Working a Whistler
نویسندگان
چکیده
منابع مشابه
Detection of Whistler Waves
A whistler wave is a very low frequency electromagnetic wave generated by lightning discharges. As the electromagnetic wave travels through the plasma environments of the ionosphere and magnetosphere, it undergoes dispersion of a several thousand kilohertz. Because the propagation velocity decreases with frequency, the lower frequency components of the wave arrive later than the higher frequenc...
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We report a study of penetration of the VLF electromagnetic waves induced by lightning to the ionosphere. We compare the fractional hop whistlers recorded by the ICE experiment onboard the DEMETER satellite with lightning detected by the EUCLID detection network. To identify the fractional hop whistlers, we have developed software for automatic detection of the fractional-hop whistlers in the V...
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We introduce Whistler, a trainable Text-to-Speech (TTS) system, that automatically learns the model parameters from a corpus. Both prosody parameters and concatenative speech units are derived through the use of probabilistic learning methods that have been successfully used for speech recognition. Whistler can produce synthetic speech that sounds very natural and resembles the acoustic and pro...
متن کاملWhistler Emission by Electron Beams
Experimental and theoretical investigation of whistler waves produced in the interaction of a density modulated electron beam with a magnetized plasma are presented for the conditions of active space experiments in the Earth ionosphere as well as for the case of overdense laboratory plasmas. Structures of the electromagnetic fields far and near the beam, efficiency of the beam modulation, emitt...
متن کاملWhistler Waves Emitted by a Thin Modulated Electron Beam
The theory of whistler wave interaction with a modulated electron beam of finite radius, injected parallel to the magnetic field in an unbounded space plasma is considered The study is done in the case of sheared whistlers interacting with the thin beam, when the parallel wave number is very small compared to the perpendicular one. The electromagnetic fields inside and outside the beam are dete...
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ژورنال
عنوان ژورنال: Scientific American
سال: 1912
ISSN: 0036-8733
DOI: 10.1038/scientificamerican12141912-514