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The reSulTS oF obServing aTMoSpheric uv radiaTion
WiTh The uSe oF “chibiS-M” uv deTecTor
G. K. Garipov
Skobel’tsyn Institute of Nuclear Physics of Lomonosov Moscow State University, Russia
Ultraviolet radiation detector as part of scientific equipment complex “Groza”
of “Chibis-M” is meant for registering ultraviolet and red radiation flashes of highaltitude
atmospheric discharges. The device is made up of 2 photoelectric receptors
(photomultipliers), which detect ultraviolet (1800…400 nm) and red (650…800 nm)
radiation. An output signal from detectors, which record time profile of a burst, is
digitized with resolution no less than 100 mcs and being recorded during the time
interval that is set by the device inner ‘ring’ memory resources (no less than 20 ms),
after that the following indications are rerecorded on the ‘ring’ memory. The
threshold switch-on level is set automatically (by feedback). Data registration is executed
through a trigger signal produced by the device itself, or through an external
trigger, which can derive from other devices of the on-board complex of scientific
equipment. In the course of the experiment dozens of events in different modes
were detected. We examine time characteristics of these events as well as the results
of correlation between ultraviolet flashes and lightning discharges, registered by UV
radiation detector and radiofrequency analyzer-recorder respectively.
coMplex analySiS oF vlF Wave phenoMena
recorded on “chibiS-M“ leo SaTelliTe
Ferencz, Csaba 1 — sci. advisor, Prof., csaba@sas.elte.hu
† Bodnár, László 2
Steinbach, Péter 1,3 — research fellow, PhD, steinb@sas.elte.hu
Szegedi, Péter 2 — engineer, peter.szegedi@gmail.com
Lichtenberger, János 1 — sen. research fellow, dr, lityi@sas.elte.hu
Ferencz, Orsolya E. 1 — research fellow, PhD, orsi@sas.elte.hu
Hamar, Dániel 1 — sen. research fellow, dr, dani@sas.elte.hu
1
Space Research Group, Eötvös Univ., Dept. of Geopysics and Space Sci., Budapest,
Hungary, spacerg@sas.elte.hu, +361 372 2906
2
BL ELECTRONICS, Solymár, Hungary
3
MTA-ELTE Research Group for Geology, Geophys. and Space Sci, Budapest,
Hungary
Wideband VLF waveform data series, recorded in the lower part of the topside
ionosphere on board of circular orbitig Chibis microsatellite was used for wave
propagation investigations. Lightning generated fractional hop whistlers, and accompanied
wave phenomena occurrences were selected in electric and magnetic
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