Results 121 to 130 of about 624,739 (259)

Quasilinear Wave‐Particle Analysis in the Source Region of Jovian Kilometric Radio Emission

Journal of Geophysical Research: Space Physics, Volume 130, Issue 11, November 2025.
Abstract Jovian broadband kilometric emission (bKOM) is observed by the Juno spacecraft within a source region in the northern hemisphere near the equatorward edge of the auroral oval. A well‐developed upward loss cone is the free‐energy source of the bKOM.
P. H. Yoon, J. D. Menietti, F. Allegrini, W. S. Kurth, J. B. Faden, G. B. Hospodarsky, J. E. P. Connerney, S. J. Bolton   +7 more
wiley   +1 more source

Synchrotron-limited Particle Acceleration in Relativistic Shearing Flows

The Astrophysical Journal
Fermi-type shear particle acceleration is a promising mechanism for sustaining ultrarelativistic particles along the kiloparsec scale jets in active galactic nuclei.
Frank M. Rieger, Peter Duffy
doaj   +1 more source

Knots in Relativistic Transverse Stratified Jets

Galaxies, 2017
We investigate the plasmoid knot formation in stratified relativistic jet by means of relativistic magneto-hydrodynamics simulations. Indeed, astrophysical jets in active galactic nuclei (AGN) seem to be transversely stratified, with a fast inner jet and
Zakaria Meliani, Olivier Hervet
doaj   +1 more source

The relativistic equation of motion in turbulent jets

, 2009
The turbulent jets are usually described by classical velocities. The relativistic case can be treated starting from the conservation of the relativistic momentum.
Zaninetti, Lorenzo
core  

Determining the optimal locations for shock acceleration in magnetohydrodynamical jets

, 2010
Observations of relativistic jets from black holes systems suggest that particle acceleration often occurs at fixed locations within the flow. These sites could be associated with critical points that allow the formation of standing shock regions, such ...
Bell, Blandford, Blandford, Corbel, David L. Meier, Drury, Fender, Markoff, Migliari, Nowak, Peter Polko, Sera Markoff, Vlahakis, Walker   +13 more
core   +1 more source

Solar Wind and Geomagnetic Conditions That Lead to the Largest Relativistic Electron Fluxes in GPS Orbit

Space Weather, Volume 23, Issue 11, November 2025.
Abstract Relativistic electrons are an important space weather hazard, being a major source of radiation damage to satellites and posing a risk to humans in space. We use approximately 20 years of data from the US Global Positioning System (GPS) satellite NS41 to determine the characteristics of the geomagnetic storms that lead to the largest ...
Nigel P. Meredith, Jacob Bortnik, Man Hua, Thomas E. Cayton, Mark A. Clilverd, Tom A. Daggitt, Kaine A. Bunting   +6 more
wiley   +1 more source

Ray-tracing in relativistic jet simulations: A polarimetric study of magnetic field morphology and electron scaling relations [PDF]

, 2021
Joana A. Kramer, Nicholas R. MacDonald
openalex   +1 more source

Interpolating Electron Diffusion Coefficients in Earth's Radiation Belts: A Neural Network Model Inspired by Video Frame Interpolation

Space Weather, Volume 23, Issue 11, November 2025.
Abstract Many numerical models have been built to uncover the physical mechanisms governing radiation belt dynamics and enable real‐time forecasting. The diffusion coefficient, as a critical input for these models, is usually obtained through linear interpolation from precomputed diffusion coefficient libraries.
Jianhang Wang, Zheng Xiang, Binbin Ni, Junhu Dong, Yangxizi Liu, Jingle Hu, Haozhi Guo, Jiakun Dai   +7 more
wiley   +1 more source

A Simulation Study of Low-power Relativistic Jets: Flow Dynamics and Radio Morphology of FR-I Jets

The Astrophysical Journal
Radio galaxies are classified into two primary categories based on their morphology: center-brightened FR-I and edge-brightened FR-II. It is believed that the jet power and interactions with the ambient medium govern the deceleration and decollimation of
Ayan Bhattacharjee, Jeongbhin Seo, Dongsu Ryu, Hyesung Kang   +3 more
doaj   +1 more source

Relativistic Jets: Open Problems and Challenges

, 2010
Outstanding questions in the study of relativistic jets in their various astrophysical settings are discussed in the context of a general dynamical model.Comment: 12 pages, to appear in proceedings of workshop on High Energy Phenomena in Relativistic ...
Königl, Arieh
core   +1 more source