Název: Estimation of the Apparent Source Size of Solar Radio Emissions Using SVD: An Application to Type III Radio Bursts at Long Wavelengths Observed by STEREO and Wind
Autoři: Krupař, Vratislav ; Santolík, Ondřej ; Cecconi, B. ; Maksimovic, M.
Typ dokumentu: Příspěvky z konference
Konference/Akce: Week of Doctoral Students 2010. Annual Student Conference /19./, Prague (CZ), 2010-06-01 / 2010-06-04
Rok: 2010
Jazyk: eng
Abstrakt: Type III radio bursts are intense solar radio emissions. They are frequently observed by the S/Waves instruments on-board the STEREO spacecraft. We describe a wave propagation analysis using the Singular Value Decomposition (SVD) which can be directly applied to spectral matrices measured by the High Frequency Receiver (HFR; a part of the S/Waves experiment). We have found an empirical relation between the decomposed spectral matrices and apparent source sizes for waves with a low degree of polarization. We present a joint observation of a type III radio burst by the STEREO and Wind spacecraft during small separation distances. We obtain consistent results for the apparent source size and k-vector direction using different analysis method for the measurements of the STEREO and Wind spacecraft. We demonstrate that SVD can be an effective tool for the wave analysis of radio emissions with very extended sources.
Klíčová slova: Solar Radio; STEREO; SVD; Wavelengths
Číslo projektu: CEZ:AV0Z30420517 (CEP), ME09107 (CEP), IAA301120601 (CEP)
Poskytovatel projektu: GA MŠk, GA AV ČR
Zdrojový dokument: WDS’10 Proceedings of Contributed Papers: Part II – Physics of Plasmas and Ionized Media, ISBN 978-80-7378-140-8

Instituce: Ústav fyziky atmosféry AV ČR (web)
Informace o dostupnosti dokumentu: Dokument je dostupný v příslušném ústavu Akademie věd ČR.
Původní záznam: http://hdl.handle.net/11104/0195832

Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-42632


Záznam je zařazen do těchto sbírek:
Věda a výzkum > AV ČR > Ústav fyziky atmosféry
Konferenční materiály > Příspěvky z konference