A5103243269- Solar and Space Plasma Dynamics
- Astro and Planetary Science
- Ionosphere and magnetosphere dynamics
- Geomagnetism and Paleomagnetism Studies
- Planetary Science and Exploration
- Astrophysics and Cosmic Phenomena
- Geophysics and Gravity Measurements
- Gamma-ray bursts and supernovae
- Dark Matter and Cosmic Phenomena
- Spacecraft and Cryogenic Technologies
- Isotope Analysis in Ecology
- High-pressure geophysics and materials
- Nuclear Physics and Applications
- Atmospheric Ozone and Climate
- Taxation and Legal Issues
- Economic and Fiscal Studies
- Solar Radiation and Photovoltaics
- Laser-induced spectroscopy and plasma
- Stellar, planetary, and galactic studies
- Global Energy and Sustainability Research
- Magnetic confinement fusion research
- Space Exploration and Technology
- Atomic and Subatomic Physics Research
- Neutrino Physics Research
- Corporate Taxation and Avoidance
Institute for Particle and Nuclear Physics
2004-2022
HUN-REN Wigner Research Centre for Physics
2012-2022
Hungarian Academy of Sciences
1995-2019
Research Centre for Astronomy and Earth Sciences
2019
Hungarian Research Network
2006
Research Network (United States)
2006
California Institute of Technology
2005
Imperial College London
1993-2005
Jet Propulsion Laboratory
2005
University of Leicester
2005
The magnetometer instrument on the Solar Orbiter mission is designed to measure magnetic field local spacecraft continuously for entire duration. need characterise not only background but also its variations scales from far above well below proton gyroscale result in challenging requirements stability, precision, and noise, as operational limitations both other instruments. vibration thermal environment has led significant development of mechanical sensor design. overall design, performance,...
Cassini's successful orbit insertion has provided the first examination of Saturn's magnetosphere in 23 years, revealing a dynamic plasma and magnetic environment on short long time scales. There been no noticeable change internal field, either its strength or near-alignment with rotation axis. However, external field is different compared past spacecraft observations. The current sheet within thinner more extended, we observed small diamagnetic cavities ion cyclotron waves types that were...
Abstract The dual spacecraft mission BepiColombo is the first joint between European Space Agency (ESA) and Japanese Aerospace Exploration (JAXA) to explore planet Mercury. was launched from Kourou (French Guiana) on October 20th, 2018, in its packed configuration including two spacecraft, a transfer module, sunshield. cruise trajectory long journey into inner heliosphere, it includes one flyby of Earth (in April 2020), Venus 2020 August 2021), six Mercury (starting before orbit insertion...
In May, 1993, the heliospheric current sheet (HCS) ceased to be seen by Ulysses spacecraft at a heliocentric latitude of ∼30° S and distance 4.7 AU. The disappearance HCS coincided with solar wind speed remaining >560 km/s one four interaction regions previously on each rotation. heliographic was 11° equatorward magnetic neutral computed source surface 2.5 radii, it occurred half year earlier than predicted basis persistence time profile tilt from cycle next.
The Cassini spacecraft flew by Titan on October 26, 2004 and December 13, 2004. In both cases it entered the ionosphere of Titan, allowing exploration its plasma environment. Using observations from Plasma Spectrometer (CAPS) magnetometer along inbound legs flybys, we examine Titan's global On occasions CAPS detected populations distinct those Kronian magnetosphere at about 1–1.5 Saturn radii moon. Closer to observed drifting ion ring distributions originating and, in addition, a corotating...
Abstract. Hot flow anomalies (HFAs) are studied using observations of the magnetometer and plasma instrument aboard four Cluster spacecraft. We study several specific features tangential discontinuities on basis measurements from time periods February–April 2003, December 2005–April 2006 January–April 2007, when separation distance spacecraft was large. The previously discovered condition (Facskó et al., 2008) for forming HFAs is confirmed, i.e. that solar wind speed fast magnetosonic Mach...
The fundamental aim of the Ulysses space mission is to extend our understanding heliosphere into three dimensions. By April 1994, spacecraft had reached a heliographic latitude 60°S. Hourly averages heliospheric magnetic field observations have been analyzed determine what extent underlying direction within 60° equator can be described by Parker spiral model. At all latitudes from near ecliptic southward 60°S, most probable value azimuthal orientation lines remained in approximate agreement...
The possible latitudinal offset of the location heliospheric current sheet (HCS) is an important question, since it has impact on understanding various phenomena including solar dynamo and modulation cosmic rays. In declining phase previous, 22nd cycle, in 1993, a southward displacement HCS by 10° was proposed to explain north‐south asymmetry energetic charged‐particle fluxes measured Ulysses. Other observations supported as well, now widely accepted scientific community that displaced...
The rapid crossing of the solar equatorial region by Ulysses as it returned from south pole resulted in 7 crossings heliospheric current sheet between 10°S and 20°N 10 distinct wind interaction regions 18°S 22°N. Both extent latitude interval containing are a factor ≈ 2 less than were observed when left 1993. A map heliographic Carrington longitude reveals two folds corresponding to 4 magnetic sectors. coronal holes associated with sectors, high‐speed streams have been identified. Two...
The unique vantage point of the Ulysses spacecraft throughout 1992 and beginning 1993, at a close to constant heliocentric distance about 5 AU slowly varying heliographic latitude from 5° 30° south is used describe discuss evolution sector structure interplanetary magnetic field during declining phase solar cycle. From end 1990 changed four two structure, but remained in longitude. June‐July 1992, matching computed coronal fields, drifted eastwards, with recurrence period 28 days. This...
The ion measurements of the Cassini Plasma Spectrometer are presented which were acquired on 26 December 2005, during T9 flyby at Titan. plasma flow and magnetic field directions in distant environment moon distinctly different from other flybys. near‐Titan environment, dominated by ions Titan origin, had a split signature, each with composition; first region was dense, slow, cold 16–19 28–40 amu mass range, second contained only 1 2, much less dense slow. Magnetospheric penetrate marginally...
[1] Plasma data from the Cassini Spectrometer experiment were used to investigate properties of variable plasma environment Titan's orbit. The characteristics this play a crucial role in plasma-moon interaction and also have strong influence on ionosphere Titan. Using dynamic energy spectra ions within ±3 h Titan flybys we identified different ambient environments, similar ones proposed earlier based electron measurements. Expanding time interval 12 cover full SKR periods, taking into...
[1] We analyze ion densities derived from the data of Cassini Plasma Spectrometer for time period prime mission till end May 2008, in low latitude outer magnetosphere near Titan encounters. have found that central line magnetodisk is surrounded by a structured plasma sheet, smooth, broad layer composed light ions, and heavy displaying narrow substructures. The are spiky; co-location observed enhanced with change sign radial component magnetic field demonstrated. At these locations density...
view Abstract Citations (12) References (29) Co-Reads Similar Papers Volume Content Graphics Metrics Export Citation NASA/ADS Drift Acceleration at Interplanetary Shocks Erdos, G. ; Balogh, A. Scatter-free acceleration of energetic particles by quasi-perpendicular interplanetary shocks is investigated. A brief review given on the predictions gradient drift model concerning energy, time, and angular dependence particle flux caused a single shock encounter interaction. The distribution ions in...
Acceleration of low‐energy protons by quasi‐perpendicular shocks is investigated. The pitch angle distribution ions in the energy range 35 keV to 1 MeV has been determined across interplanetary shock that passed through ISEE 3 spacecraft on November 30, 1979. Upstream a bidirectional angular was observed. It suggested multiple crossings field line with surface shock, forming “magnetic bottle”, may account for such an unusual distribution. event modeled integrating particle trajectories...
We investigate ion densities derived from measurements by the Cassini Plasma Spectrometer, to determine how these ions are distributed around magnetodisk of Saturn. The is a variable plasma structure, here we fitted simple structural model Arridge et al. (2011) as reference for location central line magnetodisk. This study covers time range DOY 092–285, 2009, Saturnian equinox, along nine orbits spacecraft, each which included Titan flyby. also investigated covariance magnetic field...