ELF/VLF radiation produced by the 1999 Leonid meteors

Authors
Citation
C. Price et M. Blum, ELF/VLF radiation produced by the 1999 Leonid meteors, EARTH MOON, 82-3, 2000, pp. 545-554
Citations number
14
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Space Sciences
Journal title
EARTH MOON AND PLANETS
ISSN journal
0167-9295 → ACNP
Volume
82-3
Year of publication
2000
Pages
545 - 554
Database
ISI
SICI code
0167-9295(2000)82-3:<545:ERPBT1>2.0.ZU;2-O
Abstract
For more than 200 years large meteors entering the atmosphere have been obs erved to produce audible sounds simultaneously with the optical flash. Sinc e sound waves travel much slower that visible light, the only explanation w as that electromagnetic waves produced by the meteors induce a vibration in a transducer close to the observer, producing an audible sound, known as e lectrophonics. To check this hypothesis, continuous measurements of low fre quency electromagnetic waves were performed during the Leonids meteor storm on the night of 18 November, 1999. The analyses of the data indicate disti nct electromagnetic pulses produced by the incoming meteors. Many of the we aker incoming meteors that could not be seen visibly were also detected ele ctromagnetically, with a peak rate of approximately 15,000 meteors per hour occurring at the peak of the storm, nearly 50 times the visible rate.