Results 81 to 90 of about 384,338 (204)

Reliability of astrophysical jet simulations in 2D [PDF]

, 2001
M. Krause, M. Camenzind
openalex   +2 more sources

Study of High Energy Emission from Relativistic Jets with VERITAS

EPJ Web of Conferences, 2013
VERITAS is an imaging atmospheric Cherenkov telescope array carrying out observations of the gamma-ray sky at energies above 100 GeV. Located in southern Arizona, VERITAS consists of an array of four telescopes, and carries out a comprehensive observing ...
Mukherjee R.
doaj   +1 more source

Two-Temperature Magnetohydrodynamics Simulations of Propagation of Semi-Relativistic Jets

Galaxies, 2019
In astrophysical jets observed in active galactic nuclei and in microquasars, the energy exchange rate by Coulomb collision is insufficient for thermal equilibrium between ions and electrons.
Takumi Ohmura, Mami Machida, Kenji Nakamura, Yuki Kudoh, Yuta Asahina, Ryoji Matsumoto   +5 more
doaj   +1 more source

Spacecraft Discharge Time Constants Determined From Electron‐Flux Suppression During Sounding‐Radar Operation at Mars

Journal of Geophysical Research: Space Physics, Volume 130, Issue 4, April 2025.
Abstract Spacecraft discharge time constants are calculated from measurements of electron differential flux before and during operation of an ionospheric sounding radar. Determining these time constants provides insight into how the operation of a sounding radar affects the surrounding plasma's interaction with the spacecraft.
Sebastián Rojas Mata, Stas Barabash, Andrii Voshchepynets, Mats Holmström, Beatriz Sánchez‐Cano, Mark Lester, Andrea Cicchetti, Roberto Orosei   +7 more
wiley   +1 more source

Lightning‐Induced Electron Precipitation Events Observed at Low Altitudes

Journal of Geophysical Research: Space Physics, Volume 130, Issue 4, April 2025.
Abstract Lightning‐induced electron precipitation (LEP) events are important phenomena in the Earth's inner magnetosphere, where atmospheric lightning strokes cause energetic electron loss from the radiation belts. Lightning strokes generate electromagnetic waves that penetrate the ionosphere and propagate through the Earth's magnetosphere as so‐called
V. Linzmayer, F. Němec, O. Santolík, I. Kolmašová   +3 more
wiley   +1 more source

The gluon condensation at high energy hadron collisions

Nuclear Physics B, 2017
We report that the saturation/CGC model of gluon distribution is unstable under action of the chaotic solution in a nonlinear QCD evolution equation, and it evolves to the distribution with a sharp peak at the critical momentum.
Wei Zhu, Jiangshan Lan
doaj   +1 more source

Statistical Investigation of Deformation of Electron Pitch Angle Distributions Associated With Chorus Waves Observed by the Arase Satellite

Journal of Geophysical Research: Space Physics, Volume 130, Issue 4, April 2025.
Abstract Whistler‐mode chorus waves play important roles in the development of energetic electron populations in the Earth's inner magnetosphere. We have statistically analyzed rapid changes in the electron flux associated with chorus waves using data from the Arase satellite.
S. Tokuda, T. Zushi, S. Kurita, H. Kojima, S. Kasahara, S. Yokota, K. Keika, T. Hori, Y. Kasahara, S. Matsuda, A. Matsuoka, M. Teramoto, K. Yamamoto, Y. Miyoshi, I. Shinohara   +14 more
wiley   +1 more source

Multispectral Properties of Rocks in Marker Band Valley and Evidence for an Alteration Unit Below the Amapari Marker Band at Gale Crater, Mars

Journal of Geophysical Research: Planets, Volume 130, Issue 4, April 2025.
Abstract The Mars Science Laboratory rover, Curiosity, has been examining strata from a period of Martian history where extensive clay mineral formation transitioned to sulfate mineral formation. This mineralogic change corresponds to a change from a wetter to a more arid climate.
W. H. Farrand, A. M. Eng, A. R. Trussell, J. R. Johnson, J. F. Bell III, S. G. Banham, A. L. Roberts, L. M. Thompson, E. B. Rampe, C. J. Hardgrove, C. M. Fedo, A. A. Fraeman, C. M. Weitz   +12 more
wiley   +1 more source

Crater Structure Behind Reconnection Front

Geophysical Research Letters
Magnetic reconnection is the physical process that converts the energy from the fields to the plasmas in space, astrophysical and laboratory plasmas.
S. Y. Huang, Q. Y. Xiong, Z. G. Yuan, K. Jiang, L. Yu, S. B. Xu, R. T. Lin   +6 more
doaj   +1 more source

Helium in Mercury's Extended Exosphere Determined by Pick‐Up Generated Ion Cyclotron Waves

Journal of Geophysical Research: Planets, Volume 130, Issue 4, April 2025.
Abstract Helium (He) was first detected by remote spectroscopic observations of the Ultraviolet Visible Spectrometers (UVVS) instrument in Mercury's exosphere during the three Mariner 10 flybys in 1974 and 1975. Here, we derive the first in situ radial density profile of He in Mercury's extended exosphere by analyzing magnetic field and plasma ...
F. Weichbold, H. Lammer, D. Schmid, M. Volwerk, J. Hener, A. Varsani, A. Vorburger, P. Wurz, C. Simon‐Wedlund   +8 more
wiley   +1 more source