We present a numerical study of propagation of VLF whistler-mode waves in a laboratory plasma. Our goal is to understand whistler propagation in magnetic field-aligned irregularities (also called channels or ducts). Two cases are examined, that of a high-frequency (x > Xce=2) whistler in a density depletion duct and that of a low-frequency (x < Xce=2) whistler in a density enhancement. Results ...

Nonlinear whistler-mode phenomena observed in laboratory plasmas will be addressed. Nonlinearities arise when strong waves modify the density, temperature and magnetic field, all of which affect the wave propagation. A brief review of thermal filamentation will be given. The main focus is on the magnetic nonlinearity of whistler modes whose wave magnetic fields exceed the ambient magnetic field...

Nonlinear three dimensional, time dependent, fluid simulations of whistler wave turbulence are performed to investigate role of whistler waves in solar wind plasma turbulence in which characteristic turbulent fluctuations are characterized typically by the frequency and length scales that are respectively bigger than ion gyro frequency and smaller than ion gyro radius. The electron inertial len...

Whistler Text-to-Speech engine was designed so that we can automatically construct the model parameters from training data. This paper will focus on recent improvements on prosody and acoustic modeling, which are all derived through the use of probabilistic learning methods. Whistler can produce synthetic speech that sounds very natural and resembles the acoustic and prosodic characteristics of...

Ab&&--The dispersion equation for a whistler mode propagation in a warm plasma, subjected to parallel static electric and magnetic fields, is derived by using a linearized coupled VlasovMaxwell equation. From the derived dispersion equation, the amplitude constant CL and phase constant B of the whistler mode are expressed in terms of static electric field Es, static magnetic field B,, the elect...

Whistler Text-to-Speech engine was designed so that we can automatically construct the model parameters from training data. This paper will focus on recent improvements on prosody and acoustic modeling, which are all derived through the use of probabilistic learning methods. Whistler can produce synthetic speech that sounds very natural and resembles the acoustic and prosodic characteristics of...

Interview with Dr. Ken Whistler, technical director of the Unicode Consortium on the origin of the Unicode standard and its relation to ISO/IEC 10646. Dr. Whistler answers several questions related to the perceived implementation problems and apparent weaknesses of the Unicode standard. 1. Le cri, une des langues autochtones parlées au Québec, est pris en charge par Unicode. 330 DN – 6/2002. Un...

[1] The accepted mechanism for whistler generation implicitly assumes that the causative lightning stroke occurs within reasonable proximity to the conjugate foot point of the guiding magnetic field line and that nighttime whistlers are prevalent because of low transionospheric attenuation. However, these assumptions are not necessarily valid. In this study we consider whistler observations fro...

We examine a competition between the whistler and Alfvén fire hoses driven by bi-Maxwellian protons with Tp‖ > Tp⊥, where Tp‖ and Tp⊥ are proton temperatures, parallel and perpendicular to the background magnetic field, respectively. We extend the work of Hellinger and Matsumoto [2000] using a two-dimensional hybrid simulation that includes both the instabilities. In the simulation the whistler...

Whistler mode chorus emissions with a characteristic frequency chirp are important magnetospheric waves, responsible for the acceleration of outer radiation belt electrons to relativistic energies and also for the scattering loss of these electrons into the atmosphere. A laboratory experiment (Van Compernolle et al 2015 Phys. Rev. Lett. 114 245002, An et al 2016 Geophys. Res. Lett.) in the larg...