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FIZIKA A 8 (1999) 3 , 91-98
 
OBSERVATIONAL DETECTION OF METEOR-PRODUCED VLF ELECTROMAGNETIC
RADIATION
S. GARAJa,b, D. VINKOVIĆc, G. ZGRABLIĆa,
D. KOVAČIĆa, S. GRADEČAKa,
N. BILIŠKOVa, N. GRBACa and Ž. ANDREIĆd
aDepartment of Physics, Faculty of Science, University of
Zagreb, Bijenička 32,
10000 Zagreb, Croatia
bI. G. A. - Département de Physique, École Polytechnique
Fédérale de Lausanne, CH-1015 Lausanne - EPFL, Switzerland (E-mail: [email protected])
cDepartment of Physics and Astronomy, University of Kentucky,
Lexington, KY 40506, USA
dThin Films Laboratory, Department of Materials Science,
"R. Bošković" Institute, Bijenička 54, 10000 Zagreb, Croatia
Dedicated to Professor Boran Leontić on the occasion of his 70th
birthday
Received 24 November 1999; revised manuscript received 15 February 2000
Accepted 21 February 2000
In November 1998, Croatian Physical Society's expedition to Mongolia was undertaken.
The goal was to make measurements of the puzzling electrophonic sounds and very low
frequency (VLF) radio emission from meteors during the anticipated Leonid meteor storm.
During the night of 16/17 November 1998, an extremely high fireball activity of the Leonid
meteors occured. During this period, we performed measurements of the VLF radiation from
meteors. Here we present a positive signal which consists of a sequence of sharp, short
VLF bursts, coincident with the appearance of meteor that was recorded by the video
camera. This is the first completely controlled instrumental recording of such an event.
PACS numbers: 96.50.Kr, 94.20.-y, 94.20.Bb
UDC 523.682, 52.583
Keywords: VLF radio emission from meteors, fireball activity, Leonid meteors,
Mongolia, Croat. Phys. Soc. expedition November 1998
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