Univ.-Prof.

Das elektromagnetische Spektrum der Sonne umfasst einen großen Wellenlängenbereich und einen Teil dieses Spektrums nimmt die solare Radiostrahlung ein. Das Buch befasst sich mit der Dekameter Radiostrahlung der Sonne, gemessen von den für diesen Zehnmeter-Bereich weltgrößten Radioteleskopen UTR-2 und URAN-2 in der Ukraine. Die mit bislang höchster Sensibilität erfassten neuesten Radioburst-Beobachtungen wurden in dynamischen Spektren erfasst, in Radioburst-Typen klassifiziert und hinsichtlich der Plasmadynamik in der solaren Korona analysiert. Somit beinhaltet dieses state-of-the-art Buch eine konzentrierte Zusammenfassung moderner Entdeckungen der solaren Radiostrahlung im Frequenzbereich von 8 bis 32 MHz und bietet ein ideales Fundament für aktuelle Radiomessungen von Raumsonden, wie z. B. Solar Orbiter. The electromagnetic spectrum of the Sun comprises quite a range of wavelengths, and part of it takes the solar radio emission. The book contains the decameter radiation of the Sun, in the 10-meter regime observed by the world-largest radio telescopes UTR-2 and URAN-2 in the Ukraine. By up to now unmatched sensibility the most recent radio burst measurements were recorded in so-called dynamic spectra, classified in types of radio bursts, and analysed with regard to plasma dynamics in the solar corona. Thus, this state-of-the-art book comprises a concentrated summary of modern discoveries of the solar radio emission in the frequency range of 8 to 32 MHz, and provides an ideal basis for current radio observations by spacecraft as, e.g., Solar Orbiter.

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Decameter Radio Emission of the Sun

Foreword | Sponsors | Saturn's Radio Emissions and their Relation to Magnetospheric Dynamics (invited) | Direction Finding and Polarization Measurements of SKR (invited) | An Overview of the Time-Dependent Rotational Modulation of Saturnian Radio Emissions (invited; abstract) | Variability of Southern and Northern SKR Periodicities | An SLS4 Longitude System Based on a Tracking Filter Analysis of the Rotational Modulation of Saturn Kilometric Radiation | Is a Rikitake Dynamo in Saturn's Interior at the Origin of the Variability of the Radio Rotation Periods? | Solar Wind and Saturnian Moons Signatures in the Long-Periodic Modulations of SKR (abstract) | A Close Encounter with a Saturn Kilometric Radiation Source Region | Saturn Kilometric Radiation Near a Source Center on Day 73, 2008 | Properties of Saturn Kilometric Radiation Measured Within its Source Region (abstract) | An Overview of Saturn Narrowband Radio Emissions Observed by Cassini RPWS (invited) | Saturnian Low-Frequency Drifting Radio Bursts: Statistical Properties and Polarization | Analysis of Latitudinal Dependence of Saturnian Radio Emissions (abstract) | Observations of Chorus at Saturn by Cassini (abstract) | The Location of the High-Density Boundary in Saturn's Inner Magnetosphere (extended abstract) | Density and Temperature of the Electron Core in the Inner Magnetosphere of Saturn from Cassini/RPWS Antennas (abstract) | Overview of Saturn Lightning Observations | Ground-Based Study of Saturn Lightning | Electric Field Transients Observed by the HUYGENS Probe in the Atmosphere of Titan: Atmospheric Electricity Phenomena or Artefacts? (abstract) | New Type of Periodic Bursts of Non-Io Jovian Decametric Radio Emission | Jupiter's Decametric and Hectometric Radio Emissions Observed by Cassini RPWS and Voyager PRA | Io-Jupiter Electrodynamic Interaction, Electron Acceleration and Radio Bursts Generation (abstract) | A Model of Jupiter's Decametric Radio Emissions as a Searchlight Beam | Jovian DAM “Arcs” and Auroral Context (abstract) | On the Origin of Io's Ultraviolet Aurora | Beaming Cone of Io-Controlled Jovian Decameter Radio Emission and Existence of Localized Active Longitude | Analysis of the S-components Features of the Jovian DAM Emission Obtained for the Different Io-Dependent Sources (extended abstract) | Consideration of the Jovian S-bursts and NB-emission Based on the Parametric Model | S/NB-events of Jovian Decametric Emission | Jovian Radio Emissions Modeling and their Future Investigation with EJSM (invited; abstract) | Exploration of Jupiter's Polar Magnetosphere and Radio Emissions with the Juno Mission (invited; abstract) | Variability of Jupiter's Synchrotron Emission in Mid-2009 | RX and Z Mode Growth Rates and Propagation at Cavity Boundaries (invited) | Waveguide Modes in the AKR Source | AKR Sources Positions - Interball 2 vs CLUSTER Observations | Can the Relativistic Maser Mechanism Cause the Strong Emissions Registered by Cluster and Demeter Satellites in the Polar Cusp? (abstract) | Medium-Frequency Burst Emissions: A Terrestrial Analog to Solar Type III Bursts? | AKR Diurnal, Semi-Diurnal and Shorter Term Modulations Disentangled by Cassini/RPWS Observations (abstract) | Ground-Level Detection of Auroral Kilometric Radiation (abstract) | The Search for Exoplanetary Radio Emissions (invited) | Exoplanet Magnetic Field Estimation via Energetic Neutral Atoms (ENAs) and Hydrogen Cloud Observations and Modelling | Radio Emission from Magnetic Exoplanets: Progress Report on GMRT Observations and Results (abstract) | On the Possibility of Radio Emission of Planets Around Pulsars | Coronal Mass Ejections and Solar Radio Emissions (invited) | Decameter Radio Emission of the Sun: Recent Observations | Properties of Decameter Spikes | Unusual Type III Bursts at the Decametre Wavelengths | Properties of Powerful Solar Type III Bursts in the Frequency Range of 10-30 MHz | Propagation of Energetic Electrons from the Corona into Interplanetary Space and Type III Radio Emission | Local Time Occurrence of Solar Type III Bursts at Saturn's Orbit | An Influence of Antenna Tilt Angle to the RPW/Solar Orbiter Direction Finding (extended abstract) | Numerical Simulation of the Propagation of Type III Radio Emission | Localized Langmuir Eigenmodes and Solar Radio Bursts | Complex Zebra Patterns in Solar Radio Emission and New Generation Mechanisms | Solar Radio Emissions in View of the Solar Orbiter Mission (invited; abstract) | Millimeter Radio Astronomy and the Solar Convection Zone | Unusual Spectra of Polarized Radio Emission of Active Regions on the Sun | Long-Periodic Transverse Oscillations of Coronal Loops and Modulations of Solar Microwave Radiation | Plasma Heating by the Parametric Excitation of Acoustic Waves in Coronal Magnetic Loops | Coronal Magnetic Field Structure in Solar Active Regions | Magnetohydrodynamic Shocks and Solitons in the Solar Atmosphere: Recent Challenges in Observations and Theory | STEREO Observations of Large-Scale Waves in the Solar Corona (abstract) | Study of the Kinematics, Driver of the Global Moreton Wave Observed on 28-10-2003 (abstract) | Implications of Antenna System Calibration on Spacecraft Design and Radio Data Analysis | Numerical Simulations of the Solar Orbiter Antenna System RPW ANT | Antenna Design and Distribution for a LOFAR Super Station in Nançay | Planetary and Exoplanetary Studies with the Giant Radio Telescope LOFAR (abstract) | Solar Observations with LOFAR | Combined Radio Observations with LOFAR and the Giant Ukrainian Radio Telescope | New Antennas and Methods for the Low Frequency Stellar and Planetary Radio Astronomy | Tests of an Active, Broad-band Antenna Array | Observing Solar Radio Bursts from the Lunar Surface | Broadband Observations of Radio Emission of Flare Stars | On Kinetic Approach to Modeling of Sources of Electromagnetic Radiation Located in Planet/Stellar Electroctromagnetic Structures (abstract) | On Dust Kinetic Alfv´en Waves and Streaming Instability in a Lorentzian Magnetoplasma | Improved Radio Studies of Space by Using New EM Degrees of Freedom (abstract) | 101 Things That You Might Have Wondered About Space Plasma Wave Research But Were Afraid To Ask! | List of Participants

The 7th International Workshop on "Planetary, Solar and Heliospheric Radio Emissions" is the continuation of an established tradition: This PRE VII conference followed previous successful international workshops held at Graz, Austria, in 1984, 1987, 1991, 1996, 2001, and 2005. This 7th workshop in September 2010 offered again the unique opportunity to discuss the observations from Cassini at Saturn and to investigate the measurements by other spacecraft and from the ground of the Jovian, terrestrial and solar radio emissions, also including studies on radiation from exoplanetary sources. 

Proceedings of the 7th International Workshop on Planetary, Solar and Heliospheric Radio Emissions held at Graz, Austria September 15-17, 2010

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Planetary Radio Emissions VII

Foreword | Planetary Radio Astronomy, Fifty Years Ago and Fifty Years Hence | Father Zeus | The Birthplace of Planetary Radio Astronomy: the Seneca, Maryland observatory 50 years after Burke and Franklin´s Jupiter Radio Emission Discovery | First Observations of Jupiter´s Radio Emissions in Florida | Cassini Radio and Plasma Wave Observations at Saturn | SKR Polarization and Source Localization with the Cassini/RPWS/HFR Instrument: First Results | External Control of Saturn Kilometric Radiation | Saturn Rotation Modulated ENA and SKR Emissions: Implications for Magnetic Field Asymmetry | Model of a Variable Radio Period for Saturn | Cassini Magnetic Field Observations of Saturn´s Internal Planetary Magnetic Field | Observations of Langmuir Waves Detected by the Cassini Spacecraft | An Electron Density Model for Saturn´s Inner Magnetosphere | Quasi Thermal Noise in Bernstein Waves at Saturn | Funnel-shaped Emissions by Cassini Close to the Saturn´s B Ring | Cassini RPWS and Imaging Observations of Saturn Lightning | Physical Properties and Detection of Saturn´s Lightning Radio Bursts | On the Intensity of Saturn Lightning | Is Titan a Radio Source? | Propagation of the Alfvén Waves Generated by the Interaction of Titan with Magnetospheric Plasma | The "Radio Horizon" Effect as a Possible Explanation of the Planetary Auroral Radio Emission Phenomenology | Origin of Active Longitude in Jovian Decametric Radio Emission | Jovian Active Longitude: a Parametric Study | Study of the Modelled Occurrence Variability of the Jovian Decametric Emissions | Jupiter S-burst Polarization Measurements Using the Waveform Receiver | Investigation of the Jovian S-Emission Dynamic Spectrum Features | S-Bursts and the Jupiter Ionospheric Alfvén Resonator | Jovian Bursty High-Latitude Emissions Revisited: The Ulysses-Jupiter Distant Encounter | Ulysses Observations of Jovian Radio Emissions over a Wide Range of Jovicentric Latitude | Recent Progress in the Measurement of Jupiter´s Decametric Radio Source Parameters by the Modulation Lane Method | The Internet Jupiter Radio Observatory and Modulation Lanes Observed by the New UFRO Jove Spectograph | The Radio JOVE Project: Amateurs Working with Professionals | Auroral Kilometric Radiation Source Region Variations with Season and Solar Cycle | Thin Plasma Cavities as a Source of the Auroral Kilometric Radiation | Partially Filled AKR Emission Cones | Variation of AKR Source Altitude as a  Result of Ionosphere-Magnetosphere Interaction | Ordered Fine Structure in the Radio Emission Observed by Cassini, Cluster and Polar | Transionospheric Propagation Parameters Calculated from Empirical Electron Density Models Adapted to Realistic Conditions | Adapting Empirical Electron Density Models to Disturbed Conditions | Observation of Continuum Radiation Close to the Plasmapause: Evidence for Small Scale Sources | Man-made Radio Emissions Recorded by Cassini/RPWS During Earth Flyby | The Electrostatic Potential at the Earth´s Quasi-Parallel Bow Shock | Mathematical Model of Magnetic Field Perturbations by Currents in the Earth´s Magnetosphere | Influence of the Ion Flow Direction on the Modified Two Stream Instability | Radio Emission of Solar Flare Particle Acceleration | On Possible Escape of Electron Cyclotron Maser Radiation From Active Regions in the Solar Corona | Generation of Highly Energetic Electrons at the Reconnection Outflow Shock During Solar Flares | Transport of Energetic Electrons Through the Solar Corona and the Interplanetary Space | On the Relation Between Large-Scale Coronal Waves and Metric Type Il Solar Radio Bursts | Sporadic Solar Radio Emission at Decameter Wavelengths | Observations of Solar S-bursts at the decameter wavelengths | Properties of Very Short-Duration Solar Radio Bursts | New Families of Super Short Radio Bursts | Spectral Study of Solar Type III Decametric Bursts | Excitation of electrostatic waves in a flaring plasma | Predictions for Dynamic Spectra and Source Regions of Type Il Radio Bursts in the Inhomogenous Corona and Solar Wind | Dynamic Processes in Groups of Solar Coronal Magnetic Loops Observed in Microwaves | On the 3D Kinetic Modeling of a Magnetotail/Solar Streamer by a Plasma Flow Over Magnetic Dipole and Toroid | Mechanism of Relativistic Jet Formation and Generation of Synchroton Radiation | The STEREO Mission and the S/WAVES Instrument | Numerical Analysis of the STEREO WAVES Antennas: First Results | Wire-Grid Simulations of the Mars Express/MARSIS Antenna System | Microsat and Lunar-Based Imaging of Radio Bursts | Low Frequency Observation on the Moon | Utilizing Existing Decameter Radio Telescopes as Pathfinders Towards LOFAR - LWA - LOIS Science and Technology | Jupiter Burst Observation with LOFAR/ITS | Planetary and Solar Radio Emission Studies with the Long Wavelength Array | SURA-WAVES Experiments: Calibration of the Cassini/RPWS/HFR Instrumentation | Hot Jupiters and Magnetized Stars: Giant Analogs of the Satellite-Jupiter System? | The Influence of Stellar Coronal Mass Ejections on Exoplanetary Radio Emission | Search of Non-Thermal Radio Emission from Planets and Stars at Decameter Wavelength | Search for Radio Emission from Extrasolar Planets: Preliminary Analysis of GMRT Data | Search for Radio Emission from Extrasolar Planets: the Observation Campaign | Radio Detection of Extrasolar Planets: Present and Future Prospects | Email-list of participants

Der 6. Internationale Workshop über „Planetare und Solare Radiostrahlung“ ist nun bereits eine etablierte Tradition: Diese PRE VI Konferenz war die Fortsetzung einer Serie erfolgreicher internationaler Workshops, welche in Graz, Österreich, in den Jahren 1984, 1987, 1991, 1996 und 2001 abgehalten wurden. Dieser 6. Workshop im April 2005 bot die einmalige Gelegenheit, die Beobachtungen der Raumsonde Cassini, welche sich Saturn näherte, zu diskutieren, sowie die Messungen nach dem Einschwenken in den Saturn Orbit am 1. Juli 2004, zu analysieren. Eine Reihe von Beiträgen befasst sich mit diesen neuen Erkenntnissen, insbesondere mit der Saturn Radiostrahlung SKR und den Saturn Electrostatic Discharges (SEDs), Blitzphänomenen in der Saturn-Atmosphäre. Jedoch werden auch andere planetare Radiokomponenten von der Erde und von Jupiter behandelt, letztere auch unter dem Aspekt eines großen Ereignisses und Jahrestages: Im April 2005 sind es genau 50 Jahre seit der unerwarteten und überraschenden Entdeckung von Jupiter als Radiostrahler, entdeckt von Bernie Burke und Ken Franklin. Beide haben entsprechende Beiträge und persönliche Erinnerungen für diesen Proceedingsband bereitgestellt, Bernie war selbst am Workshop anwesend. Solare Radiobursts, in vieler Hinsicht unterschiedlich zur planetaren Radiostrahlung, wird eingehend beschrieben, gerade auch im Hinblick auf die bevorstehende NASA Stereo Raummission, welche zum ersten Mal einen stereoskopischen Blick auf die Sonne und ihre Umgebung werfen kann. Der Proceedingsband „PRE VI“ wird mit einer CD-ROM mitgeliefert, welche alle vorangegangenen Workshops PRE I bis VI umfasst und somit eine beinahe vollständige Abdeckung dieses Forschungsgebietes über mehr als zwei Jahrzehnte bereitstellt. The 6th International Workshop on Planetary and Solar Radio Emissions" is now an established tradition: This PRE VI conference was a continuation of successful international workshops held at Graz, Austria, in 1984, 1987, 1991, 1996, and 2001. This 6th workshop in April 2005 offered the unique opportunity to discuss the observations from Cassini approaching Saturn and to investigate the measurements retrieved during the first orbits of Cassini around Saturn after Saturn Orbit Insertion on July 1, 2004. A number of contributions deal with these novel findings putting Saturn and its radio wave phenomena, in particular the Saturn Kilometric Radiation SKR and the Saturn Electrostatic Discharges SEDs (lightning phenomena in Saturn’s atmosphere), into the focal point of interest. However, other planetary radio components from Earth and Jupiter have also been addressed, the latter under the aspect on the occasion of a great anniversary: April 2005 was almost exactly 50 years after the serendipitous discovery of Jupiter as a radio emitter, by Bernie Burke and Ken Franklin, both with contributions of personal reminiscences in this proceedings, and Bernie personally attending the workshop. Solar electromagnetic radiation, in many aspects different with regard to planetary radio emission, was highlighted by the upcoming NASA Stereo mission which will, for the first time provide a stereoscopic view of the sun and its environment. The volume "PRE VI comes along with a CD-ROM covering all previous workshops PRE I through VI and provides an almost complete coverage of this research topic over more than two decades. 

Proceedings of the 6th International Workshop held at Graz, Austria April 20‒22, 2005

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Planetary Radio Emissions VI

Foreword | Radio Observations during the Cassini Flyby of Jupiter | High-Resolution Observations of Low-Frequency Jovian Radio Emissions by Cassini | Sub-second Time Scales in Jovian Radio Emissions as Measured by Cassini/RPWS; Comparison with Ground-based Observations | Ulysses and Cassini at Jupiter: Comparison of the Quasi-periodic Radio Bursts | Io´s Flux Tube Footprint (Abstract) | New Frontiers in Decameter Radio Astronomy | New Instrumentations and Methods for the Low Frequency Planetary Radio Astronomy | New Clues from the Microstructure of Jupiter´s S-Bursts | Waveform Analysis Techniques of Jovian S-Burst Observations | On a Phase-bunching Model for Jovian S-Bursts | Location of the Acceleration Region of the Bunched Electrons Inferred from the Interaction Event of S-Bursts with L-Bursts and N-Bursts | Some Results of the Jovian DAM Emission Investigation with Wavelet Analysis Technique | Modulation Lane Measurement of Jupiter´s Io-B Source Parameters | Polarization and Beaming of the Jovian bKOM and HOM Observed at 5 AU from Jupiter by Ulysses/URAP | Interaction of Io´s Ionosphere with the Jovian Magnetic Field: Is this a Reason of Depression in the Background Magnetic Field Recorded by Galileo? | Spectral Features of Jovian Hectometric Emission Observed by Galileo and Wind Spacecraft | Control of Jovian Radio Emissions by the Galilean Moons as Observed by Cassini and Galileo | Jovian Decametric Occultations by Callisto in 2001-2010 | Ground and Space Observations of Jovian Decametric Emissions in the Frequency Band from 1 MHz to 40 MHz | Spectrographic Investigations of the Structure of Jupiter´s Decametric Radio Emission Sources | Temporal Evolution Steps of Jovian Narrow-band Emissions | Efficiency of the Cyclotron Maser Instability and Occurence Probability of Jovian Decameter Radio Emissions | To the Theory of Electron Cyclotron Maser Radio Emission of Electron Beams | Development  of an Array Antenna System and a Mulit-frequency Interferometer Network for the Jovian Decametric Radiation | Jupiter´s Synchrotron Emission: Unveiling the Jovian Inner Radiation Belts Through Modeling and Observation (Abstract) | Cassini-Jupiter Microwave Observing Campaign: DSN and GAVRT Observations of Jovian Synchrotron Radio Emission | Cassini RADAR/Radiometer and VLA Observations of Jupiter´s Synchrotron Emission | The Evolution of Jupiter´s Synchrotron Radiation along the Solar Cycle | Synchrotron Emission at 6 and 20 cm: VLA Images and 3-D Modeling of the Jovian Radiation Belts (Abstract) | Saturn Radio Waves | Detection Capability of Cassini for Thundercloud Generated Lightning Discharges on Titan | Terrestrial Radio Emission: AKR | Terrestrial Kilometric Radiation and Manetospheric Activity: Bursts and Substorms, Periodic Emissions and Field-Line Resonances | Spectral Features in Auroral Kilometric Radiation | Recent Observations of Auroral Roar Emissions: Flickering and Direction Finding (Abstract) | Using Geotail, Wind and Polar Observations of Solar, Interplanetary, and Terrestrial Plasma Wave and Radio Emissions to Identify Source Characteristics | Instantaneous AKR Emission Cone | Geomagnetic Latitudes and Longitudes of Source Locations of Planetary Radio Emissions: Theoretical Approach and Spacecraft Observations | Interball-1 Observations of the Plasmaspheric Emissions Related to Terrestrical "Continuum" Radio Emissions | Observations of the Subauroral Non-thermal Radio Emission (SANE) in 1995-1998 | Wire-grid Modeling of Cassini Spacecraft for the Determination of Effective Antenna Length Vectors of the RPWS Anennas | First Results on the Calibration of the Cassini RPWS Antenna System | On the Structure of Electromagnetic Field Generated by a Moving External Current Source in a Magnetized Plasma | Field-aligned Electric Field in the Io Flux Tube as a Result of a Pressure Pulse near Io | Electromagnetic Environment Produced by a Moving Conducting Body in a Magnetized Collisionless Plasma | Effects of MHD Slow Shocks Propagating along the Io Flux Tube | On the Plasma Turbulence in the Jovian Magnetosheath | Solar Wind Diagnostic Using Observations of Interplanetary Scintillations of Cosmic Radio Sources at Extremly Low Frequencies | Image Denoising Algorithm Based on Template Wavelet Coefficients | Interplanetary Medium and Ionospheric Investigations with New Wide Band Active Antenna Array | Antenna Diagnostics of the Dust in Space Plasma | Solar Radio Emissions | Relative Timing of Impulse Solar Electron Injections and Solar Electromagnetic Emissions | EIT Waves, Coronal Shock Waves, and Solar Energetic Particle Events | Joint Observations of Fine Structures in some Recent Solar Radio Bursts | Interpretation of Fine Structure in Solar Non-thermal Radio Emission (Zebra-Pattern and Broadband Pulsations) and Diagnostics of Post-flare Coronal Plasma | Radio Pulsations in the m-dm Band: Case Studies | Plasma Emission of Beam-Plasma Structure in the Solar Corona | Some Eruptive Events of Summer 2000 Observed at Wroclaw Observatory | 3D Coronal Structures Formation in a Kinetic Approach: Transients and Rays | References | Email-list of participants

From the Foreword:

The present 5th International Workshop on "Planetary and Solar Radio Emissions" was held shortly after the flyby of Cassini past Jupiter in December 2000, when the Jovian magnetosphere and its interaction with the solar wind were monitored for the first time by two spacecraft, Galileo in orbit around Jupiter and Cassini at a flyby distance of about 136 Jovian radii, crossing the Jovian bow shock several times. The ever increasing number of contributions, however, did not extend to all known radio planets but rather focused on Earth and Jupiter, and on the Sun as an additional radio source in our solar system. This may certainly have changed by the time Cassini reaches the Saturnian realms.

Like the previous four volumes which have appeared in the "Silver Series" of the Austrian Academy of Sciences Press, the present proceedings without doubt define the latest state of knowledge in this discipline. 

Proceedings of the 5th International Workshop held at Graz, Austria, April 2–4, 2001

Planetary Radio Emissions V

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

Magnetopause Reconnection and Aurora Dynamics

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

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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Helmut O. Rucker

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