Results 31 to 40 of about 338 (131)

Spatial Scales of Electron Density Fluctuations in the Martian Ionosphere

The Astrophysical Journal
In recent Martian ionospheric studies, the spatial scales of electron density irregularities have been computed using magnetic field measurements by treating these fluctuations as electromagnetic.
Chougule Prathmesh, Bharati Kakad, Amar Kakad   +2 more
doaj   +1 more source

Report and Assessment of the CEDAR Workshop Demographics Between 2021 and 2024

Earth and Space Science, Volume 13, Issue 5, May 2026.
Abstract The Coupling, Energetics, and Dynamics of Atmospheric Regions (CEDAR) workshop is funded by the US National Science Foundation and held annually in the US to serve terrestrial aeronomy researchers. The CEDAR community consists of engineers, scientists, and externally funded professionals ranging from students to emeritus in their career stage ...
Angeline G. Burrell, Astrid Maute, McArthur Jones Jr.   +2 more
wiley   +1 more source

An Estimate of the Importance of Electron-stimulated Desorption of Sodium at Mercury

The Planetary Science Journal
We revisit the importance of electron-stimulated Desorption (ESD) as a source of neutral sodium (Na) atoms and Na ^+ ions in Mercury’s exosphere and ionosphere.
Rosemary M. Killen, Jason L. McLain, Matthew H. Burger, Orenthal J. Tucker, Liam S. Morrissey, Ronald J. Vervack Jr.   +5 more
doaj   +1 more source

Constraining Electron‐Impact Ionization of O2 Through UV Aurora Observations at Ganymede

Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.
Abstract While photoionization rates of Ganymede's O2 ${\mathrm{O}}_{2}$ dominated atmosphere are well constrained, the contribution of electron‐impact ionization is rather uncertain. Previous quantitative estimates have relied on assumptions about densities and energy distributions of precipitating electrons, or on rare spacecraft measurements that ...
Stefan Duling, Joachim Saur, Darrell Strobel, Philippa Molyneux, Jamey R. Szalay, Thomas K. Greathouse   +5 more
wiley   +1 more source

Power Spectral Characteristics of Martian Ionospheric Irregularities

The Astrophysical Journal
The intrinsic magnetic field of a planet plays a key role in its ionospheric dynamics. Mars lacks a global magnetic field, thus ionospheric plasma is weakly coupled to crustal and induced magnetic field.
Chougule Prathmesh, Bharati Kakad, Amar Kakad   +2 more
doaj   +1 more source

Thermal Segregation and Reddening in Europa's Double Ridges

Journal of Geophysical Research: Planets, Volume 131, Issue 5, May 2026.
Abstract Europa's double ridges often display lower albedo and redder color than their surroundings. Their unique topography may cause sublimation‐driven darkening due to illumination and self‐heating—the process of thermal segregation. We apply an advanced 3D thermophysical model, including shadowing and self‐heating through mutual exchange of ...
Kya C. Sorli, Paul O. Hayne, Lucas Lange, Sylvain Piqueux   +3 more
wiley   +1 more source

The Colocation of Magnetic Reconnection and Current Disruption in Jovian Middle Magnetosphere

The Astrophysical Journal Letters
Magnetic reconnection and current disruption are two key processes in driving energy conversion and dissipation in planetary magnetospheres. At the Earth, the two processes usually occur at different locations: the current disruption process occurs more ...
Dong-Xiao Pan, Zhong-Hua Yao, Rui-Long Guo, Christopher S. Arridge, Licia C. Ray, Yong Zhao, George Clark, I. Jonathan Rae, Anthony T. Y. Lui, Bin-Zheng Zhang, Yong Wei, Xu-Zhi Zhou, Hui-Shan Fu, John E. P. Connerney, Scott J. Bolton   +14 more
doaj   +1 more source

The Influence of Surface Binding Energy on Sputtering in Models of the Sodium Exosphere of Mercury

The Planetary Science Journal, 2022
We have simulated the sodium (Na) exosphere of Mercury to show how the exosphere is affected by the assumed surface binding energy (SBE) of Na in the sputtered component.
Rosemary M. Killen, Liam S. Morrissey, Matthew H. Burger, Ronald J. Vervack Jr., Orenthal J. Tucker, Daniel W. Savin   +5 more
doaj   +1 more source

Solar Wind‐Magnetosphere‐Ionosphere Coupling During the October 2024 Storms

Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.
Abstract Two geomagnetic storms occurred in October 2024 (Oct 6‐9 and 10–12), driven by the impact of a series of interplanetary coronal mass ejections on the magnetosphere. The first was a moderate storm, with peak Sym‐H near −150 nT, whereas the second was intense, Sym‐H reaching −340 nT.
S. E. Milan, M. K. Mooney, G. E. Bower, R. M. Hodnett, U. V. Amerstorfer, C. Möstl, A. Samsonov, B. J. Anderson, J. Gjerloev, S. K. Vines   +9 more
wiley   +1 more source

Electron Energization within an Ion-scale Flux Rope Chain in Earth’s Turbulent Magnetotail Plasma Sheet

The Astrophysical Journal
Flux ropes in space plasma can play an important role in particle acceleration. However, the mechanisms of electron energization and the resulting electron energy distribution associated with flux ropes are still not fully understood. This study examines
Nitya Agarwala, Weijie Sun, Gangkai Poh, Shan Wang, Andy Smith, James A. Slavin, Guan Le, James L. Burch   +7 more
doaj   +1 more source