M. Hilchenbach
A5029889539- Astro and Planetary Science
- Solar and Space Plasma Dynamics
- Planetary Science and Exploration
- Ionosphere and magnetosphere dynamics
- Isotope Analysis in Ecology
- Nuclear Physics and Applications
- Stellar, planetary, and galactic studies
- Mass Spectrometry Techniques and Applications
- Atmospheric Ozone and Climate
- Laser-induced spectroscopy and plasma
- Space Exploration and Technology
- Astronomical and nuclear sciences
- Geomagnetism and Paleomagnetism Studies
- Geophysics and Gravity Measurements
- Ion-surface interactions and analysis
- Gamma-ray bursts and supernovae
- Spacecraft and Cryogenic Technologies
- Astrophysics and Cosmic Phenomena
- Astrophysics and Star Formation Studies
- Solar Radiation and Photovoltaics
- Particle Detector Development and Performance
- High-pressure geophysics and materials
- Earthquake Detection and Analysis
- Quantum, superfluid, helium dynamics
- Spacecraft Design and Technology
Max Planck Institute for Solar System Research
2015-2024
Max Planck Society
2009-2018
University of Arizona
2010
Centrum Badań Kosmicznych
2010
Polish Academy of Sciences
2010
University of Bern
2009
Max Planck Institute for Extraterrestrial Physics
1994-2008
Max Planck Institute for Astronomy
1997-2004
Cometary ices are rich in CO2, CO and organic volatile compounds, but the carbon content of cometary dust was only measured for Oort Cloud comet 1P/Halley, during its flyby 1986. The COmetary Secondary Ion Mass Analyzer (COSIMA)/Rosetta mass spectrometer analysed particles with sizes ranging from 50 to 1000 μm, collected over 2 yr, 67P/Churyumov-Gerasimenko (67P), a Jupiter family comet. Here, we report 67P composition focusing on elements C O. It has high (atomic |${\rm{C}}/{\rm{Si}} =...
The Grain Impact Analyzer and Dust Accumulator (GIADA) instrument on board ESA's Rosetta mission is constraining the origin of dust particles detected within coma comet 67 P/Churyumov–Gerasimenko (67P). collected belong to two families: (i) compact (ranging in size from 0.03 1 mm), witnessing presence materials that underwent processing solar nebula (ii) fluffy aggregates 0.2 2.5 mm) sub-micron grains may be a record primitive component, probably linked interstellar dust. dynamics constrain...
Before Rosetta, the space missions Giotto and Stardust shaped our view on cometary dust, supported by plentiful data from Earth based observations interplanetary dust particles collected in Earth’s atmosphere. The Rosetta mission at comet 67P/Churyumov-Gerasimenko was equipped with a multitude of instruments designed to study dust. While an abundant amount presented several individual papers, many focused dedicated measurement or topic. Different instruments, methods, sources provide...
ABSTRACT The COmetary Secondary Ion Mass Analyser instrument on board ESA's Rosetta mission has collected dust particles in the coma of comet 67P/Churyumov–Gerasimenko. During early-orbit phase mission, and particle agglomerates have been imaged analyzed inner at distances between 100 km 10 off cometary nucleus more than 3 AU from Sun. We identified 585 14 μ m size. are low impact speeds constitute a sample impacting fragmenting targets. sizes range up to sub-millimeter differential flux...
Abstract This chapter reviews the estimates of dust-to-gas and refractory-to-ice mass ratios derived from Rosetta measurements in lost materials nucleus 67P/Churyumov-Gerasimenko, respectively. First, by instruments are described, as well relevant characteristics 67P. The complex picture activity 67P, with its extreme North-South seasonal asymmetry, is presented. Individual then presented compared, showing wide ranges plausible values. ’s wealth information suggests that ratio made cometary...
Context. The COmetary Secondary Ion Mass Analyzer (COSIMA) on board Rosetta is dedicated to the collection and compositional analysis of dust particles in coma 67P/Churyumov-Gerasimenko (67P).
Abstract The exploration of interplanetary space and our solar bubble, the heliosphere, has made a big leap over past two decades, due to path-breaking observations Voyager spacecraft, launched more than 44 years ago. Their in-situ particle fields measurements were complemented by remote 5.2 55 keV Energetic Neutral Atoms (ENA) from Cassini mission (Ion Camera-INCA), revealing number previously unanticipated heliospheric structures such as “Belt”, region enhanced pressure inside heliosheath....
Knowledge of the magnetization planetary bodies constrains their origin and evolution, as well conditions in solar nebular at that time. On basis magnetic field measurements during descent subsequent multiple touchdown Rosetta lander Philae on comet 67P/Churyumov-Gerasimenko (67P), we show no global was detected within limitations analysis. The Magnetometer Plasma Monitor (ROMAP) suite sensors measured an upper magnitude less than 2 nanotesla cometary surface locations, with specific moment...
We report the first in situ detection of halogens a cometary coma, that 67P/Churyumov-Gerasimenko. Neutral gas mass spectra collected by European Space Agency's Rosetta spacecraft during four periods interest from comet encounter up to perihelion indicate main halogen-bearing compounds are HF, HCl and HBr. The bulk elemental abundances relative oxygen ∼8.9 × 10−5 for F/O, ∼1.2 10−4 Cl/O ∼2.5 10−6 Br/O, volatile fraction comet. isotopic ratios 37Cl/35Cl 81Br/79Br match Solar system values...
The COmetary Secondary Ion Mass Analyzer (COSIMA) on board the Rosetta mission has analysed numerous cometary dust particles collected at very low velocities (a few m s−1) in environment of comet 67P/Churyumov–Gerasimenko (hereafter 67P). In these particles, carbon and nitrogen are expected mainly to be part organic matter. We have measured nitrogen-to-carbon (N/C) atomic ratio 27 particles. It ranges from 0.018 0.06 with an averaged value 0.035 ± 0.011. This is compatible measurements...
On 3 July 2016, several instruments on board ESA's Rosetta spacecraft detected signs of an outburst event comet 67P, at a heliocentric distance 3.32 AU from the sun, outbound perihelion. We here report inferred properties ejected dust and surface change site outburst. The activity coincided with local sunrise continued over time interval 14 - 68 minutes. It left 10m-sized icy patch surface. material comprised refractory grains hundred microns in size, sub-micron-sized water ice grains. high...
Abstract The Mercury Imaging X-ray Spectrometer is a highly novel instrument that designed to map Mercury’s elemental composition from orbit at two angular resolutions. By observing the fluorescence X-rays generated when solar-coronal and charged particles interact with surface regolith, MIXS will be able measure atomic of upper ∼10-20 μm on day-side. Through precipitating night-side, also determine dynamic interaction planet’s surrounding space environment. composed complementary elements:...
A statistical study of diffuse energetic ion events and their related waves upstream the Earth's bow shock was performed using data from Active Magnetospheric Particle Tracer Explorers/Ion Release Module satellite over two 5‐month periods in 1984 1985. The set used to test assumption self‐consistent model wave particle populations by Lee (1982) that acceleration through hydromagnetic generation are directly coupled. comparison between observed power predicted on energy density solar wind...
Introduction: Mercury, the innermost planet in Solar System, remains an enigma due to significant gaps our understanding of its internal structure. Recent advancements planetary science have highlighted potential tidal Love numbers, specifically k2 and h2, provide critical insights into size Mercury's inner core [1]. The number represents a gravitational parameter, while h2 characterizes radial deformation planet's surface. determination can be achieved through techniques such as laser...