Results 121 to 130 of about 78,626 (296)

The High Plasma Density Observed Along the PJ57 Juno Flyby of Io Implies the Presence of a Dense Atomic Corona

Journal of Geophysical Research: Space Physics, Volume 131, Issue 1, January 2026.
Abstract On December 2023, the Juno spacecraft made a flyby of Io above the northern hemisphere at a closest approach (CA) altitude of ∼1,500 km (PJ57). The Juno/Waves and Radio‐occultation measurements showed a surprising large electron density ∼28,000 cm−3 near closest approach.
V. Dols, F. Bagenal
wiley   +1 more source

Particle Acceleration in Relativistic Alfvénic Turbulence

The Astrophysical Journal
Strong magnetically dominated Alfvénic turbulence is an efficient engine of nonthermal particle acceleration in a relativistic collisionless plasma.
Cristian Vega, Stanislav Boldyrev, Vadim Roytershteyn   +2 more
doaj   +1 more source

Feasibility study of a compact and multi-gas supersonic plasma jet for nuclear astrophysics and space research

, 2023
D. Rapagnani, Luigi Cutrone, Giuliano Ranuzzi, Mario De Stefano Fumo, L. Savino, M. De Cesare, R. Buompane, A. Del Vecchio, A. Di Leva, J. G. Duarte, L. Morales-Gallegos, M. Romoli, Antonio Schettino, L. Gialanella   +13 more
openalex   +1 more source

Using high energy density plasmas for nuclear experiments relevant to nuclear astrophysics [PDF]

, 2023

openalex   +1 more source

Longitudinal Variability of Pre‐Midnight Equatorial Plasma Bubbles Under Disturbed Geomagnetic Conditions

Journal of Geophysical Research: Space Physics, Volume 131, Issue 1, January 2026.
Abstract Equatorial plasma bubbles (EPBs) pose significant challenges to trans‐ionospheric radio communication and navigation systems. Because of their disruptive effects, evaluating and predicting them is key for the development of space systems. The influence of geomagnetic activity on EPBs remains unclear, partly due to limited low‐latitude neutral ...
Gilda de Lourdes González, Thomas J. Immel, Yen‐Jung Wu, L. Claire Gasque, Brian J. Harding, Colin Triplett, Cesar E. Valladares   +6 more
wiley   +1 more source

The Theory of Resonant Cosmic Ray–driven Instabilities—Growth and Saturation of Single Modes

The Astrophysical Journal
Cosmic-ray (CR) feedback is critical for galaxy formation as CRs drive galactic winds, regularize star formation in galaxies, and escape from active galactic nuclei to heat the cooling cores of galaxy clusters.
Rouven Lemmerz, Mohamad Shalaby, Christoph Pfrommer, Timon Thomas   +3 more
doaj   +1 more source

The Origin of Non‐Gyrotropic Distribution Functions in Compressed Current Sheets

Journal of Geophysical Research: Space Physics, Volume 131, Issue 1, January 2026.
Abstract Non‐gyrotropic distribution functions are often observed in thin current sheets prior to magnetic reconnection. This study uses NASA's Magnetospheric Multiscale mission data to confirm a novel source of agyrotropy in compressed current sheets and highlights its significance in reconnection.
Ami M. DuBois, Chris Crabtree, Emily Lichko, Gurudas Ganguli   +3 more
wiley   +1 more source

Computing and data processing [PDF]

The applications of computers and data processing to astronomy are discussed. Among the topics covered are the emerging national information infrastructure, workstations and supercomputers, supertelescopes, digital astronomy, astrophysics in a numerical ...
Arnett, David W., Cameron, Alastair G. W., Crutcher, Richard M., Helfand, David J., Horowitz, Paul, Kleinmann, Susan G., Linsky, Jeffrey L., Madore, Barry F., Press, William, Smarr, Larry   +9 more
core   +1 more source

Role of Large‐Scale Traveling Ionospheric Disturbances in the Positive Storm Phase Observed by the Millstone Hill Radar and GNSS TEC Measurements

Journal of Geophysical Research: Space Physics, Volume 131, Issue 1, January 2026.
Abstract A moderate geomagnetic storm was driven by high‐speed solar wind stream on 14 March 2016. We show that large‐scale traveling ionospheric disturbances (LSTIDs) played a significant role in producing the ionospheric storm positive phase at mid‐latitudes in the North American sector.
G. P. Geethakumari, A. T. Aikio, L. Cai, H. Vanhamäki, I. I. Virtanen, A. Coster, A. Maute, A. Marchaudon, P.‐L. Blelly   +8 more
wiley   +1 more source

An Exactly Energy-conserving Electromagnetic Particle-in-cell Method in Curvilinear Coordinates

The Astrophysical Journal Supplement Series
In this paper, we introduce and discuss an exactly energy-conserving particle-in-cell method for arbitrary curvilinear coordinates. The flexibility provided by curvilinear coordinates enables the study of plasmas in complex-shaped domains by aligning the
J. Croonen, L. Pezzini, F. Bacchini, G. Lapenta   +3 more
doaj   +1 more source