The discovery of a new radio emission from Jupiter is among the highlights of a three-year Austrian Science Fund FWF project. This project actually investigated the planetary radio-frequency emissions of the Earth and Saturn - and a strange radio emission from the planet Jupiter was discovered.
Further results of the project, which has now been completed, included the identification of a new modulation in terrestrial radio emissions, as well as analysis of particular components of Saturn´s radio emissions. External reviewers assessed the project as outstanding in the closing evaluation.
The Earth is loud. Radio-loud. That is how objects causing measurable radio emissions are described in astronomy. The Earth itself is one as well, whose magnet field influences charged particles (electrons, protons, and ions) in a way that causes radio emissions. Indeed, other planets such as Saturn or Jupiter cause these emissions as well. Measuring them allows us to draw conclusions about planetary magnetic fields. A project of the Austrian Science Fund FWF, carried out in Graz at the Space Research Institute (IWF) of the Austrian Academy of Sciences, had just this goal.
The striking thing about the emission in the decametre region (wavelengths of about 10 metres) was especially its periodicity, that is, the change in its intensity. Up to now, there were two known periods for the decametre emission of Jupiter: one that resulted from the rotation of Jupiter running at 9 hours, 55 minutes, 29.7 seconds (System III), as well as a one further that can be traced back to the influence of Jupiter´s moon Io on the magnetic field (42.46 hours). The newly discovered component in the radio emissions, with a period of about 10.07 hours, lay approx. 1.5 percent higher than the one produced by Jupiter´s rotation. Dr. Panchenko comments: "Our further analyses suggest that the source of this new radio-frequency component co-rotates with Jupiter. We suspect that the source of the emission lies in the vicinity of the plasma torus fed by Jupiter´s moon Io." This is a donut-shaped region around Jupiter that lies at the elevation of Io´s orbital plane and has been formed by volcanic material from this moon interacting with Jupiter´s magnetic field. This hypothesis about the source and questions about how the radio impulses are created now need to be clarified in future projects.PROJECTS & PRODUCTS
Prof. Rucker´s view on the extension of the project: "Basic research lives from the unexpected. Thanks to the flexibility of the FWF, it was possible for us to meet scientific surprise with solid data analysis." A fact that the project´s international evaluators appreciated, when they provided assessments of ´outstanding´ in the final report.
Original publication: New periodicity in Jovian decametric radio emission, M. Panchenko, H. O. Rucker, M. L. Kaiser, O. C. St. Cyr, J.-L. Bougeret, K. Goetz and S. D. Bale. Geophysical Research Letters, VOL. 37, L05106, DOI: 10. 1029/2010GL042488, 2010Image and text available from Monday, 27 August 2012, at 09.00 CET at:
Margot Pechtigam | PR&D
When fluid flows almost as fast as light -- with quantum rotation
22.06.2018 | The Henryk Niewodniczanski Institute of Nuclear Physics Polish Academy of Sciences
Thermal Radiation from Tiny Particles
22.06.2018 | Universität Greifswald
In a recent publication in the renowned journal Optica, scientists of Leibniz-Institute of Photonic Technology (Leibniz IPHT) in Jena showed that they can accurately control the optical properties of liquid-core fiber lasers and therefore their spectral band width by temperature and pressure tuning.
Already last year, the researchers provided experimental proof of a new dynamic of hybrid solitons– temporally and spectrally stationary light waves resulting...
Scientists from the University of Freiburg and the University of Basel identified a master regulator for bone regeneration. Prasad Shastri, Professor of...
Moving into its fourth decade, AchemAsia is setting out for new horizons: The International Expo and Innovation Forum for Sustainable Chemical Production will take place from 21-23 May 2019 in Shanghai, China. With an updated event profile, the eleventh edition focusses on topics that are especially relevant for the Chinese process industry, putting a strong emphasis on sustainability and innovation.
Founded in 1989 as a spin-off of ACHEMA to cater to the needs of China’s then developing industry, AchemAsia has since grown into a platform where the latest...
The BMBF-funded OWICELLS project was successfully completed with a final presentation at the BMW plant in Munich. The presentation demonstrated a Li-Fi communication with a mobile robot, while the robot carried out usual production processes (welding, moving and testing parts) in a 5x5m² production cell. The robust, optical wireless transmission is based on spatial diversity; in other words, data is sent and received simultaneously by several LEDs and several photodiodes. The system can transmit data at more than 100 Mbit/s and five milliseconds latency.
Modern production technologies in the automobile industry must become more flexible in order to fulfil individual customer requirements.
An international team of scientists has discovered a new way to transfer image information through multimodal fibers with almost no distortion - even if the fiber is bent. The results of the study, to which scientist from the Leibniz-Institute of Photonic Technology Jena (Leibniz IPHT) contributed, were published on 6thJune in the highly-cited journal Physical Review Letters.
Endoscopes allow doctors to see into a patient’s body like through a keyhole. Typically, the images are transmitted via a bundle of several hundreds of optical...
13.06.2018 | Event News
08.06.2018 | Event News
05.06.2018 | Event News
22.06.2018 | Materials Sciences
22.06.2018 | Earth Sciences
22.06.2018 | Life Sciences