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Extremely Low Frequency meteor detection

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Part of the TCSS Symposium

For more than 200 years large meteors called fireballs entering the atmosphere have been observed to produce audible sounds simultaneously with the optical flash. Since sound waves travel much slower that visible light, the only explanation was that electromagnetic waves produced by the meteors induce a vibration in a transducer close to the observer, producing an audible sound, known as electrophonics. VLF detections were partly successful in the past, but no ELF observations have shown direct and reliable relation to meteors despite being theoretically predicted. A new system has been designed and set at the world’s largest ground-based Schumann antenna to detect ELF signals. Observations were started in December 2015 and new data is being processed, showing statistical correlation between number of meteors and detected signals.

This talk is part of the Trinity College Science Society (TCSS) series.

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