Results 51 to 60 of about 45,937 (210)
The Astrophysical JournalBoth observational evidence and theoretical considerations from magnetohydrodynamic simulations of jets suggest that the relativistic jets of active galactic nuclei (AGN) are radially stratified, with a fast inner spine surrounded by a slower-moving ...
Tej Chand, Markus Böttcher
doaj +1 more source
Countering FIMI by Digital Authoritarianisms: Audience Architecture and Reverse Language Engineering
Global Policy, EarlyView.ABSTRACT Foreign information manipulation and interference (FIMI) campaigns on social media are currently both more accessible and more impactful than the North Atlantic Treaty Organization's (NATO) or European Union's (EU), offering their opponents superiority and efficiency on those platforms.
Michelangelo Conoscenti
wiley +1 more source
The Highest Redshift Relativistic Jets
, 2007 5 pages, 2 figures, to appear in Extragalactic Jets: Theory and Observation from Radio to Gamma Ray, Eds. T.A. Rector and D.S.
Cheung, C.C. +7 more
openaire +3 more sources
Synchrotron Radiation Maps from Relativistic MHD Jet Simulations
Galaxies, 2017 Relativistic jets from active galactic nuclei (AGN) often display a non-uniform structure and are, under certain conditions, susceptible to a number of instabilities.
Dimitrios Millas +2 more
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Active Galactic Nuclei as Potential Sources of Ultra-High Energy Cosmic Rays
Universe, 2022 Active Galactic Nuclei (AGNs) and their relativistic jets belong to the most promising class of ultra-high-energy cosmic ray (UHECR) accelerators. This compact review summarises basic experimental findings by recent instruments, and discusses possible ...
Frank M. Rieger
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A Multidimensional Relativistic Hydrodynamics Code with a General Equation of State
, 2010 The ideal gas equation of state with a constant adiabatic index, although commonly used in relativistic hydrodynamics, is a poor approximation for most relativistic astrophysical flows.
Aloy +14 more
core +1 more source
A Theory of Leadership Meta‐Talk and the Talking‐Doing Gap
Journal of Management Studies, EarlyView.Abstract We identify managers' meta‐level talk about the positive purpose, meaning, and significance of their actions as an overlooked type of leadership behaviour and call it leadership meta‐talk. We outline why leadership meta‐talk is not necessarily truthful or deceptive, but selective and loosely coupled with leadership practice.
Thomas Fischer, Mats Alvesson
wiley +1 more source
Electron jets in toroidal self-generated magnetic fields of nonextensive laser-produced plasma
AIP AdvancesUnder the framework of nonextensive distribution, the modulation instabilities of annular self-generated magnetic fields and electron jets formed during laser-plasma interactions under both relativistic and non-relativistic conditions have been ...
Li Zhang, Zu Yang Zhao, Xiaolan Liu
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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 +5 more
wiley +1 more source
Radiation from relativistic jets [PDF]
Proceedings of Workshop on Blazar Variability across the Electromagnetic Spectrum — PoS(BLAZARS2008), 2009 Nonthermal radiation observed from astrophysical systems containing relativistic jets and shocks, e.g., gamma-ray bursts (GRBs), active galactic nuclei (AGNs), and Galactic microquasar systems usually have power-law emission spectra. Recent PIC simulations of relativistic electron-ion (electron-positron) jets injected into a stationary medium show that
Ken-Ichi Nishikawa, Y. Mizuno
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