Results 61 to 70 of about 1,035 (178)

Modeling the Detectability of Energetic Heliospheric Ions at Pluto During the New Horizons Flyby

Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.
Abstract We investigate the detectability of heliospheric helium ions at energies up to 100 keV by the New Horizons (NH) spacecraft during its flyby through Pluto's induced magnetosphere. The Pluto Energetic Particle Spectrometer Science Investigation energetic ion detector observed a reduction in their flux by an order of magnitude as the spacecraft ...
Randall T. Ruch, Sven Simon, Peter Kollmann, C. Michael Haynes   +3 more
wiley   +1 more source

Voyager VLISM Electron Density Dataset

The Astrophysical Journal Supplement Series
This paper is a companion to an electron density dataset submitted to both the Planetary Data System and the Space Physics Data Facility for measurements by the Voyager Plasma Wave Science (PWS) instrument in the very local interstellar medium.
W. S. Kurth, L. J. Granroth, J. B. Faden
doaj   +1 more source

MAGNETICALLY CONFINED INTERSTELLAR HOT PLASMA IN THE NUCLEAR BULGE OF OUR GALAXY [PDF]

The Astrophysical Journal, 2013
8 pages, 6 figures, accepted for publication in ApJ ...
Nishiyama, Shogo, Yasui, Kazuki, Nagata, Tatsuya, Yoshikawa, Tatsuhito, Uchiyama, Hideki, Schödel, Rainer, Hatano, H., Sato, S., Sugitani, Koji, Suenaga, T., Kwon, J., Tamura, Motohide   +11 more
openaire   +4 more sources

Ryugu reference project: Recommendations from the measurement definition team

Meteoritics &Planetary Science, Volume 61, Issue 5, Page 819-848, May 2026.
Abstract Sample return missions play a significant role in planetary science by providing pristine extraterrestrial materials. JAXA's Hayabusa2 and NASA's OSIRIS‐REx missions have returned samples from the C‐type asteroids Ryugu and Bennu, respectively. The chemical and mineralogical compositions of these samples closely resemble those of CI chondrites,
Tetsuya Yokoyama, Guillaume Avice, Henner Busemann, Nicolas Dauphas, Daniel P. Glavin, Ashley J. King, Thorsten Kleine, Katharina Lodders, Frederic Moynier, Maria Schönbächler, Yoshinori Takano, Kun Wang, Hikaru Yabuta, Yuma Enokido, Ryota Fukai, Shogo Tachibana, Tomohiro Usui   +16 more
wiley   +1 more source

Deciphering the “Missing Xenon Paradox” in Celestial Bodies: A Multifaceted Perspective Toward Demystifying This Enigma

Journal of Geophysical Research: Planets, Volume 131, Issue 4, April 2026.
Abstract Xenon (Xe) is a heavy noble gas with intriguing chemical properties, such as having several stable isotopes and the ability to form compounds under extreme conditions. Despite the predictions based on cosmochemical models that suggest xenon should be relatively abundant in planetary reservoirs, empirical data indicate a significant depletion ...
Avinash Kumar Both, Avradip Ghosh, Chin Li Cheung   +2 more
wiley   +1 more source

State of the Early Career Profession in Space Physics and Aeronomy: Climatological Survey Results

Journal of Geophysical Research: Space Physics, Volume 131, Issue 4, April 2026.
Abstract The American Geophysical Union (AGU) Space Physics & Aeronomy (SPA) section comprises scientists who study the Sun, solar wind, and planetary magnetospheres, ionospheres, and thermospheric/mesospheric systems along with their interconnections.
R. C. Allen, B. Gallardo‐Lacourt, S. Raptis, C. R. Gilly, L. C. Gasque, B. L. Alterman, J. C. Buitrago‐Casas, E. P. Macho, G. Malhotra, R. M. McGranaghan, P. Mostafavi, S. K. Vines   +11 more
wiley   +1 more source

Extreme ultraviolet spectrum of a hot interstellar plasma

The Astrophysical Journal Supplement Series, 1978
The EUV (100-1000 A) spectrum of an optically thin plasma over the temperature range 100,000-10 million K is calculated, and the effects of free-free, free-bound, and two-photon continuum radiation are considered. The resulting spectra are presented in graphical form, with a separate tabulation of intensities for the emission lines.
R. Stern, E. Wang, S. Bowyer
openaire   +1 more source

Mirror Mode Mediated EMIC Wave Generation in the Magnetosheath

Geophysical Research Letters, Volume 53, Issue 6, 28 March 2026.
Abstract Electromagnetic ion cyclotron (EMIC) waves and mirror modes (MMs), both driven by ion temperature anisotropy, are commonly observed in planetary magnetosheaths. Conventional explanations for their co‐occurrence are largely based on linear instability theory in proton–electron plasmas, which requires comparable growth rates for the EMIC and MM ...
Yifan Wu, Chen Shi, Xiaoman Liu, Lei Dai, Jinsong Zhao, Xin Tao   +5 more
wiley   +1 more source

Scattering of Continuously Injected Pickup Ions of Oblique Pickup Angles in the Outer Heliosheath

The Astrophysical Journal
Pitch angle scattering of pickup ions (PUIs) in the outer heliosheath is studied using two-dimensional hybrid simulations, with the PUIs continuously injected at specified injection rates and pickup angles.
Ding Sheng, Kaijun Liu, Vladimir Florinski, Xiaocheng Guo   +3 more
doaj   +1 more source

Investigating Extreme Scattering Events by Volumetric Ray-tracing

The Astrophysical Journal
Extreme scattering events (ESEs) are observed as dramatic (>50%) drops in flux density that occur over an extended period of weeks to months. Discrete plasma lensing structures are theorized to scatter the radio waves produced by distant sources such as ...
Kelvin Au, Jason D. Fiege, Adam Rogers
doaj   +1 more source