Jaroslav Chum

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We investigate the ray trajectories of nonductedly propagating lower-band chorus waves with respect to their initial angle θ 0 , between the wave vector and ambient magnetic field. Although we consider a wide range of initial angles θ 0 , in order to be consistent with recent satellite observations , we pay special attention to the intervals of initial(More)
A Digital Sun Sensor (DSS) has several advantages if compared to the analogue one. It achieves higher accuracy and avoids the problems with light being reflected from the Earth's surface. The gradual degradation of the sensitivity of the elements due to radiation effects is not crucial for its proper functioning. The advances in CCD and recently in CMOS(More)
  • J. Chum, F. Jiřı́ček, D. Shklyar
  • 2002
After reviewing briefly the present state of knowledge about chorus-like emissions, we present an overview of Magion 5 satellite observations of these emissions in the inner magnetosphere of the Earth. From the extensive VLF data recorded on board the Magion 5 satellite, we show examples of different types of discrete elements, representing rising and(More)
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