Results 1 to 10 of about 42,282 (274)

Reconnection in a pinch

Frontiers in Astronomy and Space Sciences, 2023
A recently published analysis of current sheets has updated the classic Harris 1D static solution by considering multiple classes of charged particle trajectories in a generalized and dynamic current sheet. It uses a 1D PIC simulation to describe dynamic
T. E. Moore, T. E. Moore, J. L. Burch, D. E. Wendel   +3 more
doaj   +3 more sources

Magnetosphere-Ionosphere Coupling: Implications of Non-Equilibrium Conditions

Frontiers in Astronomy and Space Sciences, 2022
The response times of the coupled magnetosphere-ionosphere-thermosphere system are, on average, greater than the autocorrelation timescales of solar wind forcing. This means that the system is rarely, if ever, in equilibrium.
Mike Lockwood, Stan W. H. Cowley
doaj   +1 more source

A Review of Studies of Geomagnetic Storms and Auroral/Magnetospheric Substorms Based on the Electric Current Approach

Frontiers in Astronomy and Space Sciences, 2021
The progress of space physics is reviewed from my personal point of view, particularly how I have reached my present understanding of auroral substorms and geomagnetic storms from the time of the earliest days of space physics.
Syun-Ichi Akasofu
doaj   +1 more source

Effects from dayside magnetosphere to distant tail unleashed by a bifurcated, non-reconnecting interplanetary current sheet

Frontiers in Physics, 2022
Global magnetospheric effects resulting from the passage at Earth of large-scale structures have been well studied. The effects of common and short-term features, such as discontinuities and current sheets (CSs), have not been studied in the same depth ...
C. J. Farrugia, N. Lugaz, S. Wing, L. B. Wilson, D. J. Sibeck, S. W. H. Cowley, R. B. Torbert, B. J. Vasquez, J. Berchem   +8 more
doaj   +1 more source

Further investigation of the effect of upstream solar-wind fluctuations on solar-wind/magnetosphere coupling: Is the effect real?

Frontiers in Astronomy and Space Sciences, 2023
There is a general consensus that fluctuations in the solar wind magnetic field and/or the Alfvenicity of the solar wind drive a solar wind-magnetosphere interaction.
Joseph E. Borovsky
doaj   +1 more source

Modeling the Effect of Enhanced Lateral Connectivity on Nutrient Retention Capacity in Large River Floodplains: How Much Connected Floodplain Do We Need?

Frontiers in Environmental Science, 2020
Floodplains have been degraded in Central Europe for centuries, resulting in less dynamic and less diverse ecosystems than in the past. They provide essential ecosystem services like nutrient retention to improve overall water quality and thus fulfill ...
Stephanie Natho, Martin Tschikof, Martin Tschikof, Elisabeth Bondar-Kunze, Elisabeth Bondar-Kunze, Thomas Hein, Thomas Hein   +6 more
doaj   +1 more source

Topside Reconnection

Frontiers in Physics, 2020
It is proposed that reconnection would be a main mechanism governing the plasma processes on auroral time scales in the topside ionosphere/high-latitude magnetosphere transition.
R. A. Treumann, R. A. Treumann, W. Baumjohann   +2 more
doaj   +1 more source

The low acute effectiveness of a high-power short duration radiofrequency current application technique in pulmonary vein isolation for atrial fibrillation

Cardiology Journal, 2021
BACKGROUND: Application of high power radiofrequency (RF) energy for a short duration (HPSD) to isolate pulmonary vein (PV) is an emerging technique. But power and duration settings are very different across different centers.
Ekrem Ücer, Carsten Jungbauer, Christian Hauck, Manuel Kaufmann, Florian Poschenrieder, Lars Maier, Sabine Fredersdorf   +6 more
doaj   +1 more source

Eruption and Interplanetary Evolution of a Stealthy Streamer-Blowout CME Observed by PSP at ∼0.5 AU

Frontiers in Astronomy and Space Sciences, 2022
Streamer-blowout coronal mass ejections (SBO-CMEs) are the dominant CME population during solar minimum. Although they are typically slow and lack clear low-coronal signatures, they can cause geomagnetic storms.
Sanchita Pal, Benjamin J. Lynch, Simon W. Good, Erika Palmerio, Eleanna Asvestari, Jens Pomoell, Michael L. Stevens, Emilia K. J. Kilpua   +7 more
doaj   +1 more source

Kelvin-Helmholtz Instability Associated With Reconnection and Ultra Low Frequency Waves at the Ground: A Case Study

Frontiers in Physics, 2021
The Kelvin-Helmholtz instability (KHI) and its effects relating to the transfer of energy and mass from the solar wind into the magnetosphere remain an important focus of magnetospheric physics.
E. A. Kronberg, J. Gorman, J. Gorman, J. Gorman, K. Nykyri, A. G. Smirnov, A. G. Smirnov, A. G. Smirnov, J. W. Gjerloev, J. W. Gjerloev, E. E. Grigorenko, E. E. Grigorenko, L. V. Kozak, L. V. Kozak, X. Ma, K. J. Trattner, M. Friel   +16 more
doaj   +1 more source