J. Peachey
A5055584915- Astro and Planetary Science
- Planetary Science and Exploration
- Ionosphere and magnetosphere dynamics
- Earthquake Detection and Analysis
- High-pressure geophysics and materials
- Space Exploration and Technology
- Geomagnetism and Paleomagnetism Studies
- Spaceflight effects on biology
- Solar and Space Plasma Dynamics
- Gamma-ray bursts and supernovae
- Geological and Geochemical Analysis
- Isotope Analysis in Ecology
- earthquake and tectonic studies
Johns Hopkins University Applied Physics Laboratory
2017-2023
Abstract Although no known asteroid poses a threat to Earth for at least the next century, catalogue of near-Earth asteroids is incomplete objects whose impacts would produce regional devastation 1,2 . Several approaches have been proposed potentially prevent an impact with by deflecting or disrupting 1–3 A test kinetic technology was identified as highest-priority space mission related mitigation 1 NASA’s Double Asteroid Redirection Test (DART) full-scale technology. The mission’s target...
Abstract Two new Juno‐observed particle features of Jupiter's main aurora demonstrate substantial diversity processes generating mysterious auroral emissions. It was previously speculated that sometimes‐observed potential‐driven (up to 400 kV) can turn into broadband stochastic acceleration (dominating at Jupiter) by means instability. Here direct evidence for such a process is revealed with “mono‐energetic” electron inverted‐V rising in energy 200 keV, transforming region downward fluxes...
Abstract NASA's Juno spacecraft successfully completed its first science polar pass over Jupiter's northern and southern aurora, with all the instruments powered, on 27 August 2016. Observations of conical energetic proton distributions at low altitudes (<6 R J ) region are interpreted as resulting from transversely (to local magnetic field lines) accelerated H + a position planetward point observation. The conics were observed within broad upward beaming electrons accompanied by...