While photoionization rates of Ganymede‘s O2 dominated atmosphere are well constrained, the contribution of electron-impact ionization is rather uncertain.
ionosphere
Posted inAtmospheres, Climate, Weather, Exoplanets, -moons, -comets, Magnetic Fields, Electromagnetism, bioelectricity,, Status Report
Atmospheric Mass Flux As A Function Of Ionospheric Emission On Unmagnetized Earth
We explore ion escape from, and solar ion deposition to, an unmagnetized Earth-like planet. We use RHybrid, an ion-kinetic electron-fluid code to simulate the global plasma interaction of unmagnetized Earth […]
Posted inAtmospheres, Climate, Weather, Magnetic Fields, Electromagnetism, bioelectricity,, Mapping, Geodesy, Cartography, Bathymetry, Mars, Missions & Hardware, Press Release, Space Weather & Heliophysics
NASA’s ESCAPADE Mission To Mars — Twin UC Berkeley Satellites Will Launch In Early November
The first dual-satellite mission to another planet, NASA’s ESCAPADE (Escape and Plasma Acceleration and Dynamics Explorers), is scheduled for launch no earlier than Sunday, Nov. 9, from Cape Canaveral, Florida. […]
Posted inAtmospheres, Climate, Weather, Exoplanets, -moons, -comets, Habitable Zones, Magnetic Fields, Electromagnetism, bioelectricity,, Space Weather & Heliophysics, Status Report
Impacts Of Tidal Locking On Magnetospheric Energy Input To Exoplanet Atmospheres
We investigate the effect of planetary corotation on energy dissipation within the magnetosphere-ionosphere system of exoplanets.
Posted inAstrogeology, Biosignatures & Paleobiology, Callisto, Icy Worlds, Jupiter, Press Release, Water/Hycean Worlds & Oceanography
Callisto Is Very Likely an Ocean World
More pocked with craters than any other object in our solar system, Jupiter’s outermost and second-biggest Galilean moon, Callisto, appears geologically unremarkable. In the 1990s, however, NASA’s Galileo spacecraft captured […]
Posted inGanymede, Icy Worlds, Jupiter, Magnetic Fields, Electromagnetism, bioelectricity,, Missions & Hardware, Radiation, Status Report
Ionosphere of Ganymede: Galileo Observations Versus Test Particle Simulation
In this paper, we model the plasma environment of Ganymede by means of a collisionless test particle simulation.
Posted inAtmospheres, Climate, Weather, Habitable Zones, Magnetic Fields, Electromagnetism, bioelectricity,, Mars, Press Release, Radiation, Space Weather & Heliophysics
Influence Of Upstream Solar Wind On Magnetic Field Distribution In The Martian Nightside Ionosphere
This study is led by Postdoctoral researcher Jiawei Gao from IGGCAS. Unlike Earth, Mars lacks a global dipolar magnetic field; the planet does have locally distributed crustal magnetic fields.
Posted inArctic / Antarctic / Alpine, Magnetic Fields, Electromagnetism, bioelectricity,, Press Release, Space Weather & Heliophysics
Discovery Of A Long-sought Global Electric Field On Earth
Using observations from a NASA suborbital rocket, an international team of scientists has, for the first time, successfully measured a planet-wide electric field thought to be as fundamental to Earth […]
Posted inAtmospheres, Climate, Weather, Biogeochemical Cycles & Geobiology, Mars, Space Weather & Heliophysics, Status Report
Characterizing The Current Systems In The Martian Ionosphere
When the solar wind interacts with the ionosphere of an unmagnetized planet, it induces currents that form an induced magnetosphere. These currents and their associated magnetic fields play a pivotal […]
Posted inMagnetic Fields, Electromagnetism, bioelectricity,, Mars, Space Weather & Heliophysics, Status Report, Venus
Properties Of Mars’ Dayside Low-Altitude Induced Magnetic Field And Comparisons With Venus
Our research objective is to characterize Mars’ low-altitude (250 km) induced magnetic fields using data from NASA’s MAVEN (Mars Atmosphere and Volatile EvolutioN) Mission.