Results 21 to 30 of about 11,871 (158)
Selective Locomotion Control of Magnetic Torque-Driven Magnetic Robots Within Confined Channels
IEEE Access, 2023 The use of global magnetic fields—typically produced by pairs of Maxwell and Helmholtz coils—offers the advantage of generating uniform magnetic fields and magnitude uniform gradient distributions over extensive volumes, while ensuring easy
Armando Ramos-Sebastian +2 more
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Helicity in the large-scale Galactic magnetic field [PDF]
Monthly Notices of the Royal Astronomical Society, 2020 ABSTRACT We search for observational signatures of magnetic helicity in data from all-sky radio polarization surveys of the Milky Way Galaxy. Such a detection would help confirm the dynamo origin of the field and may provide new observational constraints for its shape.
J L West +6 more
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The Origin and Structure of the Magnetic Fields and Currents of AGN Jets
Galaxies, 2017 This paper reviews observational evidence obtained to date about the overall structure of the magnetic fields in the jets of Active Galactic Nuclei (AGN).
Denise Gabuzda
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HELICAL MAGNETIC FIELDS FROM INFLATION [PDF]
International Journal of Modern Physics D, 2009 We analyze the generation of seed magnetic fields during de Sitter inflation considering a noninvariant conformal term in the electromagnetic Lagrangian of the form [Formula: see text], where I(ϕ) is a pseudoscalar function of a nontrivial background field ϕ.
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3D Microprinting of Iron Platinum Nanoparticle‐Based Magnetic Mobile Microrobots
Advanced Intelligent Systems, 2021 Wireless magnetic microrobots are envisioned to revolutionize minimally invasive medicine. While many promising medical magnetic microrobots are proposed, the ones using hard magnetic materials are not mostly biocompatible, and the ones using ...
Joshua Giltinan +4 more
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Direct Imaging of a Toroidal Magnetic Field in the Inner Jet of NRAO 150
Galaxies, 2016 Most formation models and numerical simulations cause a helical magnetic field to form, accelerate and collimate jets in active galactic nuclei (AGN). For this reason, observational direct evidence for the existence of these helical magnetic fields is of
Sol N. Molina +5 more
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Development of multistage energy recovery system for gyrotrons [PDF]
ITM Web of Conferences, 2019 A four-stage depressed collector based on spatial separation of electrons with different energies in the crossed electric and magnetic fields was developed for the experimental SPbPU gyrotron.
Trofimov Pavel, Louksha Oleg
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Evidence for Helical Magnetic Fields Associated with AGN Jets and the Action of a Cosmic Battery
Galaxies, 2018 Theoretical models for the electromagnetic launching of astrophysical jets have long indicated that this process should generate helical magnetic fields, which should then propagate outward with the jet plasma.
Denise Gabuzda
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Electroweak baryogenesis via chiral gravitational waves
Physics Letters B, 2018 We propose a new mechanism for electroweak baryogenesis based on gravitational waves generated by helical magnetic fields that are present during a first order electroweak phase transition. We generate a net lepton number through the gravitational chiral
H. Abedi, M. Ahmadvand, S.S. Gousheh
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Magnetic field tomography, helical magnetic fields and Faraday depolarization [PDF]
Monthly Notices of the Royal Astronomical Society, 2014 Wide-band radio polarization observations offer the possibility to recover information about the magnetic fields in synchrotron sources, such as details of their three-dimensional configuration, that has previously been inaccessible. The key physical process involved is the Faraday rotation of the polarized emission in the source (and elsewhere along ...
Horellou C, Fletcher A
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