About: Fast Magnetoacoustic Waves in a Fan Structure Above a Coronal Magnetic Null Point

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	We analyze the 26 November 2005 solar radio event observed interferometrically at frequencies of 244 and 611 MHz by the Giant Metrewave Radio Telescope (GMRT) in Pune, India. Observations are used to make interferometric maps from 06:50 to 07:12 UT. The light curves of these sources show that only two sources at 244 MHz and 611 MHz are well correlated in time. Using SoHO/MDI observations and potential magnetic field extrapolation we demonstrate that both the correlated sources are located in the fan structure of magnetic field lines starting from a coronal magnetic null point. Wavelet analysis detects tadpoles with periods in the range P = 10 – 83 s. These wavelet tadpoles indicate the presence of fast magnetoacoustic waves that propagate in the fan structure of the coronal magnetic null point. We estimate the plasma parameters in radio sources and find them consistent with the presented scenario involving the coronal magnetic null point. We analyze the 26 November 2005 solar radio event observed interferometrically at frequencies of 244 and 611 MHz by the Giant Metrewave Radio Telescope (GMRT) in Pune, India. Observations are used to make interferometric maps from 06:50 to 07:12 UT. The light curves of these sources show that only two sources at 244 MHz and 611 MHz are well correlated in time. Using SoHO/MDI observations and potential magnetic field extrapolation we demonstrate that both the correlated sources are located in the fan structure of magnetic field lines starting from a coronal magnetic null point. Wavelet analysis detects tadpoles with periods in the range P = 10 – 83 s. These wavelet tadpoles indicate the presence of fast magnetoacoustic waves that propagate in the fan structure of the coronal magnetic null point. We estimate the plasma parameters in radio sources and find them consistent with the presented scenario involving the coronal magnetic null point. (en)
Title	Fast Magnetoacoustic Waves in a Fan Structure Above a Coronal Magnetic Null Point Fast Magnetoacoustic Waves in a Fan Structure Above a Coronal Magnetic Null Point (en)
skos:prefLabel	Fast Magnetoacoustic Waves in a Fan Structure Above a Coronal Magnetic Null Point Fast Magnetoacoustic Waves in a Fan Structure Above a Coronal Magnetic Null Point (en)
skos:notation	RIV/67985815:_____/13:00391314!RIV14-GA0-67985815
http://linked.open...avai/predkladatel	Astronomický ústav AV ČR, v.v.i.
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(GAP209/12/0103)
http://linked.open...iv/cisloPeriodika	2
http://linked.open...vai/riv/dodaniDat	2014
http://linked.open...aciTvurceVysledku	Karlický, Marian Dudík, Jaroslav Mészárosová, Hana
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	74713
http://linked.open...ai/riv/idVysledku	RIV/67985815:_____/13:00391314
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	Sun: corona; flares; corona; radio radiation (en)
http://linked.open.../riv/klicoveSlovo	Sun: corona corona flares radio radiation
http://linked.open...odStatuVydavatele	NL - Nizozemsko
http://linked.open...ontrolniKodProRIV	[219C854E65A5]
http://linked.open...i/riv/nazevZdroje	Solar Physics
http://linked.open...in/vavai/riv/obor	BN
http://linked.open...ichTvurcuVysledku	3 (xsd:int)
http://linked.open...cetTvurcuVysledku	5 (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	2013
http://linked.open...v/svazekPeriodika	283
http://linked.open...iv/tvurceVysledku	Karlický, Marian Sawant, H. S. Dudík, Jaroslav Mészárosová, Hana Madsen, F. R. H.
http://linked.open...ain/vavai/riv/wos	000316265100016
issn	0038-0938
number of pages	16 (xsd:int)
http://bibframe.org/vocab/doi	10.1007/s11207-013-0243-6

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