Results 91 to 100 of about 88,144 (207)

High-Energy Astrophysics in the 2020s and Beyond [PDF]

, 2019
With each passing decade, we gain new appreciation for the dynamic, connected, and often violent nature of the Universe. This reality necessarily places the study of high-energy processes at the very heart of modern astrophysics.
Arnaud, Keith, Brandt, Niel, Brenneman, Laura, Corcoran, Michael, Cornish, Neil, Gonzales, Gabriela, Lopez, Laura, Madsen, Kristin, Petre, Robert, Reynolds, Christopher   +9 more
core   +1 more source

Inter‐Solar‐Cycle Variability of Extreme Geomagnetic Storms

Space Weather, Volume 23, Issue 11, November 2025.
Abstract The occurrence of extreme space weather events, and, in particular, severe geomagnetic storms, while rare, can result in disproportionately large societal consequences. Accurate estimates of their likelihood over the timescale of a solar cycle or longer can provide crucial and actionable information for policymakers.
Pete Riley, M. Ben‐Nun
wiley   +1 more source

Ion Composition and Electron Pitch Angle Variations for Interchange Events in Jupiter's Inner Magnetosphere

Geophysical Research Letters, Volume 52, Issue 20, 28 October 2025.
Abstract The outward transport of plasma and magnetic fluxes in the gas giant magnetospheres is balanced with a return flow of flux tubes emptied through magnetic reconnection. Evidence of interchange motions between inward and outward moving flux tubes have long been reported around Jupiter and Saturn.
M. Devinat, N. André, G. Vinci, M. Blanc, J. R. Szalay, Z.‐Y. Liu, Q. Nénon, E. Penou, P. Louarn, F. Allegrini, R. W. Ebert, P. W. Valek, F. Bagenal, R. J. Wilson, J.‐Z. Wang, W. S. Kurth, B. H. Mauk, Y. Wang, G. A. DiBraccio, J. E. P. Connerney, S. J. Bolton   +20 more
wiley   +1 more source

Clustering with phylogenetic tools in astrophysics

, 2015
Phylogenetic approaches are finding more and more applications outside the field of biology. Astrophysics is no exception since an overwhelming amount of multivariate data has appeared in the last twenty years or so. In particular, the diversification of
Fraix-Burnet, Didier
core   +1 more source

Electromagnetic Ion Cyclotron Waves in a Magnetic Reconnection Exhaust at Earth's Magnetopause

Geophysical Research Letters, Volume 52, Issue 20, 28 October 2025.
Abstract Plasma waves can initiate, regulate, or reflect magnetic reconnection efficiently converting magnetic energy into plasma energy. While waves ranging from below the ion cyclotron frequency to above the electron plasma frequency are commonly observed near reconnection sites, electromagnetic ion cyclotron (EMIC) waves—frequent in other plasma ...
Zewen Chen, Zhenpeng Su, Zhiyong Wu, Lei Dai, Tianran Sun, Binbin Tang, San Lu, Zhaoguo He, Huinan Zheng, Yuming Wang   +9 more
wiley   +1 more source

Observation of a Knotted Electron Diffusion Region in Earth's Magnetotail Reconnection

Geophysical Research Letters, Volume 52, Issue 20, 28 October 2025.
Abstract Magnetic reconnection is a fundamental plasma process that alters the magnetic field topology and releases magnetic energy. Most numerical simulations and spacecraft observations assume a two‐dimensional diffusion region, with the electron diffusion region (EDR) embedded in the same plane as the ion diffusion region (IDR) and a uniform guide ...
Xinmin Li, Chuanfei Dong, Hantao Ji, Chi Zhang, Liang Wang, Barbara Giles, Hongyang Zhou, Rui Chen, Yi Qi   +8 more
wiley   +1 more source

Linking Very Near‐Earth Reconnection (VNERX) to Mid‐Latitude GICs: Evidence From the 7 September 2017 Storm

Geophysical Research Letters, Volume 52, Issue 20, 28 October 2025.
Abstract Geomagnetically Induced Currents (GICs) are a hazard to power systems. In this letter, we present a case study to understand why a Sudden‐Commencement‐associated 20A GIC spike, measured at mid‐latitude in Virginia, US, increased to 30A within 2 min of interplanetary shock arrival.
Bhagyashree Waghule, Delores J. Knipp, Grant K. Stephens, David M. Malaspina   +3 more
wiley   +1 more source

Linear astrophysical dynamos in rotating spheres Differential rotation, anisotropic turbulent magnetic diffusivity, and solar-stellar cycle magnetic parity

The Astrophysical Journal, 1984
Z. Wang, H. Yoshimura, F. Wu
openaire   +2 more sources

Linear Astrophysical Dynamos in Rotating Spheres - Solar and Stellar Cycle North-South Hemispheric Parity Selection Mechanism and Turbulent Magnetic Diffusivity

The Astrophysical Journal, 1984
F. Wu, H. Yoshimura, Z. Z. Wang
openaire   +2 more sources

The ²²Ne( α ,n)²⁵Mg reaction - state of the art, astrophysics, and perspectives. [PDF]

Eur Phys J A Hadron Nucl
Best A, Adsley P, Amberger R, Battino U, Chillery T, La Cognata M, deBoer RJ, Mercogliano D, Ota S, Rapagnani D, Sidhu RS, Spartà R, Tumino A, Wiescher M.   +13 more
europepmc   +1 more source