Astronomy and Astrophysics – Astrophysics
Scientific paper
Dec 2011
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2011agufmsh22a..05m&link_type=abstract
American Geophysical Union, Fall Meeting 2011, abstract #SH22A-05
Astronomy and Astrophysics
Astrophysics
[2101] Interplanetary Physics / Coronal Mass Ejections, [7513] Solar Physics, Astrophysics, And Astronomy / Coronal Mass Ejections, [7534] Solar Physics, Astrophysics, And Astronomy / Radio Emissions
Scientific paper
Low frequency solar and interplanetary radio bursts are generated at frequencies below the ionospheric plasma cutoff and must therefore be measured in space, with deployable antenna systems. We present a new radio direction-finding technique that separates the problem of deriving the source direction from that of a determination of polarization. The crux of the method is to first determine the source direction independently of concerns as to its polarization. Once the source direction is known, its direct characterization in terms of Stokes vectors in a single iteration, if desired, is relatively simple. This study applies the source-direction determination to radio signatures of flares received by STEREO. We studied a radio type-II burst, obtaining the direction of arrival of the radio emission and compared the obtained positions with white-light observations.
Bale Stuart
Lindsey Charles A.
Martinez Oliveros Juan Carlos
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