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| Titel |
Type III Radio Bursts Observed by the STEREO Spacecraft and the Nançay Radio Heliograph |
| VerfasserIn |
Vratislav Krupar, Oksana Kruparova, Ondrej Santolik, Milan Maksimovic, Baptiste Cecconi, Monique Pick |
| Konferenz |
EGU General Assembly 2013
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| Medientyp |
Artikel
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| Sprache |
Englisch
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 15 (2013) |
| Datensatznummer |
250076880
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| Zusammenfassung |
| Type III radio bursts are intense radio emissions triggered by streams of suprathermal
electrons associated with solar flares. The STEREO spacecraft provides us with
unique observations of the inner heliosphere from two different vantage points. The
High Frequency Receiver (HFR; a part of the STEREO/Waves instrument) allows
to track radio sources and investigate their polarization properties between 125
kHz and 1975 kHz. The Nançay Radio Heliograph (NRH; located about 200 km
south of Paris) records the radio data with a high-time resolution in EW and NS
directions from 150 MHz up to 450 MHz. Using NRH we are able to retrieve the two
dimensional (2D) images of the vicinity of the Sun in the given wavelength. We
present an analysis of several simple and intense type III radio bursts observed from
metric (NRH) to kilometric (HFR) wavelengths in 2009 when a separation angle
between the two STEREO achieved 90° which is the most suitable for performing a
triangulation of the radio sources. Calculated locations of source regions at kilometric
wavelengths have been compared with 2D images in metric wavelengths measured by
NRH. |
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