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- W4322002834 abstract "LOFAR low band interferometric images of type III solar radio bursts during an M class flare on 7 September 2017 show distinct sources with variations in their positions and intermittent dual source structures. We identify these as fundamental and harmonic emission, with the one or other being dominant at times. The data show that transport effects due to refraction and scattering play a significant role, both in source separation and drift of their apparent positions. We present a method of automatically separating fundamental and harmonic contributions that allows for obtaining separate lightcurves. Comparing the lightcurves of fundamental and harmonic pairs, e.g. 35 MHz and 70 MHz, enables studies of radio wave propagation in the solar corona. Harmonic sources at the lowest observable frequencies are relevant for the transition into the solar wind, and for joint observing campaigns with Parker Solar Probe and Solar Orbiter that are currently investigating the inner heliosphere." @default.
- W4322002834 created "2023-02-26" @default.
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- W4322002834 date "2023-05-15" @default.
- W4322002834 modified "2023-10-18" @default.
- W4322002834 title "Separating fundamental and harmonic sources in LOFAR solar type III radio burst images" @default.
- W4322002834 doi "https://doi.org/10.5194/egusphere-egu23-12283" @default.
- W4322002834 hasPublicationYear "2023" @default.
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