Univ.-Prof.

Einleitung - I. Die Handschrift | II. Die Edition | Texte | Indices | Korrekturen und Nachträge zum 12. Band

Der vorliegende Bericht beschränkt sich auf die Wiedergabe der wesentlichen physikalischen Daten und Erkenntnisse aus der Beobachtung der interessierenden Parameter über den vollen Sonnenzyklus 23 (ca. 11 Jahre). Er ergänzt und erweitert erkenntnismäßig erheblich den im Jahr 2002 in deutscher Sprache abgefassten Projektbericht 4 dieser Kommission. From the contents: 

Observational Background; Statistics of Range Errors >0,5 m caused by Ionospheric Anomalies not associated with Space Weather; Total Electron Content (TEC) as non-linear Function of Solar EUV Irradiance; Conclusions; References; Figure Captions 

Solar Cycle Influence of GPS Range Error From Mesoscale Ionospheric Anomalies (MSTDIs)

Einfluss des Sonnenzyklus auf GPS-Distanzmessfehler durch mesoskalige ionosphärische Anomalien (MSTIDs) 

Foreword | Jovian Radio Emissions: An Early Overview of Galileo Observations | Galileo Radio and Plasma Wave Observations at Jupiter: An Invited Overview | Jupiter´s Low-Frequency Radio Spectrum: Filling in the Gaps | Recent Results by the University of Florida Group from Low Frequency Radio Observations of Jupiter and Neptune | A New Determination of Jupiter´s Radio Rotation Period | On the Origin of Jovian Decameter Radio Bursts | Recurrent Fine Structures in Jovian S-Burst Emission | The Contribution of the Riihimaa Classification to the Study of Jovian Millisecond Radio Bursts | Ground-Based High Sensitivity Radio Astronomy at Decameter Wavelengths | Jovian Decametric Eclipses by the Galilean Satellites | Polarization of Jupiter´s Decametric Radio Bursts | Propagation Effects Influencing the Observed Polarization of the Jovian Decametric Emission | Radio Emissions from Filamentary Sources: A Simple Approach | The Structure of the Io Plasma Torus after Ulysses Encounter | Atomic and Molecular Emissions from Jupiter´s Poles | Slow Magnetic Rotator in a Collisionless Plasma: Towards the Theory of Magnetospheres | A Search for Decametric Wavelength Radio Emission from the Collision of Comet S-L 9 with Jupiter | Understanding Jupiter´s Radiation Belts through Observation and Modeling | Jupiter´s Synchrotron Radiation: Observed Variations before, during and after the Impacts of Comet SL-9 | Modifications of the Synchrotron Radiation Belts of Jupiter two Years After the Collision with Coment SL9 | Terrestrial Non-Thermal Continuum Radiation: Wind Observations | Observations of Low Frequency Terrestrial Type III Bursts by Geotail and Wind and their Association with Isolated Geomagnetic Disturbances Detected by Ground and Space-Borne Instruments | Terrestrial LF Bursts: Source and Solar Wind Connection | Possible Stimulated AKR Observed in Galileo, DE-1 and Polar Wideband Data | The Observations of the Subauroral Nonthermal Radio Emission by AKR-X Receiver on Board of the Interball Satellite | Review of Recent Ground-Level Observations of Terrestrial Auroral Radio Emissions | Further Investigation of Auroral Roar Fine Structure | Terrestrial F-Region Cyclotron Maser Theory | Transionospheric Propagation Studies: Novel Data Sources | Radiophysical Aspects of the ´Warning´ Project | Re-visiting Saturnian Kilometric Radiation with Ulysses/URAP | Experimental and Theoretical Investigations on the Cassini RPWS Antennas | Electromagnetic Wave Direction Finding as Useful Tool for Analyzing Planetary Radio Emissions: Which Information can be Obtained? | New Digital Spectrometers for Ground Based Decameter Radio Astronomy | Automatic Recognition of Low Frequency Radio Planetary Signals | The Effects of Interplanetary Scattering on Radio Observations of Jupiter at very Low Frequencies | Heliospheric Radio Emission Theory | Electron Acceleration at Coronal and Interplanetary Shock Waves | Propagation of Particle Beams in Solar Coronal Magnetic Field Structures | Radio Emission Associated with Mass Ejection Events from Active Regions of the Sun - Event of 1992 August 5 | A Fly Off of the Fast Electron Flows Generating Type III Bursts | New Features in Type IV Solar Radio Emission: Combined Effects of Plasma Wave Resonances and MHD Waves | On the Origin of Decimetric -Wave Continuum of Solar Flares | Nonlinear Analysis of Solar Radio Events: A Preliminary Approach | Very Low Frequency Astrophysics from the Moon | Conference Summary | References

When we organized the first International Workshop on Planetary Radio Emissions in the summer of 1984, following the 25th COSPAR meeting held at Graz, we hardly expected this workshop to become somewhat of a tradition. The enthusiastic acceptance by the relatively small but highly active community led us to hold the second one in September 1987 and the third workshop in 1991. The intimate size of the workshop with enough time for discussions and social get-togethers formed a close bond among the members of this community over the years. There has been a continuing growth in subjects discussed at these workshops. Whereas the first one concentrated on the first radio planet, Jupiter, it also dealt with Earth and initial results of Saturn. By the second and third workshop Uranus and Neptune had joined the radio planets in our solar system as the results of the Voyager 2 fly-by of these planets. The most recent fourth workshop held in September 1996 expanded the themes concerned with all five radio planets by adding new results from the Galileo und Ulysses missions. The proceedings of these workshops appeared in bookform under the title Planetary Radio Emissions; the present one is the forth volume (PRE IV) appearing in the "Silver Series" of the Austrian Academy of Sciences Press. Like the previous three volumes the present one is also expected to become a "standard" in this discipline, containing the most-up- to-date state of knowledge in theory and observation of planetary radio emissions. We hope that this volume, as the previous ones, will become the compendium in this field until new observations and ideas might urge us to convene another Graz-Workshop.  

Proceedings of the 4th International Workshop Held at Graz, Austria, September 9-11, 1996

Planetary Radio Emissions IV

Proceedings of the International Workshop, Graz 1995

The Solar Wind-Magnetosphere System 2

The Solar Wind-Magnetosphere Systems

Theoretical Modelling of Comet Simulation Experiments

Foreword | Planetary magnetic fields: Salient characteristics | Doing more with Jupiter´s magnetic field | Jovian broadband kilometric radiation: New observations from Ulysses | Low-frequency auroral radio emission from Jupiter: The hectometric radiation | Origin of Jupiter´s decametric modulation lanes | Lane features in Jovian hectometric radio emissions | Jovian Decametric Io-related source and interplanetary scintillation | Spectrometric observations of Jupiter S-bursts at the Observatory Lustbühel, Graz 115 | Jovian S-emission: Decametric high sensitivity observations and model of radiation source | Subpulse structure of Jovian decametric S-bursts (Abstract) | The elliptical polarization of the Jovian decametric emission and the magnetosphere of Jupiter | Faraday rotation of Jupiter´s decametric radiation | Propagation effects influencing the observations of planetary radio emissions | The Ukrainian radio interferometer system URAN for studies in decametric wavelengths band (Abstract) | On the propagation of MeV electrons from Jupiter to the Earth | The AKR of the Earth: From studies inside the sources to distant observations and remote sensing | Regions of enhanced electron concentration in the auroral zone of the Earth magnetosphere (Abstract) | A programmable receiver for monitoring LF/MF/HF signals from remote sites | Source location of the Saturnian kilometric radiation | Nonthermal radio emissions from Uranus | Source location determination of UKR from ray tracing and emission lobe modelling | Neptune as a radio source | Methods for the localization of radio sources: Application to the smooth Neptunian kilometric radiation | Neptune´s smoothly varying radio emission between 600-800 kHz | Numerical simulations of bursty planetary radio emissions | Continuum radiation in planetary magnetospheres | Remote Sensing of auroral plasmas | Lightning at planets in the outer solar system | Lower hybrid soliton mediated radio emission | Conversion of upper hybrid waves into magnetospheric radiation | Nonlinear generation of radiation in planetary magnetospheres | Direction finding of electromagnetic waves: Application to planetary radio emission | Polarization and Riemann surfaces | An overview of Galileo Plasma wave observations at Venus and earth (Abstract) | Radio emissions associated with shock waves and a brief model of Type II solar radio bursts | Fine Structures of solar radio bursts and noise storms | Radio physics of the Sun at decametric wavelengths | Petschek-type reconnection at the magnetopause: A comparison of theory with data from ISEE 2 on September 11, 1979 | Prospects for the study of planetary radio emission | References

The International Workshop on Radio Emissions from Planetary Magnetospheres at Graz by now has become somewhat of a tradition. The present, third workshop was held at a time when, with the Voyager 2 flyby of Neptune the number of radio planets in our solar system has finally risen to five. This workshop, as the past ones, has provided the international community working in this discipline an opportunity to present and discuss the observational and theoretical aspects of nonthermal planetary radio emissions and their contribution as a diagnostic tool for planetary magnetospheres in general. The present volume contains edited versions of the papers presented at the workshop; its publication was again made possible through the generous support of the Austrian Academy of Sciences. The organizers and editors also wish to express their gratitude for financial support to the Austrian Space Agency (ASA), NASA, the City of Graz and the Provincial Government of Styria and especially want to thank the University of Graz for again hosting this workshop. We hope to contribute the now established tradition of the Graz workshop on planetary radio emissions at some appropriate time in the future.  

Proceedings of the 3rd International Workshop, held at Graz, Austria, September 2-4, 1991

Planetary Radio Emissions III

Theoretical Problems in Space- and Fusion Plasmas

Foreword | Planetary Radio Emission as a Tool of Magnetospheric Research | The Magnetic Environment of the Known Radio Planets | Comparative Study of the "Radio - Planets" | Observations of Nightside and Dayside Auroral Kilometric Radiation with Viking | Extended Ground-based Observations of Jupiter´s Decametric Radiation | 18 MHz Interferometry of Non-Io-C L-bursts | Interferometric Observations at 16.7 and 22.2 MHz at the Observatory Lustbühel, Graz | Evidence for Beaming of Jupiter´s Decametric Radiation: Simultaneous Observations from Voyagers and Ground-based Observatories | Source Localization of Jupiter´s Io Dependent Radio Emissions | Jovian Decametric Arc Pattern and Multiple Reflection Alfvén Wave Model | Io´s Interaction with the Plasma Torus: Currents in the Alfvén Wings and Joule Heating | The Kilometric Jovian Radio Sources at the Io Torus | Jupiter´s Radio Emission and Solar Activity | Does Solar Radio Emission Trigger SKR ? | Uranus Radio Emissions | The Auroral Kilometric Radiation from Uranus and its Magnetospheric Implications | Extraordinary Mode Waves on the Resonance Cone Detected on Uranus | Planetary Scaling Laws and Predictions for Neptune | Planetary Radio Emissions from Low Magnetic Latitudes: Observations and Theories | Low Frequency Radio Waves as a Diagnostic of Thermal Plasma Density in the Jovian Plasma Sheet | Polarization Aspects from Planetary Radio Emissions | Beaming of Planetary Radio Emissions | Modulated Spectral Activity (MSA) - Implications for Planetary Radio Sources | Ray Tracing Planetary Radio Emissions | Planetary Radio Emissions from High Magnetic Latitudes: The "Cyclotron Maser" Theory | Cyclotron Maser Instability and its Applications | Planetary Radio Lasing | Time Evolution of Low Frequency Plasma Modes | References | Erratum

The first internationalWorkshop on Planetary Radio Emissions was held in the summer of 1984 at Graz, following the Twentyfifth COSPAR meeting. The enthusiastic acceptance by the scientific community in this field encouraged us to organize this second workshop. In the intervening two years, Uranus was added to the list of radio planets, and results of the Voyager 2 observations could be included in this workshop's presentations and discussions. Observational results in general, as well as theoretical aspects of source mechanisms have also received further attention. Thus, the present workshop provided an excellent opportunity to assess the current status of research in planetary radio emissions. This volume contains edited versions of the papers presented at the workshop; its publi- cation was again made possible through the generous support of the Austrian Academy of Sciences. The organizers and editors wish to acknowledge with thanks the financial support by the Austrian Space Agency (ASA), the City of Graz, the Observatory of Paris, the Provincial Government of Styria, and to thank the University of Graz for hosting this workshop. In 1989 the flyby of Voyager 2 at Neptune will probably add another planet to the list of radio planets. Thus, following an appropriate time interval, a new assessment of all known radio planets may be in order and with it a third workshop to follow the already established tradition.  

Proceedings of the 2nd International Workshop held at Graz, Austria. September 7-9 1987

Planetary Radio Emissions II

Foreword | Planetary Radio Emissions - A Historical Perspective | Theory of Generation Mechanism of the Planetary Radio Emissions | Non Thermal Continuum Radiation at the Planetary Radio Emissions | RF-Wave Propagation in the Anisotropic Space Plasma | Source Location of Planetary Radio - Emissions | The broadband Jovian Kilometric Radiation. Statistical Properties and Source Model | The Influence of the Sun on Jupiter´s Radio Emission | The Similarities and Differences between AKR and Jovian Decametric Emissions | Voyager Planetary Radio Astronomy Experinent Observations: Plasma Waves in the Jovian and Saturnian Magnetospheres | External Control of Saturn Kilometric Radiation: Voyager 1 and 2 Studies | Saturn Electrostatic Discharges: Characterlstics, Comparison to Planetary Lightning and Inportance in the Study of Saturn´s Ionosphere

Following the XXV. COSPAR Meeting at Graz, the Space Research Institute of the Austrian Academy of Sciences, under the auspices of the Academy's Radio Science Com- mission, organized a small international Workshop on Planetary Radio Emissions at the University of Graz. The present volume contains edited versions of most of the papers (with discussions) pre- sented at the workshop; its publication was made possible through the generous support of the Austrian Academy of Sciences. Financial support for the workshop by the Provincial Government of Styria and the Aus- trian Solar and Space Agency (ASSA) is also gratefully acknowledged.  

Proceedings of an International Workshop held at Graz, Austria July 9-10, 1984

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Planetary Radio Emissions I

Siegfried J. Bauer

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