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ÖAW-Institut für Weltraumforschung
Austria
Приєднався 17 вер 2020
The Space Research Institute (Institut fuer Weltraumforschung, IWF) focuses on the physics of our solar system and the diversity of exoplanets. With about 100 staff members from 20 nations it is one of the largest institutes of the Austrian Academy of Sciences (Oesterreichische Akademie der Wissenschaften, OeAW). The institute is located in the Victor Franz Hess Research Center of OeAW in the south of Graz. At the Lustbuehel Observatory it operates a satellite laser ranging station, which is one of the best in the world.
Emilya Yordanova: Comprehending our local plasma universe from spacecraft measurements
Emiliya Yordanova (Institute for Space Physics, Uppsala, Sweden) will talk about the different components of the solar wind, and how we can measure and model its turbulent properties.
In the realm of our Local Plasma Universe, the Sun is the primary source of light and heat, supporting life and climate on Earth. The Sun continuously emits magnetized plasma, the solar wind, whose two main components are the fast wind streams originating from coronal holes and the slow wind streams - nearby helmet streamer belts. Occasionally eruptive events such as coronal mass ejections (CMEs) send into space massive amounts plasma and magnetic flux. All these components mix as they propagate and expand away from the Sun, forming a very structured and turbulent plasma flow that interacts with planetary environments. We have learnt a great deal about these interactions from the spacecraft missions sent to various targets in space to sample in-situ the electromagnetic field and plasma properties. However, still a great deal is unknown. I will present some advances in understanding the physics of CMEs, including modeling their large-scale properties, examining their interactions with the solar wind and exploring the generation of small-scale turbulence that leads to energy dissipation and heating. The understanding of plasma heating necessitates the estimation of gradients from multi-point observations, which are readily available in the terrestrial magnetosheath, but can be also utilized as one-point proxies in the solar wind. We find that dissipation and plasma heating occur at coherent structures, such as current sheets, in close correspondence with recent numerical simulations of plasma turbulence.
In the realm of our Local Plasma Universe, the Sun is the primary source of light and heat, supporting life and climate on Earth. The Sun continuously emits magnetized plasma, the solar wind, whose two main components are the fast wind streams originating from coronal holes and the slow wind streams - nearby helmet streamer belts. Occasionally eruptive events such as coronal mass ejections (CMEs) send into space massive amounts plasma and magnetic flux. All these components mix as they propagate and expand away from the Sun, forming a very structured and turbulent plasma flow that interacts with planetary environments. We have learnt a great deal about these interactions from the spacecraft missions sent to various targets in space to sample in-situ the electromagnetic field and plasma properties. However, still a great deal is unknown. I will present some advances in understanding the physics of CMEs, including modeling their large-scale properties, examining their interactions with the solar wind and exploring the generation of small-scale turbulence that leads to energy dissipation and heating. The understanding of plasma heating necessitates the estimation of gradients from multi-point observations, which are readily available in the terrestrial magnetosheath, but can be also utilized as one-point proxies in the solar wind. We find that dissipation and plasma heating occur at coherent structures, such as current sheets, in close correspondence with recent numerical simulations of plasma turbulence.
Переглядів: 27
Відео
Banzer Peter: Structure Matters- Structured Light and Matter for Research, Applications, and for Fun
Переглядів 1319 годин тому
Peter Banzer (Institute of Physics, Optics of Nano and Quantum Materials, University of Graz, Austria) uses nano-structured materials for light detector development Every single piece of matter in our world and in the universe is assembled from individual building-blocks, i.e., particles, atoms, molecules, etc. Not only shape and size, but also mechanical, electrical, optical, and other propert...
Tim Lichtenberg: Internal fractionation of atmospheric volatiles on magma ocean exoplanets
Переглядів 135День тому
Tim Lichtenberg (Kapteyn Astronomical Institute, Groningen, NL) will discuss the evolution of young rocky exoplanets and their observable atmospheric signatures. Low-mass exoplanets in a fully to partially molten state open a novel window into key processes that shape the earliest, high-temperature evolutionary regimes of rocky planets; a critical barrier to connect planetary accretion with lon...
Martin Ferus: Asteroid Impacts and Meteor Plasma in a Test Tube
Переглядів 197День тому
Prof. Martin Ferus from the J. Heyrovský Institute of Physical Chemistry in Prague, Czech Republic, will report on laboratory experiments to simulate complex chemical processes during asteroid impacts by high-energy lasers. Lasers provide an unparalleled tool for exploring phenomena that are nearly impossible to investigate under controlled laboratory conditions, enabling the replication of ext...
Sara Seager: In Pursuit of the Elusive: The Search for Exoplanet Biosignature Gases
Переглядів 325День тому
Prof. Sara Seager from the MIT Kavli Institute for Astrophysics and Space Research, USA, will tell us about the challenge to find signs of life beyond Earth using atmospheric biosignature gases. The search for signs of life beyond Earth is a key motivator in exoplanet research. A suitable “biosignature gas” is one that: can accumulate in an atmosphere against atmospheric radicals and other sink...
Silvia Spezzano: Physics and chemistry in interstellar clouds: Molecules as Astrophysical Tools
Переглядів 171День тому
Dr. Silvia Spezzano, Max Planck Institute for Extraterrestrial Physics in Garching, Germany, will talk about her research on the chemistry in the processes of star and planet formation. The gas composing the interstellar medium (ISM) is inherited from old stars and, at the same time, feeds into new stars and, eventually, new planets. Understanding the chemistry in the processes of star and plan...
X.C. Abrevaya: Combining Microbiology, Geology, and Astrophysics - Interdis. Studies in Astrobiology
Переглядів 64День тому
Ximena C. Abrevaya from the Institute for Astronomy and Space Physics (IAFE) at the Universidad de Buenos Aires will talk about interdisciplinary studies in astrobiology. As a relatively modern field of science, Astrobiology emerges to unveil the long-unsolved enigma about the existence of life outside of Earth. It defines itself as the study of the origin, evolution and distribution of life in...
Raphael Steinhöfler: Radiation Evaluation of a Mixed-Signal Application-Specific Integrated Circuit
Переглядів 25221 день тому
Raphael Steinhöfler from the IWF magnetometer group will be presenting his Master's thesis on radiation effects on high-precision magnetometers. Spacecraft electronics are subject to ionizing radiation and require extensive testing during the development phase in order to ensure proper operation in space. In the course of advancing the quality of scientific magnetic field measurements in space ...
Carmen Possnig, Cyprien Verseux: Stumbling around, from the ice to the stars
Переглядів 803 місяці тому
Carmen Possnig, österreichische Reserveastronautin der ESA, und Cyprien Verseux, französischer Astrobiologe, warem am 3. September 2024 im Rahmen der Astrobiologietagung EANA 2024 zu Gast am Grazer Institut für Weltraumforschung (IWF) der Österreichischen Akademie der Wissenschaften (ÖAW). In dem öffentlichen Vortrag "Stumbling around, from the ice to the stars" erzählten die beiden von den une...
Lorenz Roth: The volcanic moon Io and its role in Jupiter's magnetosphere
Переглядів 438 місяців тому
Lorenz Roth (KTH, Stockholm, Sweden) will report on the magnetospheric environment of Jupiter and its moon Io, Io's volcanic activity, and its feedback on the plasma. Since the Voyager mission flybys in 1979, we have known the moon Io to be extremely volcanically active as well as to be the main source of plasma in the vast magnetosphere of Jupiter. While the volcanic activity is generally dyna...
Will Rocha: Protostars contain the icy ingredients crucial for the genesis of habitable planets.
Переглядів 949 місяців тому
Dr. Will Rocha (Laboratory for Astrophysics, Leiden University, NL) will report on latest JWST detections of interstellar ices, their meaning for comets and planet formation, and on new laboratory water ice opacities relevant for JUICE. Interstellar ices host a large fraction of volatile species, including complex molecules, and ions being part of salts. This material follows the physical evolu...
Helmut Lammer: Origin of Mercury's exosphere: from Mariner 10 to BepiColombo
Переглядів 489 місяців тому
Dr. Helmut Lammer will give an overview about Mercury's exosphere The solar system’s innermost planet Mercury has very special physical and chemical characteristics, which go back to its origin. Besides the planet`s high average density, which was known since the Mariner 10 flybys in 1974-1975, the MESSENGER spacecraft 2008-2015 discovered that Mercury’s surface is volatile-rich and has a very ...
Inga Kamp: A new window into planet formation with JWST
Переглядів 599 місяців тому
Prof. Inga Kamp (Kapteyn Institute, Groningen, NL) will show us the latest JWST observations of planet-forming disks and discuss their constraints for planet formation. Our understanding of planet formation has changed recently, embracing the new idea of pebble accretion. This means that the influx of pebbles from the outer regions of planet-forming disks to their inner zones together with diff...
Maximilian Scherzer: Integrated Circuit Design for Fluxgate Magnetometers
Переглядів 2019 місяців тому
Maximilian Scherzer will present his PhD thesis on novel circuit designs for Fluxgate magnetometers. Fluxgate magnetometers are the most widely used sensors for space applications, particularly for planetary missions. This statement is supported by the large number of space missions over the past few decades that have investigated the diversity of planetary and inter-planetary magnetic properti...
Luca Sorriso-Valvo: Scaling Laws for the Energy Transfer in Space Plasma Turbulence
Переглядів 7411 місяців тому
Luca Sorriso-Valvo (CNR, Bari, Italy) will review the multi-scale dynamics of space plasmas driven by turbulence. One characteristic trait of space plasmas is the multi-scale dynamics resulting from non-linear transfers and conversions of various forms of energy. Routinely evidenced in a range from the large-scale solar structures down to the characteristic scales of ions and electrons, turbule...
Geoffroy Lesur: Are magnetic fields shaping protoplanetary discs?
Переглядів 255Рік тому
Geoffroy Lesur: Are magnetic fields shaping protoplanetary discs?
Joanna Drazkowska: The Puzzle of Planet Formation
Переглядів 99Рік тому
Joanna Drazkowska: The Puzzle of Planet Formation
Yamila Miguel: Exoplanet Characterization and Evolution through JWST and Solar System Synergy
Переглядів 58Рік тому
Yamila Miguel: Exoplanet Characterization and Evolution through JWST and Solar System Synergy
Andrea Banzatti: The structure of molecular inner disks and winds from infrared spectroscopy
Переглядів 58Рік тому
Andrea Banzatti: The structure of molecular inner disks and winds from infrared spectroscopy
Daria Kubyshkina: Atmospheric mass loss through time
Переглядів 55Рік тому
Daria Kubyshkina: Atmospheric mass loss through time
Matteo Guainazzi: Stars and planets under the NewAthena X ray microscope
Переглядів 124Рік тому
Matteo Guainazzi: Stars and planets under the NewAthena X ray microscope
Paul Rimmer: Heterogenous Chemistry in the Clouds of Venus
Переглядів 100Рік тому
Paul Rimmer: Heterogenous Chemistry in the Clouds of Venus
Tristan Guillot: Jupiter Below the Clouds: Active, Stable & Still Mysterious
Переглядів 62Рік тому
Tristan Guillot: Jupiter Below the Clouds: Active, Stable & Still Mysterious
Anders Johansen: Rapid accretion of rocky planets and the outgassing of their first atmospheres
Переглядів 56Рік тому
Anders Johansen: Rapid accretion of rocky planets and the outgassing of their first atmospheres
Martin Rubin: In situ mass spectrometry with ESA’s comet missions
Переглядів 672 роки тому
Martin Rubin: In situ mass spectrometry with ESA’s comet missions
Aline Vidotto: Stellar winds and their interactions with exoplanets
Переглядів 872 роки тому
Aline Vidotto: Stellar winds and their interactions with exoplanets
Ildar Shaikhislamov: Atmospheric winds of hot exoplanets in interaction with stellar winds
Переглядів 282 роки тому
Ildar Shaikhislamov: Atmospheric winds of hot exoplanets in interaction with stellar winds
Roland Lammegger: Optical magnetometry
Переглядів 4102 роки тому
Roland Lammegger: Optical magnetometry
IWF Graz. Leading Austria into Space. Since 1971.
Переглядів 3712 роки тому
IWF Graz. Leading Austria into Space. Since 1971.
PEOPLE of science❤, be kind to the ecology of planet Earth. When registering gravitational waves, the noise is 99.99%, and the useful signal is 0.01% - correct. Large corporations benefit from such devices. When registering gravitational quanta, the possibility of receiving a useful signal is 75%; the noise will be 25% - the device needs improvement, Einstein dreamed of such a device. Hello. My name is Zhavlan, I am from Almaty. New physics experiment has no problem observing scientific discoveries. The problem is with people of science, are they ready to lose authority; as popularizers of science, as academicians, nobel laureates... For the sake of the ecology of our planet, I ask you to help carry out work on new experiences. New technologies remove limitations in direct physical measurements of gravitons. More than $13 billion in environmental losses could be avoided. We are looking for help and hope for your courage to protect the nature of our planet. Construction of gravitational wave detectors is underway in China and India. There is also the launch of heavy rockets with interplanetary satellites, such as LISA and so on, not counting other resources. We need physicists who understand the difference between direct physical experience and indirect one. In the past, the Light Ether Theory had many indirect confirmations and even greater recognition from elite physicists, well, as is fashionable now; Einstein's theory of relativity. And as soon as Michelson conducted a direct experiment, the popularity of physics changed. Now a question for you: can you refer to direct experience in determining the constant speed of light? New hollow optical fiber technology allows even schoolchildren to do this. Using the Michelson-Morley Hybrid Gyro device... We will see this “Light is the ordered vibration of gravitational quanta, and the dominant gravitational fields adjust the speed of light in a vacuum.” If the device is in zero gravity and at rest relative to the dominant gravitational field, the difference in the path of light is zero.
any ways to get the slides
لباس
Dress? What do you mean?