A5090651025- Astro and Planetary Science
- Planetary Science and Exploration
- Astrophysics and Star Formation Studies
- Space Exploration and Technology
- Isotope Analysis in Ecology
- Radiomics and Machine Learning in Medical Imaging
- Water Quality Monitoring and Analysis
- Stellar, planetary, and galactic studies
- Cancer Genomics and Diagnostics
- Solar and Space Plasma Dynamics
- Atmospheric Ozone and Climate
- Mass Spectrometry Techniques and Applications
- Traffic Prediction and Management Techniques
- Spacecraft Design and Technology
- Space exploration and regulation
- Space Satellite Systems and Control
- Scientific Research and Discoveries
- Groundwater and Isotope Geochemistry
- Earth Systems and Cosmic Evolution
- Particle Dynamics in Fluid Flows
- Geological and Geochemical Analysis
- Calibration and Measurement Techniques
- Atmospheric chemistry and aerosols
- Atmospheric aerosols and clouds
- Geology and Paleoclimatology Research
Heidelberg University
2009-2018
Georgia Institute of Technology
2016-2018
University of Stuttgart
2014-2018
Technische Universität Braunschweig
2012-2014
Max Planck Institute for Nuclear Physics
2011-2012
Woods Hole Oceanographic Institution
2009
Cassini detects interstellar dust grains The medium contains an array of small solid particles known as grains. Altobelli et al. used the analyzer on probe to detect 36 they passed by Saturn, and measured grains' elemental abundances. results show that, remarkably, these lack carbon-bearing compounds have been homogenized in into silicates with iron inclusions. Science , this issue p. 312
Investigating the dynamical and physical properties of cosmic dust can reveal a great deal information about both its many sources. Over recent years, several spacecraft (e.g., Cassini, Stardust, Galileo, Ulysses) have successfully characterised interstellar, interplanetary, circumplanetary using variety techniques, including in situ analyses sample return. Charge, mass, velocity measurements are performed either directly (induced charge signals) or indirectly (mass from impact ionisation...
Abstract The role of micrometeorite bombardment in space weathering on asteroid surfaces was studied using a 2 MV Van de Graaff accelerator. About 90,000‐ to 100,000‐micron‐ submicron‐sized copper particles with mass and velocity distribution similar the interplanetary dust population were fired onto polished Allende CV3 chondrite eucrite NWA 6966 samples at speeds between 1 70 kilometers per second. We find clear relationship microparticle bombardment, infrared reflectance decrease, overall...
Abstract To understand the process of cosmic dust particle impacts and translate crater morphology on smoothed metallic surfaces to properties, correct calibration experimental impact data is needed. This article presents results studies generated by using micron‐sized polypyrrole ( PP y)‐coated olivine particles. The particles were accelerated an electrostatic accelerator high speeds before they impacted onto polished aluminum targets. projectile diameter velocity ranges 0.3–1.2 μm 3–7 km s...
Abstract The processes of alteration airless bodies exposed to the space environment are referred be as “space weathering.” Multiple agents contribute generally weathering, an extent that depends on specific location surface within solar system. Typical weathering encountered in system radiation, wind and cosmic rays, magnetospheric plasma (e.g., at Jupiter or Saturn), dust. effect is assessed by measuring surfaces optical properties, for example, near‐infrared spectroscopy. due a cumulative...