Internal structure of the Jovian simple S-burst obtained with the wavelet analysis technique

Free access article

Issue		A&A Volume 426, Number 1, October IV 2004


Page(s)		343 - 351
Section		Planets and planetary systems
DOI		http://dx.doi.org/10.1051/0004-6361:200400018

A&A 426, 343-351 (2004)
DOI: 10.1051/0004-6361:200400018

Internal structure of the Jovian simple S-burst obtained with the wavelet analysis technique

G. V. Litvinenko¹, H. O. Rucker², V. V. Vinogradov¹, M. Leitner² and V. E. Shaposhnikov³

¹ Institute of Radio Astronomy, Krasnoznamennaya St. 4, 61002 Kharkov, Ukraine
² Space Research Institute, Austrian Academy of Sciences, Schmiedlstrasse 6, 8042 Graz, Austria
e-mail: helmut.rucker@oeaw.ac.at
³ Institute of Applied Physics, Russian Academy of Sciences, Uljanov St. 46, 603600 Nizhny Novgorod, Russia

(Received 17 February 2003 / Accepted 14 May 2004 )

Abstract
The internal structure of the fundamental Jovian decameter radio emission, the simple-shaped millisecond (S-)bursts have been investigated with the continued wavelet transform (CWT) technique. The wide-band data taken for the present analysis have been obtained with the high-frequency and high-time-resolution equipment of a digital spectropolarimeter (DSP) and a waveform receiver installed on the world's largest decameter band radio telescope UTR-2 within the frame of a joint Ukraine-France-Austria-Russia INTAS project. In the wavelet spectra of the investigated events clear signatures of microsecond modulations have been found. These microsecond structures of simple Jovian S-bursts open new perspective on the development of a possible generation mechanism theory, which is briefly discussed.

Key words: methods: data analysis -- planets and satellites: individual: Jupiter -- radio continuum: solar system

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