N. Krupp
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View article: Energetic Ion Losses Observed During Juno's Close Encounter With Europa
Energetic Ion Losses Observed During Juno's Close Encounter With Europa Open
We present energetic ion observations made by Juno during its close Europa flyby on 29 September 2022. These data show significant reductions in the ion intensities occurring in the moon's geometric wake region. The most significant losses…
View article: Identifying Fast Plasma Injections in Data From Saturn
Identifying Fast Plasma Injections in Data From Saturn Open
In Paranicas et al. (2020), https://doi.org/10.1029/2020ja028299 , we reported on a method to estimate the inflow speed of interchange injections in Saturn's magnetosphere. The procedure relies on phase space density conservation and mappi…
View article: A slot region in the magnetosphere of Jupiter
A slot region in the magnetosphere of Jupiter Open
Understanding the balance between charged particle acceleration and loss is central to radiation belt research. Jupiter’s Galilean moons orbit within its intense radiation environment and can act both as sources and sinks of energetic part…
View article: Observations of the JUICE PEP JEI plasma spectrometer during the Moon and Earth flyby in August 2024
Observations of the JUICE PEP JEI plasma spectrometer during the Moon and Earth flyby in August 2024 Open
The plasma spectrometer JEI is an ion and electron spectrometer designed to observe the thermal and medium energy charged particle environement of Jupiter. It is part of the PEP instrument onboard JUICE. The flyby through the Earth-Moon sy…
View article: Ramses Plasma Spectrometer (RPS) onboard the Ramses mission to characterize the environment of Apophis and its surface properties
Ramses Plasma Spectrometer (RPS) onboard the Ramses mission to characterize the environment of Apophis and its surface properties Open
The flyby of asteroid 99942 Apophis in 2029 offers the unique opportunity to study the interaction of an asteroid with the Earth magnetosphere. By measuring the spatial and energy distribution of positive and negative particles in close pr…
View article: Sodium Ion Distribution in Mercury's Magnetosphere as seen from MSB1234
Sodium Ion Distribution in Mercury's Magnetosphere as seen from MSB1234 Open
Mercury's environment is populated with a tenuous exosphere consisting mostly of sodium. After ionization by solar radiation, these sodium ions take peculiar paths through the magnetosphere; being trapped along dipolar magnetic field lines…
View article: Determining the composition of Jupiter’s energetic ion environment: some preliminary results based on the analysis of Galileo/HIC observations
Determining the composition of Jupiter’s energetic ion environment: some preliminary results based on the analysis of Galileo/HIC observations Open
Jupiter’s radiation belts represent one of the most extreme particle environments in the solar system—not only due to their intense fluxes of energetic electrons and protons, but also because they host a diverse, high-flux population of he…
View article: Probing Jupiter’s Inner Radiation Belts: Multi-Timescale Variability Revealed by Juno
Probing Jupiter’s Inner Radiation Belts: Multi-Timescale Variability Revealed by Juno Open
Jupiter hosts the most intense electron radiation belts in our solar system—so energetic that relativistic electrons emit synchrotron radiation detectable at radio wavelengths. However, direct in-situ measurements of these belts are except…
View article: Mission Design and Target Selection for PRIAMOS, a European Asteroid Sample Return Mission
Mission Design and Target Selection for PRIAMOS, a European Asteroid Sample Return Mission Open
We report on the mission design and the target selection for the PRIAMOS (PRImordial Asteroid Mission to understand the Origin of the Solar system) mission to a D-type asteroid in a near Earth orbit [1]. PRIAMOS consists of a lander/return…
View article: He <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si46.svg" display="inline" id="d1e711"> <mml:msup> <mml:mrow/> <mml:mrow> <mml:mo>+</mml:mo> </mml:mrow> </mml:msup> </mml:math> ions in the vicinity of mercury observed by the MESSENGER and BepiColombo spacecraft
He ions in the vicinity of mercury observed by the MESSENGER and BepiColombo spacecraft Open
View article: Magnetosphere and Plasma Science with the Jupiter Icy Moons Explorer
Magnetosphere and Plasma Science with the Jupiter Icy Moons Explorer Open
View article: Jupiter's Whistler‐Mode Belts and Electron Slot Region
Jupiter's Whistler‐Mode Belts and Electron Slot Region Open
The spatial distribution of whistler‐mode wave emissions in the Jovian magnetosphere measured during the first 45 perijove orbits of Juno is investigated. A double‐belt structure in whistler‐mode wave intensity is revealed. Between the two…
View article: Acceleration of Energetic Electrons in Jovian Middle Magnetosphere by Whistler‐Mode Waves
Acceleration of Energetic Electrons in Jovian Middle Magnetosphere by Whistler‐Mode Waves Open
An abundant multi‐MeV electron population beyond the orbit of Io is required to explain the intense inner radiation belt (electrons MeV) at Jupiter and its synchrotron radiation. In order to better understand the synergistic effect of radi…
View article: The anomalous state of Uranus’s magnetosphere during the Voyager 2 flyby
The anomalous state of Uranus’s magnetosphere during the Voyager 2 flyby Open
The Voyager 2 flyby of Uranus in 1986 revealed an unusually oblique and off-centred magnetic field. This single in situ measurement has been the basis of our interpretation of Uranus’s magnetosphere as the canonical extreme magnetosphere o…
View article: Mercury’s plasma environment after BepiColombo’s third flyby
Mercury’s plasma environment after BepiColombo’s third flyby Open
View article: Structure and dynamics of the hermean magnetosphere revealed by electron observationsafter the first three Mercury flybys of BepiColombo, 50 years after Mariner 10.
Structure and dynamics of the hermean magnetosphere revealed by electron observationsafter the first three Mercury flybys of BepiColombo, 50 years after Mariner 10. Open
The Mercury Electron Analyzer (MEA) obtained new electron observations during the first threeMercury swingbys (MSBs) by BepiColombo on 01 October 2021 (MSB1), 23 June 2022 (MSB2),and 19 June 2023 (MSB3). We identify the magnetospheric boun…
View article: Planetary Defense Clues from Returning Samples from a Near Earth Asteroid (NEA) &#8211; Apophis Encounter as a Unique Chance
Planetary Defense Clues from Returning Samples from a Near Earth Asteroid (NEA) – Apophis Encounter as a Unique Chance Open
The upcoming passing of (99942) Apophis by Earth in 2029 within just a few ten thousand km presents a unique opportunity to study a potentially hazardous Near Earth Asteroid (PHA, NEA). This opportunity will be used by ground based observa…
View article: Observations of the JUICE PEP JEI plasma spectrometer during the Moon and Earth flyby in August 2024
Observations of the JUICE PEP JEI plasma spectrometer during the Moon and Earth flyby in August 2024 Open
The plasma spectrometer JEI is an ion and electron spectrometer designed to observe the thermal and medium energy charged particle environement of Jupiter. It is part of the PEP instrument onboard JUICE. The flyby through the Earth-M…
View article: BepiColombo observations of cold oxygen and carbon ions in the flank of the induced magnetosphere of Venus
BepiColombo observations of cold oxygen and carbon ions in the flank of the induced magnetosphere of Venus Open
On 10 August 2021, the Mercury-bound BepiColombo spacecraft performed its second fly-by of Venus and provided a short-lived observation of its induced magnetosphere. Here we report results recorded by the Mass Spectrum Analyzer on board Mi…
View article: Jupiter's Whistler-mode Belts and Electron Slot Region
Jupiter's Whistler-mode Belts and Electron Slot Region Open
The spatial distribution of whistler-mode wave emissions in the Jovian magnetosphere measured during the first 45 perijove orbits of Juno is investigated. A double-belt structure in whistler-mode wave intensity is revealed. Between the two…
View article: Unique Heliospheric Measurement Opportunities with the ESA JUICE mission: Science Case for Particle Environment Package (PEP)
Unique Heliospheric Measurement Opportunities with the ESA JUICE mission: Science Case for Particle Environment Package (PEP) Open
The Jupiter bound JUICE mission (JUpiter ICy moons Explorer) was successfully launched on April 14, 2023 and is currently executing its 8-year interplanetary cruise phase. JUICE carries three comprehensive instrument suites to fully charac…
View article: Energetic charged particle observations of Europa&#8217;s near-space environment during the Juno PJ45 flyby and anticipations for the JUICE mission&#160;
Energetic charged particle observations of Europa’s near-space environment during the Juno PJ45 flyby and anticipations for the JUICE mission  Open
Jupiter’s moon Europa is of high scientific interest because it is an ocean world with a tenuous atmosphere and may also harbor sporadic water plumes. Europa is also embedded deep within Jupiter’s magnetosphere and resides in a…
View article: The Jovian Electron and Ion Spectrometer (PEP-JEI) for the JUICE mission
The Jovian Electron and Ion Spectrometer (PEP-JEI) for the JUICE mission Open
The magnetosphere of Jupiter is apart from the Sun the strongest source of charged particles in the Solar system. The interaction of these particles with the exospheres of the Jovian moons forms one of the most complex plasma laboratories …
View article: Energetic Neutral Atom (ENA) Imaging and In-Situ Energetic Particle Exploration of the Jovian Magnetosphere and Moon Environment from JUICE/PEP
Energetic Neutral Atom (ENA) Imaging and In-Situ Energetic Particle Exploration of the Jovian Magnetosphere and Moon Environment from JUICE/PEP Open
The Jovian Energetic Neutrals and Ions (JENI) Camera and the Jovian Energetic Electrons (JoEE) belong to the six-sensor suite Particle Environment Package (PEP) on board the JUICE mission. JENI is a combined ion and ENA camera with 90˚…
View article: Energetic particle measurements near Ganymede: Galileo EPD data revisited and perspectives for Juice PEP
Energetic particle measurements near Ganymede: Galileo EPD data revisited and perspectives for Juice PEP Open
The Galileo spacecraft performed close flybys of the moon Ganymede between 1996 and 2001. We reanalysed data of the energetic particles detector EPD onboard Galileo and derived the particle fluxes, energy spectra, and pitch angle dis…
View article: Galileo Observation of Electron Spectra Dawn‐Dusk Asymmetry in the Middle Jovian Magnetosphere: Evidence for Convection Electric Field
Galileo Observation of Electron Spectra Dawn‐Dusk Asymmetry in the Middle Jovian Magnetosphere: Evidence for Convection Electric Field Open
In Jupiter's middle magnetosphere, debate remains on the controlling physics of electron acceleration to the ultrarelativistic regime. Some local‐time asymmetric processes regulating MeV electrons may have their hold across electron spectr…
View article: Spacecraft Outgassing Observed by the BepiColombo Ion Spectrometers
Spacecraft Outgassing Observed by the BepiColombo Ion Spectrometers Open
During the first flyby of the BepiColombo composite spacecraft at Mercury in October 2021 ion spectrometers observed two intense spectral lines with energies between 10 and 70 eV. The spectral lines persisted also at larger distances from …
View article: Pitch Angle Distributions of Energetic Particles Near Callisto
Pitch Angle Distributions of Energetic Particles Near Callisto Open
The Galileo spacecraft performed close flybys of the moon Callisto between 1996 and 2001. We reanalyzed particle data of the energetic particles detector onboard Galileo and derived pitch angle distributions in the energy range of several …
View article: Spacecraft outgassing observed by the BepiColombo ion spectrometers
Spacecraft outgassing observed by the BepiColombo ion spectrometers Open
During the first flyby of the BepiColombo composite spacecraft at Mercury in October2021 ion spectrometers observed two intense spectral lines with energies between 10 and70eV. The spectral lines persisted also at larger distances from Mer…
View article: Direct evidence of substorm-related impulsive injections of electrons at Mercury
Direct evidence of substorm-related impulsive injections of electrons at Mercury Open
Mercury’s magnetosphere is known to involve fundamental processes releasing particles and energy like at Earth due to the solar wind interaction. The resulting cycle is however much faster and involves acceleration, transport, loss, and re…