Results 31 to 40 of about 265,660 (291)
Abnormal oscillation modes in a waning light bridge
, 2016 A sunspot acts as a waveguide in response to the dynamics of the solar interior; the trapped waves and oscillations could reveal its thermal and magnetic structures.
Walsh, Robert W., Yuan, Ding
core +1 more source
Magnetic field detection using spin-torque nano-oscillator combined with magnetic flux concentrator
AIP Advances, 2023 Spin-torque nano-oscillators (STNO) are studied in terms of the Landau–Lifshitz–Gilbert (LLG) equation. The effect on the limit of detectivity of an STNO concerning externally applied magnetic fields is studied with micromagnetic models by placing ...
Denis Tonini +3 more
doaj +1 more source
Dynamics of magnetic flux tubes in accretion disks of Herbig Ae/Be stars
Open Astronomy, 2022 The dynamics of magnetic flux tubes (MFTs) in the accretion disk of typical Herbig Ae/Be star (HAeBeS) with fossil large-scale magnetic field is modeled taking into account the buoyant and drag forces, radiative heat exchange with the surrounding gas ...
Khaibrakhmanov Sergey A. +1 more
doaj +1 more source
Investigation of quasi-periodic varaiations in hard X-rays of solar flares
, 2009 The aim of the present paper is to use quasi-periodic oscillations in hard X-rays (HXRs) of solar flares as a diagnostic tool for investigation of impulsive electron acceleration.
A. Asai +27 more
core +1 more source
Magnetic Perturbations to Stellar Oscillation Eigenfrequencies [PDF]
Symposium - International Astronomical Union, 1988 Magnetic fields contribute to the splitting of the degeneracy of modes of like order and degree. The splitting is estimated for some simple hypothetical toroidal magnetic field configurations in the sun, and the results are compared with previous asymptotic estimates.
D.O. Gough, M.J. Thompson
openaire +1 more source
Current Tracking Adaptive Control of Brushless DC Motors
International Journal of Adaptive Control and Signal Processing, EarlyView.In this paper, the current tracking for Brushless Direct Current motors is approached considering uncertainty in the parameters of the motor's model. An adaptive control scheme to compensate electrical parameters uncertainty is proposed without requiring any knowledge of the mechanical parameters.
Fernanda Ramos‐García +3 more
wiley +1 more source
The self-similar, non-linear evolution of rotating magnetic flux ropes [PDF]
Annales Geophysicae, 1995 We study, in the ideal MHD approximation, the non-linear evolution of cylindrical magnetic flux tubes differentially rotating about their symmetry axis. Our force balance consists of inertial terms, which include the centrifugal force, the gradient of
C. J. Farrugia +2 more
doaj +1 more source
A Modified Approach to Single-Spin Detection Using Magnetic Resonance Force Microscopy
, 1999 The magnetic moment of a single spin interacting with a cantilever in magnetic resonance force microscopy (MRFM) experiences quantum jumps in orientation rather than smooth oscillations.
D. Rugar +10 more
core +1 more source
Oscillating Magnetized Color Superconducting Quark Stars
Universe, 2022 The main objective of this work is to study the structure, composition, and oscillation modes of color superconducting quark stars with intense magnetic fields. We adopted the MIT bag model within the color superconductivity CFL framework, and we included the effects of strong magnetic fields to construct the equation of state of stable quark matter ...
Marcos Osvaldo Celi +3 more
openaire +5 more sources
Advanced Functional Materials, EarlyView.This work explores Li‐substituted P2 layered oxides for Na‐ion batteries by crystallographic and electrochemical studies. The effect of lithium on superstructure orderings, on phase transitions during synthesis and electrochemical cycling and on the interplay of O‐ versus TM‐redox is revealed via various advanced techniques, including semi‐simultaneous
Mingfeng Xu +5 more
wiley +1 more source