hydrodynamic models have been presented which give similar views of the interaction of the solar wind plasma bubble with the counterstreaming partially ionized interstellar medium.
H. J. Fahr
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Alfvénic Contribution From the Solar Wind to Magnetospheric Dynamics
Space Weather, Volume 23, Issue 10, October 2025.Abstract This paper proposes for the first time a theoretical expression for the injection of energy from the solar wind into the ring current due to Alfvénic fluctuations. Using interplanetary and geomagnetic measurements, we select four case studies, validate our approach, and compute the parameters involved in the proposed expression.
E. Saiz, C. Cid
wiley +1 more source
Spectral Properties of Globally Distributed ENA Fluxes across Diverse Regions of the Heliosphere
The Astrophysical JournalThis study analyzes energetic neutral atom (ENA) spectral properties across distinct regions of globally distributed flux (GDF) sky maps, using Interstellar Boundary Explorer data from a full solar cycle, corrected for time dispersion.
Thomas K. Kim +16 more
doaj +1 more source