Results 91 to 100 of about 9,065 (177)

Europa is Embedded in Non‐Maxwellian, Anisotropic Electron Distributions

Geophysical Research Letters, Volume 53, Issue 6, 28 March 2026.
Abstract In September 2022, the Juno spacecraft flew by Europa, providing new insight into the electron pitch angle and energy distributions via the Jovian Auroral Distributions Experiment electron analyzers (JADE‐E). We fit these observations with two anisotropic kappa distributions (cold and hot), accounting for spacecraft potential, which we find to
S. P. Ellis, J. R. Szalay, G. Livadiotis, S. R. Carberry Mogan, F. Allegrini, R. W. Ebert, M. Horányi, D. J. McComas, T. Oberg, Y. Sarkango, A. H. Sulaiman   +10 more
wiley   +1 more source

FOXTAIL: Modeling the nonlinear interaction between Alfv\'en eigenmodes and energetic particles in tokamaks

, 2016
FOXTAIL is a new hybrid magnetohydrodynamic-kinetic code used to describe interactions between energetic particles and Alfv\'en eigenmodes in tokamaks with realistic geometries.
Hellsten, Torbjörn, Johnson, Thomas, Tholerus, Emmi   +2 more
core   +1 more source

Short‐Term Variability of Jupiter's Satellite Footprints as Spotted by JWST

Geophysical Research Letters, Volume 53, Issue 5, 16 March 2026.
Abstract We present the main Alfvén wing (MAW) spots of Io and Europa as observed by the Near‐Infrared Spectrograph onboard the James Webb Space Telescope. These auroral footprint features have been measured previously, but only in emission. Here, the derived ionospheric H3+ ${\mathrm{H}}_{3}^{+}$ emission, temperature and column density are reported ...
Katie L. Knowles, H. Melin, T. S. Stallard, L. Moore, J. O’Donoghue, C. Schmidt, J. R. Szalay, P. I. Tiranti, K. Roberts, R. E. Johnson, E. M. Thomas   +10 more
wiley   +1 more source

Nonlinear wave interaction and spin models in the MHD regime

, 2011
Here we consider the influence on the electron spin in the MHD regime. Recently developed models which include spin-velocity correlations are taken as a starting point. A theoretical argument is presented, suggesting that in the MHD regime a single fluid
Brodin G, G Brodin, Haas F, Harding A K, Harding A K, J Lundin, J Zamanian, Larsson J, M Stefan, Manfredi G, Shukla P K, Weiland J, Zamanian J   +12 more
core   +1 more source

Electron heating in kinetic-Alfvén-wave turbulence. [PDF]

Proc Natl Acad Sci U S A, 2023
Zhou M, Liu Z, Loureiro NF.
europepmc   +1 more source

AWSoM Magnetohydrodynamic Simulation of a Solar Active Region. II. Statistical Analysis of Alfvén Wave Dissipation and Reflection, Scaling Laws, and Energy Budget on Coronal Loops

The Astrophysical Journal
The coronal heating problem has been a major challenge in solar physics, and a tremendous amount of effort has been made over the past several decades to solve it.
Tong Shi, Ward Manchester IV, Enrico Landi, Bart van der Holst, Judit Szente, Yuxi Chen, Gábor Tóth, Luca Bertello, Alexander Pevtsov   +8 more
doaj   +1 more source

Wave-particle energy exchange directly observed in a kinetic Alfvén-branch wave

Nature Communications, 2017
Alfvén waves are fundamental plasma modes that provide a mechanism for the transfer of energy between particles and fields. Here the authors confirm experimentally the conservative energy exchange between Alfvén wave fields and plasma particles via high ...
Daniel J. Gershman, Adolfo F-Viñas, John C. Dorelli, Scott A. Boardsen, Levon A. Avanov, Paul M. Bellan, Steven J. Schwartz, Benoit Lavraud, Victoria N. Coffey, Michael O. Chandler, Yoshifumi Saito, William R. Paterson, Stephen A. Fuselier, Robert E. Ergun, Robert J. Strangeway, Christopher T. Russell, Barbara L. Giles, Craig J. Pollock, Roy B. Torbert, James L. Burch   +19 more
doaj   +1 more source

Modeling the Effects of a Light Bridge on Properties of Magnetohydrodynamic Waves in Solar Pores

The Astrophysical Journal
Solar pores are ideal magnetic structures for wave propagation and transport of energy radially outwards across the upper layers of the solar atmosphere.
Luiz A. C. A. Schiavo, Mykola Gordovskyy, Philippa K. Browning, Suzana de Souza e Almeida Silva, Gary Verth, Istvan Ballai, Sergiy Shelyag, Sergey N. Ruzheinikov, James A. McLaughlin, Viktor Fedun   +9 more
doaj   +1 more source

Direct Evidence for Two-Fluid Effects in Molecular Clouds

, 2010
We present a combination of theoretical and simulation-based examinations of the role of two-fluid ambipolar drift on molecular line widths. The dissipation provided by ion-neutral interactions can produce a significant difference between the widths of ...
Ballesteros-Paredes, Balsara, Balsara, Balsara, Balsara, Balsara, Balsara, Basu, Bergin, Crutcher, Crutcher, Crutcher, David A. Tilley, Dinshaw S. Balsara, Fiedler, Jijina, Klessen, Langer, Li, Li, Mac Low, O'Sullivan, O'Sullivan, Oishi, Ostriker, Tassis, Tilley, Zweibel, Zweibel   +28 more
core   +1 more source

Prevalence of Small-scale Jets from the Networks of the Solar Transition Region and Chromosphere

, 2014
As the interface between the Sun's photosphere and corona, the chromosphere and transition region play a key role in the formation and acceleration of the solar wind.
Boerner, P., Carlsson, M., Cranmer, S. R., De Pontieu, B., DeLuca, E. E., Golub, L., Hansteen, V., Hurlburt, N., Jaeggli, S., Kankelborg, C., Kleint, L., Lemen, J., Martínez-Sykora, J., McCauley, P., McIntosh, S. W., McKillop, S., Miralles, M. P., Murphy, N., Peter, H., Reeves, K. K., Saar, S., Tarbell, T. D., Testa, P., Tian, H., Title, A., Weber, M., Wuelser, J. P.   +26 more
core   +1 more source