Results 81 to 90 of about 1,150,056 (199)

Intermingled Open and Closed Magnetic Field Lines near the Radial Origin of the Heliospheric Current Sheet

open access: yesThe Astrophysical Journal Letters
On 2024 March 30, the Parker Solar Probe crossed the heliospheric current sheet at 13 solar radii while encountering two distinctly different regions at sharp boundaries on several occasions.
F. S. Mozer   +5 more
doaj   +1 more source

Characterization of Small Flux Ropes Using Juno Spacecraft Cruise-phase Data

open access: yesThe Astrophysical Journal
In this study, we utilize magnetic field data from the Juno mission’s cruise phase to visually identify and analyze 338 interplanetary small flux ropes (SFRs) across a heliocentric distance range of 1–5.5 au.
Sahanaj A. Banu   +7 more
doaj   +1 more source

Interplanetary Magnetic Field Curvature and Its Role in Particle Acceleration: Magnetospheric Multiscale and Solar Orbiter Observations

open access: yesThe Astrophysical Journal
The curvature of the magnetic field plays a crucial role in magnetic confinement, magnetic reconnection, particle heating, and acceleration. Though the magnetic field curvature has been sufficiently investigated in the terrestrial magnetosheath, there is
D. K. Hu   +4 more
doaj   +1 more source

Exploring the Small-scale Magnetic Fields of the Solar Analog KIC 8006161 Using Asteroseismology

open access: yesThe Astrophysical Journal
The magnetic field is a significant and universal physical phenomenon in modern astrophysics. Small-scale magnetic fields are very important in the stellar atmosphere. They are ubiquitous and strongly couple with acoustic waves. Therefore, their presence
Guifang Lin   +4 more
doaj   +1 more source

Magnetic Structure of Sunspots

open access: yesLiving Reviews in Solar Physics, 2011
In this review we give an overview about the current state-of-knowledge of the magnetic field in sunspots from an observational point of view. We start by offering a brief description of tools that are most commonly employed to infer the magnetic field ...
Juan M. Borrero, Kiyoshi Ichimoto
doaj  

Analysis of Enceladus’s Time-variable Space Environment to Magnetically Sound its Interior

open access: yesThe Planetary Science Journal
We provide a comprehensive study of Enceladus’s time-variable magnetic field environment and identify in measurements of the Cassini spacecraft signatures that appear to be consistent with induced fields from the moon’s interior.
Joachim Saur   +3 more
doaj   +1 more source

Can the Dynamo of Spiral-arm Galaxies Be Explained by Anisotropic Conductivity?

open access: yesThe Astrophysical Journal
The possibility of generating a magnetic field by a dynamo effect with anisotropic electrical conductivity rather than turbulent flow has been demonstrated theoretically and experimentally.
Paul Gomez   +2 more
doaj   +1 more source

Energy Bounds from Relative Magnetic Helicity in Spherical Shells

open access: yesThe Astrophysical Journal
Relative magnetic helicity is commonly used in solar physics to avoid the well-known gauge ambiguity of standard magnetic helicity in magnetically open domains.
Anthony R. Yeates, Gunnar Hornig
doaj   +1 more source

Helicity Effect on Turbulent Passive and Active Scalar Diffusivities

open access: yesThe Astrophysical Journal
Turbulent flows are known to produce enhanced effective magnetic and passive scalar diffusivities, which can fairly accurately be determined with numerical methods.
Axel Brandenburg   +3 more
doaj   +1 more source

Simultaneous Proton and Electron Energization during Macroscale Magnetic Reconnection

open access: yesThe Astrophysical Journal
The results of simulations of magnetic reconnection accompanied by electron and proton heating and energization in a macroscale system are presented. Both species form extended power-law distributions that extend nearly three decades in energy.
Zhiyu Yin, J. F. Drake, M. Swisdak
doaj   +1 more source

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