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The Heliosphere in the Local Interstellar Medium : Proceedings of the First ISSI Workshop 6-10 November 1995, Bern, Switzerland

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概要 In summary, we can conclude that the contributions of the different ionization processes to the total ionization rate for the most abundant interstellar species are basically known. The ionization of ...the noble gases He and Ne is almost completely dominated by photoionization, whereas for H charge-exchange with the solar wind is most important. For other species, such as 0 and Ar, both processes contribute significantly. Electron impact ionization can typically contribute by '" 10% to the total rate in the inner Solar System. Because direct measurements of the solar EUV flux are not yet continuously available, the variation of the ionization rate over the solar cycle still contains a relatively large uncertainty. The recent measurements of pickup ion distributions and of the neutral helium gas provide an independent tool to determine the total ionization rate that can be used to cross calibrate with the results obtained for the individual ionization processes. Acknowledgements The authors are grateful to M. Allen for supplying us with new data on photoioniza tion cross-sections compiled by him. We thank also M. Gruntman for drawing our attention to and support in collecting the most recent data on charge-exchange cross-sections. D. R. was supported by grant No. 2 P03C. 004. 09 from the Com mittee for Scientific Research (Poland). This work was also supported in part through NASA contract NAS7-918, NSF Grant INT-911637, NASA Grant NAGW- 2579.続きを見る
目次 Science as an Adventure
The Heliosphere
The Heliosphere
The Heliospheric Magnetic Field
The Solar Wind: A Turbulent Magnetohydrodynamic Medium
Voyager Observations of the Magnetic Field, Interstellar Pickup Ions and Solar Wind in the Distant Heliosphere
Origin of C+ Ions in the Heliosphere
Radio Emissions from the Outer Heliosphere
A Summary of Solar Wind Observations at High Latitudes: Ulysses
Ionization Processes in the Heliosphere - Rates and Methods of Their Determination
3-D Magnetic Field and Current System in the Heliosphere
Modelling the Heliosphere
The Termination Shock
The Termination Shock of the Solar Wind
Composition of Anomalous Cosmic Rays and Implications for the Heliosphere
Implications of a Weak Termination Shock
The Acceleration of Pickup Ions
The Isotopic Composition of Anomalous Cosmic Rays from SAMPEX
The Local Interstellar Medium
GHRS Observations of the LISM
In Situ Measurements of Interstellar Dust with the Ulysses and Galileo Spaceprobes
The Local Bubble, Current State of Observations and Models
The Local Bubble, Origin and Evolution
The Interstellar Gas Flow Through the Heliospheric Interface Region
LISM Structure - Fragmented Superbubble Shell?
Relative Ionizations in the Nearest Interstellar Gas
Properties of the Interstellar Gas Inside the Heliosphere
Local Clouds: Distribution, Density and Kinematics Through Ground-Based and HST Spectroscopy
Possible Shock Wave in the Local Interstellar Plasma, Very Close to the Heliosphere
Interstellar Grains in the Solar System: Requirements for an Analysis
Modelling of the Interstellar Hydrogen Distribution in the Heliosphere
Observations of the Local Interstellar Medium with the Extreme Ultraviolet Explorer
Recent Results on the Parameters of the Interstellar Helium from the Ulysses/GAS Experiment
Interaction Between HS And Lism
Physical and Chemical Characteristics of the ISM Inside and Outside the Heliosphere
Axisymmetric Self-Consistent Model of the Solar Wind Interaction with the LISM: Basic Results and Possible Ways of Development
UV Studies and the Solar Wind
Quasilinear Relaxation of Interstellar Pickup Ions
The Abundance of Atomic 1H, 4He, and 3He in the Local Interstellar Cloud from Pickup Ion Observations with SWICS on Ulysses
Physics of Interplanetary and Interstellar Dust
Relations Between ISM Inside and Outside the Heliosphere
The Local Interstellar Medium Viewed Through Pickup Ions, Recent Results and Future Perspectives
Moment Equation Description of Interstellar Hydrogen
Pickup Protons in the Heliosphere
Author index.
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登録日 2020.06.27
更新日 2020.06.28