Results 1 to 10 of about 12,867 (157)

Enhanced Energetic Neutral Atom Imaging [PDF]

Frontiers in Astronomy and Space Sciences, 2019
Over the past two decades, instruments designed to image plasmas in energetic neutral atom (ENA) emission have flown in space. In contrast to typical satellite-based in situ instruments, ENA imagers provide a global view of the magnetosphere because they
Earl E. Scime, Amy M. Keesee
doaj   +2 more sources

Deducing Lunar Regolith Porosity From Energetic Neutral Atom Emission

Geophysical Research Letters, 2022
The porosity of the upper layers of regolith is key to the interaction of an airless planetary body with precipitating radiation, but it remains difficult to characterize.
P. S. Szabo, A. R. Poppe, H. Biber, A. Mutzke, J. Pichler, N. Jäggi, A. Galli, P. Wurz, F. Aumayr   +8 more
doaj   +2 more sources

Energetic Neutral Atom Imaging of the Earth’s Ring Current and Some Results from the Chinese Double Star Program

Magnetochemistry, 2023
The ring current region in the Earth’s magnetosphere contains energetic charged particles, which are injected from the magnetotail, get trapped in the inner magnetosphere, and finally drift around the Earth.
Zhiqing Chen, Chao Shen, Qiong Wu, Li Lu, Xianguo Zhang, Qinglong Yu   +5 more
doaj   +3 more sources

The IMAP-Ultra Energetic Neutral Atom (ENA) Imager. [PDF]

Space Sci Rev
NASA's Interstellar Mapping and Acceleration Probe (IMAP), a spinner spacecraft in orbit around L1, is taking in situ observations of thermal, pickup, and energetic particles, while simultaneously remotely sensing the effects that these particles have in the outer heliosphere, by measuring Energetic Neutral Atoms (ENA) emissions produced by neutralized
Gkioulidou M, Clark GB, Mitchell DG, Dupont AR, Anderson KL, Begley S, Bzowski M, Christian ER, Cook CE, Crew AB, Cully MJ, DeMajistre R, Diaz TJ, Drexler RJ, Dutton NT, Gingrich CJ, Hayes JR, Huber CM, Hutcheson J, Jaskulek SE, Kollmann P, LeBlanc MT, Lees J, McComas DJ, Nelson KS, Parker CW, Reisenfeld DB, Rollend EA, Schlemm CE, Schwadron NA, Verrill R, Yen J, Yin J.   +32 more
europepmc   +3 more sources

Energetic neutral atom imaging reveals nearly 11-year cycle of the ring current of Saturn [PDF]

Nature Communications
The drift motion of energetic charged particles can generate an azimuthal electric current around the planet known as the ring current, which regulates the field configuration of the magnetosphere.
Yimeng Li, Chao Yue, Yixin Sun, Xianzhe Jia, Qiugang Zong, Xuzhi Zhou   +5 more
doaj   +2 more sources

Energetic neutral atom imaging of the lunar surface [PDF]

Journal of Geophysical Research: Space Physics, 2013
Since the Moon is not shielded by a global magnetic field or by an atmosphere, solar wind plasma impinges onto the lunar surface almost unhindered. Until recently, it was assumed that almost all of the impinging solar wind ions are absorbed by the surface.
Mats Holmström, Martin Wieser, Peter Würz   +2 more
exaly   +3 more sources

The Statistical Morphology of Saturn’s Equatorial Energetic Neutral Atom Emission [PDF]

Geophysical Research Letters, 2021
AbstractSaturn’s magnetosphere is an efficient emitter of energetic neutral atoms (ENAs), created through charge exchange of energetic ions with the extended neutral cloud originating from the icy moon Enceladus. We present an analysis using the complete image set captured by Cassini’s Ion Neutral Camera to characterize Saturn’s average ENA morphology.
Gabrielle Provan, David Constable, Joe Kinrade   +2 more
exaly   +3 more sources

Viewing perspective in energetic neutral atom intensity [PDF]

Journal of Geophysical Research, 2008
Through interspacecraft comparison of energetic neutral oxygen (ENO) intensity from two different vantage points provided by IMAGE and Geotail, Lui et al. (2005) showed that viewing perspective plays a very important role in the observed ENO intensity level during a magnetic storm period. Motivated by the findings of Lui et al.
Mei-Ching Fok, Anthony Lui
exaly   +2 more sources

Energetic neutral atom imaging of comets

Geophysical Research Letters, 2008
We present the first computer simulated images of energetic neutral atoms (ENAs) produced by charge exchange between solar wind protons and cometary neutrals. Proton bulk flow and temperature from MHD simulations are used along with a model of cometary neutral densities.
Herbert Gunell, Mats Holmström
exaly   +2 more sources

Mesoscale Structures in Earth's Magnetotail Observed Using Energetic Neutral Atom Imaging [PDF]

Geophysical Research Letters, 2021
Christopher Mouikis, Natalia Buzulukova, Amy Keesee   +2 more
exaly   +2 more sources