About: Frequency variations of solar radio zebras and their power-law spectra

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Power spectra of the frequency variations of zebras are computed to estimate the spectra of the plasma density variations in radio zebra sources. Methods: Frequency variations of zebra lines and the high-frequency boundary of the whole radio burst were determined with and without the frequency fitting. The computed time dependencies of these variations were analyzed with the Fourier method. First, we computed the variation spectrum of the high-frequency boundary of the whole radio burst, which is composed of several zebra patterns. This power spectrum has a power-law form with a power-law index -1.65. Then, we selected three well-defined zebra-lines in three different zebra patterns and computed the spectra of their frequency variations. The power-law indices in these cases are found to be in the interval between -1.61 and -1.75. Finally, assuming that the zebra-line frequency is generated on the upper-hybrid frequency and that the plasma frequency omegape is much higher than the electron-cyclotron frequency omegace, the Fourier power spectra are interpreted to be those of the electron plasma density in zebra radio sources. Power spectra of the frequency variations of zebras are computed to estimate the spectra of the plasma density variations in radio zebra sources. Methods: Frequency variations of zebra lines and the high-frequency boundary of the whole radio burst were determined with and without the frequency fitting. The computed time dependencies of these variations were analyzed with the Fourier method. First, we computed the variation spectrum of the high-frequency boundary of the whole radio burst, which is composed of several zebra patterns. This power spectrum has a power-law form with a power-law index -1.65. Then, we selected three well-defined zebra-lines in three different zebra patterns and computed the spectra of their frequency variations. The power-law indices in these cases are found to be in the interval between -1.61 and -1.75. Finally, assuming that the zebra-line frequency is generated on the upper-hybrid frequency and that the plasma frequency omegape is much higher than the electron-cyclotron frequency omegace, the Fourier power spectra are interpreted to be those of the electron plasma density in zebra radio sources. (en)
Title	Frequency variations of solar radio zebras and their power-law spectra Frequency variations of solar radio zebras and their power-law spectra (en)
skos:prefLabel	Frequency variations of solar radio zebras and their power-law spectra Frequency variations of solar radio zebras and their power-law spectra (en)
skos:notation	RIV/67985815:_____/14:00429504!RIV15-GA0-67985815
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(GAP209/12/0103)
http://linked.open...iv/cisloPeriodika	January
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Karlický, Marian
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Astronomický ústav AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	17514
http://linked.open...ai/riv/idVysledku	RIV/67985815:_____/14:00429504
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Sun; radio radiation; plasmas (en)
http://linked.open.../riv/klicoveSlovo	plasmas Sun radio radiation
http://linked.open...odStatuVydavatele	FR - Francouzská republika
http://linked.open...ontrolniKodProRIV	[E36210936CE8]
http://linked.open...i/riv/nazevZdroje	Astronomy & Astrophysics
http://linked.open...in/vavai/riv/obor	BN
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...cetTvurcuVysledku	1 (xsd:int)
http://linked.open...vavai/riv/projekt	Radio and X-ray diagnostics of primary-energy-release processes in solar flares and their numerical simulations
http://linked.open...UplatneniVysledku	2014
http://linked.open...v/svazekPeriodika	561
http://linked.open...iv/tvurceVysledku	Karlický, Marian
http://linked.open...ain/vavai/riv/wos	000330584000034
issn	0004-6361
number of pages	4 (xsd:int)
http://bibframe.org/vocab/doi	10.1051/0004-6361/201322547

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