Articles with "ring current" as a keyword



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Space Weather Effects Produced by the Ring Current Particles

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Published in 2017 at "Space Science Reviews"

DOI: 10.1007/s11214-017-0412-2

Abstract: One of the definitions of space weather describes it as the time-varying space environment that may be hazardous to technological systems in space and/or on the ground and/or endanger human health or life. The ring… read more here.

Keywords: produced ring; space; weather effects; ring current ... See more keywords

Diagnosing Ring Current(s) in Figure-Eight Skeletons: A 3D Through-Space Conjugation in the Two-Loops Crossing

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Published in 2022 at "Organic Letters"

DOI: 10.1021/acs.orglett.2c01625

Abstract: The macrocyclic structures with local conjugation readily undergo a redox-triggered change in the diatropic character, leading to a global current–density pathway of the doubly charged systems. The figure-eight geometry of the neutral dimer does not… read more here.

Keywords: current figure; figure eight; ring current; diagnosing ring ... See more keywords
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Global Aromaticity in a Partially Fused 8-Porphyrin Nanoring.

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Published in 2020 at "Journal of the American Chemical Society"

DOI: 10.1021/jacs.0c09973

Abstract: Template-directed synthesis has been used to prepare a fully π-conjugated cyclic porphyrin octamer, composed of both β,meso,β-edge-fused porphyrin tape units and butadiyne-linked porphyrins. The UV-vis-NIR spectra of this partially fused nanoring show that π-conjugation extends… read more here.

Keywords: aromaticity; oxidation; partially fused; fused porphyrin ... See more keywords

Statistical Properties of Molecular Ions in the Ring Current Observed by the Arase (ERG) Satellite

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Published in 2019 at "Geophysical Research Letters"

DOI: 10.1029/2019gl084163

Abstract: Molecular ions in the magnetosphere can be a tracer of fast ion outflows from the deep ionosphere. Statistical properties of molecular ions (O2+/NO+/N2+) in the ring current are investigated based on ion composition measurements ( read more here.

Keywords: molecular ions; ions ring; ring current; erg satellite ... See more keywords

Explicit IMF B y ‐Dependence of Energetic Protons and the Ring Current

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Published in 2022 at "Geophysical Research Letters"

DOI: 10.1029/2022gl098031

Abstract: The most important parameter driving the solar wind‐magnetosphere interaction is the southward (Bz) component of the interplanetary magnetic field (IMF). While the dawn‐dusk (By) component of the IMF is also known to play an important… read more here.

Keywords: ring current; dependence energetic; explicit imf; imf dependence ... See more keywords

Simulating the Ring Current Proton Dynamics in Response to Radial Diffusion by Ultra‐Low‐Frequency (ULF) Waves

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Published in 2024 at "Geophysical Research Letters"

DOI: 10.1029/2023gl107326

Abstract: Radial diffusion (RD) induced by ULF waves can contribute to particle acceleration and scattering. Past global simulations that incorporate RD often use dipole magnetic fields, which could not realistically reveal the role of RD. To… read more here.

Keywords: dynamics response; ring current; ulf waves; radial diffusion ... See more keywords

Reduced‐Order Probabilistic Emulation of Physics‐Based Ring Current Models: Application to RAM‐SCB Particle Flux

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Published in 2024 at "Space Weather"

DOI: 10.1029/2023sw003706

Abstract: In this work, we address the computational challenge of large‐scale physics‐based simulation models for the ring current. Reduced computational cost allows for significantly faster than real‐time forecasting, enhancing our ability to predict and respond to… read more here.

Keywords: particle flux; ring current; physics; ram scb ... See more keywords

The Distribution of Electromagnetic Power Density in the Ring Current Region

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Published in 2025 at "Geophysical Research Letters"

DOI: 10.1029/2024gl113702

Abstract: This study analyzes electromagnetic power density E⋅j $\mathbf{E}\cdot \mathbf{j}$ in the ring current region using MMS data and multi‐point analysis method. For the first time, we statistically examine the large‐scale distribution characteristics of E⋅j $\left\langle… read more here.

Keywords: mathbf; density; electromagnetic power; ring current ... See more keywords

Self‐Regulating Feedback Between Field Line Curvature Scattering, Ring Current Pressure, and Magnetic Configuration

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Published in 2025 at "Geophysical Research Letters"

DOI: 10.1029/2025gl118346

Abstract: We incorporate field line curvature (FLC) scattering into a kinetic ring current model two‐way coupled with a global magnetospheric MHD model to investigate its role in SYM‐H prediction and global magnetospheric dynamics. FLC scattering reduces… read more here.

Keywords: pressure; field; flc scattering; configuration ... See more keywords
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Observational evidence of ring current in the magnetosphere of Mercury

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Published in 2022 at "Nature Communications"

DOI: 10.1038/s41467-022-28521-3

Abstract: The magnetic gradient and curvature drift of energetic ions can form a longitudinal electric current around a planet known as the ring current, that has been observed in the intrinsic magnetospheres of Earth, Jupiter, and… read more here.

Keywords: observational evidence; ring current; mercury ring; mercury ... See more keywords
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The unprecedented strong paratropic ring current of a bis-PdII complex of 5,10,23-trimesityl [28]heptaphyrin(1.1.0.0.1.0.0)

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Published in 2024 at "Chemical Science"

DOI: 10.1039/d4sc01909a

Abstract: Acid-catalyzed Friedel–Crafts-type cyclization of tetrapyrrolic BF2 complex 1 and α,α′-dibromotripyrrin 2 gave 5,10,23-trimesityl [28]heptaphyrin(1.1.0.0.1.0.0) BF2 complex 3BF2 as a stable and moderate antiaromatic macrocycle. Demetalation of 3BF2 with methanesulfonic acid followed by treatment with HCl… read more here.

Keywords: trimesityl heptaphyrin; paratropic ring; pdii complex; bis pdii ... See more keywords