Spatial Locations of Solar Decimetric Bursts at Spectrographic Resolution

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Scientific paper

Several large (X-class) solar flares occurred in 2006 December that included strong decimetric components displaying several burst types, including zebra bursts, spike bursts, fiber bursts, pulsations, and others. The bursts were observed with the FASR Subsystem Testbed (FST---a prototype system for the Frequency Agile Solar Radiotelescope), which is operating at Owens Valley Radio Observatory. The FST, described in Liu et al. (2007), PASP 119, 303, is a three-element interferometer with spectrograph-like frequency and time resolution, and so is able to locate burst centroids with unprecedented temporal and spectral resolution. Using FST, with some assumptions, we are able to place different types of burst spatially in context with Hinode and TRACE data taken at the same time. The spatial placement of burst types within the magnetic structure extrapolated from Hinode SOT-SP vector field measurements for 2006 December 14 constrains the physical mechanisms responsible for them. We discuss the implications of these results in the context of the true spectral imaging that will be available with the full FASR.

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