Results 21 to 30 of about 1,774 (287)
Unexpected sites of efficient stochastic acceleration in the inner heliosheath [PDF]
Annales Geophysicae, 2007 Up until the recent past, it was generally believed that the solar wind termination shock (TS) is the favourite site to accelerate ions from the keV- to the MeV- energy levels by means of Fermi-1 processes.
S. V. Chalov +3 more
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Neutral solar wind generated by lunar exospheric dust at the terminator [PDF]
Journal of Geophysical Research: Space Physics, 2009 We calculate the flux of neutral solar wind observed on the lunar surface at the terminator due to solar wind protons penetrating exospheric dust grains with (1) radii greater than 0.1 μm and (2) radii greater than 0.01 μm. For grains with radii larger than 0.1 μm, the ratio of the neutral solar wind flux produced by exospheric dust to the incident ...
Collier, Michael R., Stubbs, Timothy J.
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On the heliolatitudinal variation of the galactic cosmic-ray intensity. Comparison with Ulysses measurements [PDF]
Annales Geophysicae, 2003 We study the dependence of cosmic rays with heliolatitude using a simple method and compare the results with the actual data from Ulysses and IMP spacecraft.
G. Exarhos, G. Exarhos, X. Moussas
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COMPARING SHOCKS IN PLANETARY NEBULAE WITH THE SOLAR WIND TERMINATION SHOCK [PDF]
The Astrophysical Journal, 2010 We show that suprathermal particles, termed pick-up ions (PUIs), might reduce the postshock temperature of the fast wind and jets in some planetary nebulae (PNs) and in symbiotic systems. The goal is to explain the finding that the temperature of the hot bubble formed by the post-shock gas in some PNs and symbiotic nebulae is lower, sometimes by more ...
Soker, Noam +3 more
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Pickup Ion–Mediated Magnetic Reconnection in the Outer Heliosphere
The Astrophysical Journal Letters, 2023 Pickup ions (PUIs) play a crucial role in the heliosphere, contributing to the mediation of large-scale structures such as the distant solar wind, the heliospheric termination shock, and the heliopause.
M. Nakanotani, G. P. Zank, L.-L. Zhao
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Consequences of the Solar System passage through dense interstellar clouds [PDF]
Annales Geophysicae, 2003 Several consequences of the passage of the solar system through dense interstellar molecular clouds are discussed. These clouds, dense (more than 100 cm-3), cold (10–50 K) and extended (larger than 1 pc), are characterized by a gas-to-dust mass ...
A. G. Yeghikyan +2 more
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Major Δ14C excursions during the late glacial and early Holocene: changes in ocean ventilation or solar forcing of climate change? [PDF]
, 2003 The atmospheric 14C record during the Late Glacial and the early Holocene shows sharp increases simultaneous with cold climatic phases. These increases in the atmospheric 14C content are usually explained as the effect of reduced oceanic CO2 ventilation ...
Geel, B. van +9 more
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The Modulation of Anomalous and Galactic Cosmic-Ray Oxygen over Successive Solar Cycle Minima
The Astrophysical Journal, 2023 Both the recent 2009 and 2020 solar minima were classified as unusually quiet and characterized with unusually high galactic cosmic-ray (GCR) levels. However, unlike the trends from previous decades, in which anomalous cosmic-ray (ACR) and GCR levels ...
R. D. Strauss, R. A. Leske, J. S. Rankin
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A weaker solar wind termination shock [PDF]
Geophysical Research Letters, 1997 In a recent analysis of anomalous cosmic ray spectra during 1994, Stone et al. [1996] derived a position and compression ratio for the solar wind termination shock of R ≈ 85 AU and ndownstream/nupstream ≈ 2.6, respectively. This compression ratio indicates a fairly weak shock, with Mach number M ≈ 2.4 if the magnetic field can be ignored.
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Frontiers in Astronomy and Space Sciences, 2023 Combined in situ observations of the interstellar wind through the solar system and of its pickup ions (PUIs), implanted after ionization in the solar wind, explain, in comparison with interstellar absorption lines of nearby stars, that the Sun is in an ...
Eberhard Möbius
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