Quasi-periodicity of MgXII X-ray bursts revealed by CORONAS-F SPIRIT data for solar active regions

Quasi-periodicity of MgXII X-ray bursts revealed by CORONAS-F SPIRIT data for solar active regions

A spectral analysis of a series of integrated MgXII 8.42 angstroms X-ray intensities recorded by the CORONAS-F SPIRIT spectroheliometer is presented. Statistically significant peaks for periods in the intervals 12--30 min and 40--200 min were found in the power spectra. The power spectrum for these...

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Veröffentlicht in:Astronomy reports 2005-07, Vol.49 (7), p.579-586
Hauptverfasser: Akimov, L A, Beletskii, S A, Belkina, I L, Bugaenko, O I, Velikodskii, Yu I, Zhitnik, I A, Ignat'ev, A P, Korokhin, V V, Kuzin, S V, Marchenko, G P, Pertsov, A A
Format: Artikel
Sprache:eng
Schlagworte:
Corona
Magnetic fields
Solar physics
Spectral analysis
Spectrum analysis
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Zusammenfassung:A spectral analysis of a series of integrated MgXII 8.42 angstroms X-ray intensities recorded by the CORONAS-F SPIRIT spectroheliometer is presented. Statistically significant peaks for periods in the intervals 12--30 min and 40--200 min were found in the power spectra. The power spectrum for these periods changed after the emergence of new photospheric magnetic flux in the active region NOAA 9840.
ISSN:1063-7729
1562-6881
DOI:10.1134/1.1985955