Results 31 to 40 of about 345,959 (285)
Non linear particle acceleration at non-relativistic shock waves in the presence of self-generated turbulence [PDF]
, 2006 Particle acceleration at astrophysical shocks may be very efficient if magnetic scattering is self-generated by the same particles. This nonlinear process adds to the nonlinear modification of the shock due to the dynamical reaction of the accelerated ...
Amato +39 more
core +2 more sources
Particle Injection and Nonthermal Particle Acceleration in Relativistic Magnetic Reconnection
The Astrophysical Journal, 2023 Magnetic reconnection in the relativistic regime has been proposed as an important process for the efficient production of nonthermal particles and high-energy emission. Using fully kinetic particle-in-cell simulations, we investigate how the guide-field
Omar French +3 more
doaj +1 more source
Case Studies in Thermal Engineering, 2021 The graphite particle dispersion characteristics with irregular shapes of dense gas-solid turbulent flow in downer reactor is numerically investigated using an improved kinetic friction stress model and a adopted drag coefficient describing momentum ...
Yang Liu +3 more
doaj +1 more source
Persistent accelerations disentangle Lagrangian turbulence
, 2019 Particles in turbulence frequently encounter extreme accelerations between extended periods of quiescence. The occurrence of extreme events is closely related to the intermittent spatial distribution of intense flow structures such as vorticity filaments.
Bentkamp, Lukas +2 more
core +1 more source
A Multi-Event Study of Early-Stage SEP Acceleration by CME-Driven Shocks—Sun to 1 AU
Frontiers in Astronomy and Space Sciences, 2022 The solar corona between below 10 solar radii is an important region for early acceleration and transport of solar energetic particles (SEPs) by coronal mass ejection-driven shock waves.
Kamen Kozarev +4 more
doaj +1 more source
, 2017 The origin of the extended X-ray emission in the large-scale jets of active galactic nuclei (AGNs) poses challenges to conventional models of acceleration and emission. Although the electron synchrotron radiation is considered the most feasible radiation
Aharonian, F. A. +2 more
core +1 more source
Particle resonances and trapping of direct laser acceleration in a laser-plasma channel
Physical Review Accelerators and Beams, 2021 As one of the leading acceleration mechanisms in laser-driven underdense plasmas, direct laser acceleration (DLA) is capable of producing high-energy-density electron beams in a plasma channel for many applications.
F.-Y. Li +3 more
doaj +1 more source
Relativistic Shocks: Particle Acceleration and Magnetization
, 2015 We review the physics of relativistic shocks, which are often invoked as the sources of non-thermal particles in pulsar wind nebulae (PWNe), gamma-ray bursts (GRBs), and active galactic nuclei (AGN) jets, and as possible sources of ultra-high energy ...
Keshet, Uri +2 more
core +3 more sources
Cosmic ray diffusive acceleration at shock waves with finite upstream and downstream escape boundaries [PDF]
, 1996 In the present paper we discuss the modifications introduced into the first-order Fermi shock acceleration process due to a finite extent of diffusive regions near the shock or due to boundary conditions leading to an increased particle escape upstream ...
E. G. Berezhko +9 more
core +2 more sources
Mapping the evolution of mitochondrial complex I through structural variation
FEBS Letters, EarlyView.Respiratory complex I (CI) is crucial for bioenergetic metabolism in many prokaryotes and eukaryotes. It is composed of a conserved set of core subunits and additional accessory subunits that vary depending on the organism. Here, we categorize CI subunits from available structures to map the evolution of CI across eukaryotes. Respiratory complex I (CI)
Dong‐Woo Shin +2 more
wiley +1 more source