Results 41 to 50 of about 1,495,918 (202)
Meteoritics &Planetary Science, EarlyView.Abstract In the search for life on Mars, understanding the origin of preserved organics is critical. Expected sources include exogenous delivery, endogenous synthesis, and potentially life. Environmental processing by ultraviolet (UV) irradiation can alter these organics, obscuring hallmarks of their origin. To deconvolve these effects, we conducted an
D. K. Buckner +7 more
wiley +1 more source
Time distributions of solar energetic particle events: Are SEPEs really random?
, 2009 Solar energetic particle events (SEPEs) can exhibit flux increases of several orders of magnitude over background levels and have always been considered to be random innature in statistical models with no dependence of any one event on the occurrence of ...
Jiggens, P.T.A., Gabriel, S.B.
core +1 more source
Three-stage Acceleration of Solar Energetic Particles Detected by Parker Solar Probe
The Astrophysical Journal LettersCoronal mass ejections (CMEs) drive powerful shocks and thereby accelerate solar energetic particles (SEPs) as they propagate from the corona into interplanetary space.
Xiaomin Chen, Chuan Li
doaj +1 more source
Magnetic-reconnection-driven Turbulence and Turbulent Reconnection Acceleration
The Astrophysical Journal, 2023 This paper employs an MHD-PIC method to perform numerical simulations of magnetic-reconnection-driven turbulence and turbulent reconnection acceleration of particles.
Shi-Min Liang +3 more
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Journal of Field Robotics, Volume 43, Issue 7, Page 4475-4514, October 2026.ABSTRACT As a crucial puzzle piece of deep space exploration, exploring small bodies can provide significant scientific insights and valuable mineral resources. Unlike missions to the Moon and Mars, small‐body missions pose distinct technical challenges, including communication delays, weak gravity, and uncertain environments. This paper reviews a full
Xin Zhang +3 more
wiley +1 more source
Topics in Energy Release and Particle Acceleration in the Heliosphere [PDF]
, 2014 This thesis investigates both the release of energy in solar flares, and the acceleration and transport of particles in various astrophysical situations.
Armstrong, Craig Keith
core
Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.Abstract Along with magnetic reconnection, Kelvin‐Helmholtz (KH) waves are the main mechanisms controlling the solar wind‐magnetosphere interaction, enabling plasma transport into the magnetosphere due to secondary reconnection, diffusion and wave‐particle interactions.
L. Holappa +3 more
wiley +1 more source
Particle acceleration in the presence of weak turbulence at an X-type neutral point [PDF]
, 2012 We simulate the likely noisy situation near a reconnection region by superposing many 2D linear reconnection eigenmodes. The superposition of modes on the steady state X-type magnetic field creates multiple X- and O-type neutral points close to the ...
Petkaki, P. +4 more
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Oxygen Pickup Acceleration in the Plasma Mantle Associated With Traveling Flux‐Rope Structures
Geophysical Research Letters, Volume 53, Issue 18, 28 September 2026.Abstract It is well known that, in the high‐altitude cusp and mantle regions, ionospheric‐origin outflowing oxygen (O+) ions are often energized through non‐adiabatic processes, among which cyclotron resonance is considered a major mechanism. Here, based on Cluster observations, we present evidence that pickup acceleration also operates as a non ...
H. Koike +4 more
wiley +1 more source
Adaptive particle swarm optimization [PDF]
, 2009 An adaptive particle swarm optimization (APSO) that features better search efficiency than classical particle swarm optimization (PSO) is presented. More importantly, it can perform a global search over the entire search space with faster convergence ...
Zhan, Z-H. +3 more
core +1 more source