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Related Articles from SNS
Particle Detection Using Magnetic Avalanches in Single-Molecule Magnet Crystals
Announce Type: replace-cross Abstract: The detection of a single quantum of energy with high efficiency and a low false positive rate is of considerable scientific interest, from serving as single quantum sensors of optical and infra-red photons to enabling the direct detection of low-mass dark matter. We confirm our initial experimental demonstration of magnetic avalanches induced by scattering of quanta in single-molecule magnet (SMM) crystals made of Mn$_{12}$-acetate, establishing the...
A tunable feedback-controlled magnetic trap for a magnet in free fall
arXiv:2606.01056v1 Announce Type: new Abstract: Ferromagnets in free space are predicted to exhibit pure Larmor precession at near-zero magnetic fields and provide exceptional sensitivity for magnetometry and gyroscopy. Notably, pure Larmor precession has not been observed in a macroscopic ferromagnetic particle, despite its fundamental importance and potential for probing relativistic effects and dark-matter interactions.
High-Load-Density Electro-Permanent Magnetic Foot with Controllable Adhesion for Quadruped Wall-Climbing Robots
Announce Type: new Abstract: To enable reliable climbing locomotion of quadruped robots on ferromagnetic surfaces, this paper presents a high-load-density electro-permanent magnetic foot with controllable adhesion, featuring force-feedback circular Halbach-net electro-permanent magnet (CHN-EPM) adhesion units and a magnetization control system. Due to its three-dimensional magnetic circuit structure and flux-concentration effect, the CHN-EPM enables a distributed parallel magnetic flux path...
Most detailed map of the universe's hidden magnetic fields released
Most detailed map of the universe's hidden magnetic fields released Lisa Lock Scientific Editor Andrew Zinin Lead Editor The largest magnetic map of the universe ever produced—five times larger than all previous efforts combined—marks the beginning of a new generation of research into intergalactic magnetism. Magnetic fields influence how galaxies grow, how matter moves through space, and how the universe has evolved over billions of years. The new map was produced by an international team...
Magnetic Resonance Dynamics via Fractional Bloch Equation: a Hybrid Computational Framework
arXiv:2605.30856v1 Announce Type: new Abstract: Bloch equations are a powerful tool in describing the dynamics of nuclear magnetization in magnetic resonance phenomena. The fractional generalization of the Bloch equation effectively captures the anomalous relaxation and diffusion in porous, heterogeneous, and complex media. These equations describe how nuclear magnetization evolves under the influence of magnetic fields and relaxation processes.
'Totally counterintuitive': Scientists accidentally discover magnetic fields around 7 distant planets, opening new window in the search for life
'Totally counterintuitive': Scientists accidentally discover magnetic fields around 7 distant planets, opening new window in the search for life In an astronomical first, researchers have measured the magnetic fields of seven "hot Jupiter" planets beyond our solar system — adding new clues in the search for alien life. In a first-of-its-kind discovery, astronomers claim they have directly measured the magnetic fields of multiple planets beyond our solar system — potentially providing a...
'Hot Jupiter' winds blasting at over 15,000 mph reveal 1st evidence of exoplanets with magnetic fields
'Hot Jupiter' winds blasting at over 15,000 mph reveal 1st evidence of exoplanets with magnetic fields "A key step toward ultimately understanding which planets can stay alive, keep their water, and perhaps even, one day, host life as we know it." Astronomers have discovered the first evidence of magnetic fields around planets beyond the solar system, and they did so by studying the worlds' high-speed, violent winds. This marks the first direct measurement of exoplanet magnetic field...
Gyrokinetic global simulation of Alfvenic ion temperature gradient mode in reversed magnetic shear
arXiv:2605.31313v1 Announce Type: new Abstract: In this work, a systematic study of electromagnetic instabilities driven by the temperature gradient in magnetically confined fusion plasmas with reversed magnetic shear is conducted using gyrokinetic particle-in-cell simulations. An electromagnetic instability arising in the low-beta regime is investigated, where beta=8*pi*nT/B^2 denotes the ratio of plasma pressure to magnetic pressure. Within a reversed shear safety factor (q) profile, when...
Local relaxation and scale-dependent alignment in compressible, magnetized turbulence
arXiv:2504.15538v2 Announce Type: replace Abstract: Driven net- and no-net-flux MHD turbulence simulations up to $10,\!368^3$ reveal sign-mixed velocity-magnetic, velocity-vorticity, and magnetic-current aligned patches below the energy equipartition scale. The first two angles scale as $\lambda^{1/8}$ and $\lambda^{1/16}$, while magnetic-current alignment varies weakly with scale. We develop and test a constant-flux transport model for departures from relaxed states, which predicts both...
Fast Radio Bursts produced during collapse of macroscopic X-mode in magnetized pair plasma
arXiv:2606.09417v1 Announce Type: cross Abstract: We demonstrate that in highly magnetized pair plasma nonlinear long-wavelength X-modes experience wave collapse/breaking, whereby the wave undergoes severe spatial steepening, driven by nonlinear modifications of the refractive index and strong ponderomotive forces. The collapse/wave breaking occurs in a narrow parameter regime, when the fluctuating part of the magnetic field exceed the guide field, and plasma magnetization is close to the...