A5073795455- Astro and Planetary Science
- Planetary Science and Exploration
- Astrophysics and Star Formation Studies
- Stellar, planetary, and galactic studies
- Space Exploration and Technology
- Atmospheric Ozone and Climate
- Solar and Space Plasma Dynamics
- Geomagnetism and Paleomagnetism Studies
- Ionosphere and magnetosphere dynamics
- Laser-induced spectroscopy and plasma
- Fire Detection and Safety Systems
- Spacecraft Design and Technology
- Dust and Plasma Wave Phenomena
- Gamma-ray bursts and supernovae
- Isotope Analysis in Ecology
- Spacecraft and Cryogenic Technologies
- Internet of Things and Social Network Interactions
- GNSS positioning and interference
- Transportation Safety and Impact Analysis
- Geophysics and Gravity Measurements
- Mass Spectrometry Techniques and Applications
- Laser-Plasma Interactions and Diagnostics
- Space Satellite Systems and Control
University of Cambridge
2024-2025
Institute of Astronomy
2025
University of Stuttgart
2015-2024
Max Planck Institute for Extraterrestrial Physics
1994-1996
On 2016 Feb 19, nine Rosetta instruments serendipitously observed an outburst of gas and dust from the nucleus comet 67P/Churyumov-Gerasimenko. Among these were cameras spectrometers ranging UV over visible to microwave wavelengths, in situ gas, plasma instruments, one collector. At 09:40 a cloud developed at edge image shadowed region nucleus. Over next two hours recorded signature that significantly exceeded background. The enhancement ranged 50 per cent neutral density factors >100...
Abstract Recent JWST observations of the Fomalhaut debris disk have revealed a significant abundance dust interior to outer planetesimal belt, raising questions about its origin and maintenance. In this study, we apply an analytical model system, that simulates distribution as collisional fragments across range sizes are dragged inward under Poynting-Robertson (PR) drag. We generate spectral energy distributions synthetic JWST/MIRI images disks, perform extensive grid search for particle...
The DESTINY + (Demonstration and Experiment of Space Technology for INterplanetary voYage with Phaethon fLyby dUst Science) Dust Analyser (DDA) is a state-of-the-art dust telescope the in situ analysis cosmic particles. As primary scientific payload mission, it serves purpose characterizing environment within Earth–Moon system, investigating interplanetary interstellar populations at 1 AU from Sun studying cloud enveloping asteroid (3200) Phaethon. DDA features two-axis pointing platform...
The JAXA/ISAS spacecraft DESTINY$^+$ will be launched to the active asteroid (3200) Phaethon in 2022. Among proposed core payload is DESTINY+ Dust Analyzer (DDA) which an upgrade of Cosmic flown on Cassini Saturn (Srama et al. 2011). We use two up-to-date computer models, ESA Interplanetary Meteoroid Engineering Model (IMEM, Dikarev 2005), and interstellar dust module environment for EXploration model (IMEX; Sterken2013 al., Strub 2019) study detection conditions fluences interplanetary with...
Context. Here we describe a new model of the dust streams comet 67P/Churyumov-Gerasimenko that has been developed using Interplanetary Meteoroid Environment for Exploration (IMEX). This is universal recently created cometary meteoroid in inner solar system.
Context. The interplanetary dust complex is currently understood to be largely the result of production from Jupiter-family comets, with contributions also longer-period comets (Halley- and Oort-type) collisionally produced asteroidal dust. Aims. Here we develop a dynamical model cloud these source populations in order risk hazard assessment tool for meteoroids inner solar system. Methods. long-duration (1 Myr) integrations grains Halley-type main belt asteroids were used generate simulated...
Early-generation in situ dust detectors near-Earth space have reported the occurrence of clusters sub-micron particles that seemed unrelated to human spaceflight activities. In particular, data from impact ionization detector onboard HEOS-2 satellite indicate such swarms occur throughout Earth’s magnetosphere up altitudes 60 000 km—far beyond regions typically used by spacecraft. Further account high-altitude has since been given GEO-deployed GORID detector, however, explanations for latter...
Context. Findings by the Helios and STEREO mission have indicated presence of a resonant circumsolar ring dust associated with Venus. Attempts to model this phenomenon as an analogue Earth – result migrating trapped in external mean-motion resonances (MMRs) so far been unable reproduce observed feature. Other theories origin recently put forward. However, reason for low trapping efficiency Venus’s MMRs remains unclear. Aims. Here we look into nature phenomena that arise from multi-planet...
Abstract We discuss the synergies between heliospheric and dust science, open science questions, technological endeavours, programmatic aspects that are important to maintain or develop in decade come. In particular, we illustrate how can use interstellar solar system as a tracer for (dynamic) heliosphere properties, emphasize fairly unexplored, but potentially question of role cosmic astrospheric physics. show an probe mission with dedicated suite would bring unprecedented advances...
The Martian Moons Exploration (MMX) spacecraft is a JAXA mission to Mars and its moons Phobos Deimos. MMX will carry the Circum-Martian Dust Monitor (CMDM) which newly developed light-weight ($\mathrm{650\,g}$) large area ($\mathrm{1\,m^2}$) dust impact detector. Cometary meteoroid streams (also referred as trails) exist along orbits of comets, forming fine structures interplanetary cloud. consist predominantly largest cometary particles (with sizes approximately $\mathrm{100\,\mu m}$ 1~cm)...
The DESTINY+ spacecraft will be launched to the active asteroid (3200) Phaethon in 2025. equipped with Dust Analyzer (DDA) which a dust telescope hosting time-of-flight impact ionization mass spectrometer. In addition composition of impacting particles, instrument measure particle mass, velocity vector, and surface charge. Here, we study detection conditions DDA for interstellar during mission. We use module Interplanetary Meteoroid environment EXploration model (IMEX; Sterken et al., 2013;...
In this paper, we describe the upgrade of a small electrostatic dust accelerator located at University Stuttgart. The newly developed source, focusing lens, differential detector and linac stage were successfully installed tested in beam line. input voltage range source was extended from 0–20 kV to 0–30 kV. A with two charge sensitive amplifiers is employed monitor particles speeds several m/s km/s surface charges above 0.028 fC. post-stage provides an additional acceleration ability total...
Synopsis.Interstellar dust (ISD) continuously flows through our solar system as we orbit within the Milky Way galaxy, carrying information about upstream local interstellar material (ISM).As ISD grains encounter heliosphere, they experience gravitational, radiation pressure, and electromagnetic forces, perturbing their trajectories in a time-, charge-, size-dependent fashion, leading to complex variability flux throughout heliosphere.Despite having been detected heliosphere via insitu...
<p>Cosmic dust particles are important messengers. They contain information about their origin and journey through space. The DESTINY<sup>+</sup> mission that launches in 2024 provides the opportunity to investigate populations present at 1 AU around active asteroid (3200) Phaethon. For this purpose, Destiny<sup>+</sup> Dust Analyzer (DDA) is employed. instrument developed under lead of University Stuttgart Germany. Its...
The term `$\alpha$-meteoroid' was introduced to describe a group of micrometeoroids with certain dynamical properties, which -- alongside the $\beta$-meteoroids had been identified by first generation reliable in-situ dust detectors in interplanetary space. In recent years, use $\alpha$-meteoroid has become more frequent again, under subtly but crucially altered definition. This work shall bring attention discrepancy between term's original and newly established meaning, spotlight...