Results 61 to 70 of about 2,400 (232)

The Hydrodynamic Thermal Continuum, with Applications to Stratified Atmospheres and 1D Coronal Loop Models

The Astrophysical Journal
Using both analytical and numerical means, we demonstrate that linear stability analysis of a hydrodynamic stratified atmosphere or a 1D coronal loop model in nonadiabatic settings features a thermal continuum corresponding to highly localized ...
Rony Keppens, Jordi De Jonghe, Adrian Kelly, Nicolas Brughmans, Hans Goedbloed   +4 more
doaj   +1 more source

Contemporaneous Appearances of Auroral Spiral and Transpolar Arc: Polar UVI Observations and Global MHD Simulations

Earth and Space Science, Volume 13, Issue 6, June 2026.
Abstract A local vortex‐structured aurora and a large‐scale transpolar arc (TPA) were contemporaneously observed by the Polar ultraviolet imager (UVI) during the late recovery phase of a substorm, and the interplanetary magnetic field (IMF) BY and BZ were negative and negative‐to‐positive. The TPA grew along the dawnside auroral oval from the nightside
Motoharu Nowada, Yukinaga Miyashita, Aoi Nakamizo, Noora Partamies, Quan‐Qi Shi   +4 more
wiley   +1 more source

Integrating Olivine Diffusion Chronometry With Monitoring Data to Decipher the Magma Dynamics at the Submarine Fani Maoré Volcano

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 6, June 2026.
Abstract Monitoring data are critical for understanding volcanic unrest and eruption, but they often lack the ability to constrain the pre‐eruptive magma processes. As such, an increasing number of studies couple monitoring data with petrological tools to obtain insights into the causes and durations of magmatic processes. The 2018–2020 eruption of the
Karoline Brückel, Etienne Médard, Fidel Costa, Carole Berthod, Pauline Verdurme, Patrick Bachèlery, Lise Retailleau, Jean‐Christophe Komorowski, Lucia Gurioli   +8 more
wiley   +1 more source

Anisotropic Particle Acceleration in Alfvénic Turbulence

The Astrophysical Journal
Alfvénic turbulence is an effective mechanism for particle acceleration in strongly magnetized, relativistic plasma. In this study, we investigate a scenario where turbulent plasma is influenced by a strong guide magnetic field, resulting in highly ...
Cristian Vega, Stanislav Boldyrev, Vadim Roytershteyn   +2 more
doaj   +1 more source

Geochemical Constraints on Spatial‐Temporal Distribution and Origin of Anomalous Mantle in the Western Pacific Basins

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 6, June 2026.
Abstract Seafloor basalt samples recovered from the Caroline Basin (CB), the Parece Vela Basin (PVB), and the Western Philippine Sea Plate (WPSP) are analyzed for whole‐rock major and trace elements (including H2O), Sr‐Nd‐Pb‐Hf isotopes and 40Ar‐39Ar age‐dating.
Guo‐Liang Zhang, Han‐Tao Chi, Ji Zhang, Feng Xu   +3 more
wiley   +1 more source

Modeling multiphase plasma in the corona: prominences and rain

Living Reviews in Solar Physics
We review major achievements in our understanding of multiphase coronal plasma, where cool-dense and hot-tenuous matter coexists, brought about by advances in modeling and theory, inspired by observations.
Rony Keppens, Yuhao Zhou, Chun Xia
doaj   +1 more source

Extreme Plasma Astrophysics

, 2019
This is a science white paper submitted to the Astro-2020 and Plasma-2020 Decadal Surveys. The paper describes the present status and emerging opportunities in Extreme Plasma Astrophysics -- a study of astrophysically-relevant plasma processes taking place under extreme conditions that necessitate taking into account relativistic, radiation, and QED ...
Uzdensky, D, Begelman, M, Beloborodov, A, Blandford, R, Boldyrev, S, Cerutti, B, Fiuza, F, Giannios, D, Grismayer, T, Kunz, M, Loureiro, N, Lyutikov, M, Medvedev, M, Petropoulou, M, Philippov, A, Quataert, E, Schekochihin, A, Schoeffler, K, Silva, L, Sironi, L, Spitkovsky, A, Werner, G, Zhdankin, V, Zrake, J, Zweibel, E   +24 more
openaire   +3 more sources

Geochemical and Isotopic Constraints on Long‐Lived Source Enrichment and Mantle Evolution in Paleoproterozoic Cratonic Lamprophyres

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 6, June 2026.
Abstract The cratonic lithospheric mantle records complex metasomatic processes and is frequently tapped by alkaline magmatism, offering a unique opportunity to trace the progressive evolution of the mantle. In the present contribution, we investigate a newly identified calc‐alkaline lamprophyre field from the Neoarchean Jonnagiri Schist Belt, Eastern ...
Sourav Naskar, Rohit Pandey, Nils Björn Baumann, N. V. Chalapathi Rao, George Mathew, J. Amal Dev, J. K. Tomson   +6 more
wiley   +1 more source

Dynamics, thermodynamics, and fine structure of virtual erupting filaments

Astronomy & Astrophysics
Context. It is not fully understood why some solar filaments erupt, whereas others do not. Filaments that erupt typically undergo a slow rise, followed by an acceleration phase; this transition requires further investigation.
Donné D., Zhou Y., Cremades H., Keppens R.   +3 more
doaj   +1 more source

Why LA‐ICPMS Fission‐Track Age Data Are So Dispersed? A Pseudo‐EDM Solution

Geochemistry, Geophysics, Geosystems, Volume 27, Issue 6, June 2026.
Abstract Fission track (FT) dating is a well‐established thermochronological technique widely used to reconstruct rocks' thermal histories. Over the past two decades, development of Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA‐ICPMS) has significantly advanced the application of FT dating by enabling rapid measurements of uranium ...
Yuntao Tian, Huixia Zhong
wiley   +1 more source