Abstract One month after launching the Gravitational Wave High-energy Electromagnetic Counterpart All-sky Monitor, a bright thermonuclear X-ray burst from 4U 0614+09 was observed on 2021 January 24. We report time-resolved spectroscopy of and hint oscillation at 413 Hz with fractional amplitude ∼2.0% (rms). This coincides previously discovered Swift/Burst Alert Telescope (Strohmayer et al. 2008...

We are concerned with the geometric properties of surface plasmon resonance (SPR). SPR is a non-radiative electromagnetic wave that propagates in direction parallel to negative permittivity/dielectric material interface. It known oscillation very sensitive However, we show asymptotically localizes at places high magnitude curvature certain sense under an assumption equivalent convexity three-di...

*Correspondence: Chiaki Yanagisawa, Department of Physics and Astronomy, Stony Brook University, NY 11794-3800, USA e-mail: chiaki@ nngroup.physics.sunysb.edu Since the discovery of neutrino oscillation in atmospheric neutrinos by the Super-Kamiokande experiment in 1998, study of neutrinos has been one of exciting fields in high-energy physics. All the mixing angles were measured. Quests for (1...

The quantum resonances of classically chaotic n-disk geometries were studied experimentally utilizing thin 2D microwave geometries. The experiments yield the frequencies and widths of lowlying resonances, which are compared with semiclassical calculations. The long time or small energy behavior of the wave-vector autocorrelation gives information about the quantum decay rate, which is in good a...

We fabricated nanopillar spin-valves with a thick magnetic layer that facilitates the nucleation of a vortex. In the presence of a spin-polarized current, we observe persistent microwave oscillations, which correspond to precession of a magnetic vortex core in the thick magnetic layer, coupled to oscillations of the thinner layer, as indicated by micromagnetic simulations. The frequency varies ...

Abstract We present a microscopic approach for the coupling of cortical activity, as resulting from proper dipole currents of pyramidal neurons, to the electromagnetic field in extracellular fluid in presence of diffusion and Ohmic conduction. As a result, neural activity becomes represented by a continuous neural field equation, while an observation model for electric field potentials is obtai...

The nervous system is composed of a large number of neurons, and the electrical activities of neurons can present multiple modes during the signal transmission between neurons by changing intrinsic bifurcation parameters or under appropriate external forcing. In this review, the dynamics for neuron, neuronal network is introduced, for example, the mode transition in electrical activity, functio...

Recently, normal-mode helical antennas (NMHA) are employed as very small antennas for metal plate proximity uses [1] ~ [3]. In order to obtain efficient radiation, the self resonant condition of a NMHA should be satisfied. In this condition, the inductive reactance and the capacitive reactance of a NMHA are cancelled. As for the inductance, Wheeler presented an equation employing structural par...

The standard cosmological model predicts the existence of a cosmic neutrino background (CνB) with a present density of about nν + nν̄ ≃ 110 cm per flavour, which affects big-bang nucleosynthesis (BBN), cosmic microwave background (CMB) anisotropies, and the evolution of large scale structures (LSS). We report on a precision calculation of the CνB properties including the modification introduced ...

– one of the important applications of robots is in material handling and transport of various shaped objects. in cases where an object cannot be directly grasped by the robot gripper, and must be carried by a hook, it may be subject to undesirable swings during transport. this paper presents an analytical method for minimizing the oscillation of a suspended object during transport. this method...