Semi-harmonic and intermittent solar decimetric spikes

0345291 - ASÚ 2011 RIV GB eng C - Conference Paper (international conference)
Fernandes, F. C. R. - Bolzan, M.J.A. - Rosa, R. R. - Dutra, J.A.S.S. - Cecetto, J.R. - Mészárosová, Hana - Sawant, H. S.
Semi-harmonic and intermittent solar decimetric spikes.
Solar and stellar variability: Impact on Earth and planets. Cambridge: Cambridge University Press, 2010 - (Kosovichev, A.; Andrei, A.; Rozelot, J.), s. 81-83. IAU Symposium Proceedings Series, IAU S264. ISBN 978-0-521-76492-6. ISSN 1743-9213.
[Symposium of the International Astronomical Union /264./. Rio de Janeiro (BR), 03.08.2009-07.08.2009]
Institutional research plan: CEZ:AV0Z10030501
Keywords : Sun * activity * radio radiation
Subject RIV: BN - Astronomy, Celestial Mechanics, Astrophysics

We present the analysis of the narrowband solar radio spike emissions observed by the Brazilian Solar Spectroscope (BSS) on 24 June, 1999, at 16:53:55-16:56:48 UT. The data were recorded with temporal resolution of 50 ms and frequency resolution of 5 MHz. The dynamic spectra of clusters of spikes were recorded in 100 channels in the 1.2-1.7 GHz frequency band. The groups of radio spikes observed clearly show spectral semi-harmonic structures and an intermittent temporal patterns. The observational parameters were determined from the dynamic spectra analysis. The wavelet analysis technique able us to determine the temporal cadence for the clusters.
Permanent Link: http://hdl.handle.net/11104/0186604