Interferometric Observations of the Record-Breaking Decimetric Solar Radio Event of 2006 December 06

Details Interferometric Observations of the Record-Breaking Decimetric Solar Radio Event of 2006 December 06 Interferometric Observations of the Record-Breaking Decimetric Solar Radio Event of 2006 December 06

May 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aas...210.9329g&link_type=abstract

American Astronomical Society Meeting 210, #93.29; Bulletin of the American Astronomical Society, Vol. 39, p.216

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Scientific paper

The radio burst associated with the 2006 Dec 06, X6.5 solar flare attained a record-breaking radio flux density of nearly 1 million solar flux units in the decimetric ( 1 GHz) frequency band, exceeding the previous record by nearly a factor of 10. The event was so strong in the range 1-2 GHz that it caused loss of lock of Global Positioning System (GPS) receivers everywhere in the sunlit hemisphere of Earth. The event was observed with a new instrument operating at the Owens Valley Solar Array (OVSA), the FASR Subsystem Testbed (FST), which features not only unprecedented time and frequency resolution ( 1 microsecond and < 1 MHz, respectively), but also interferomety on three baselines to provide corresponding spatial information on a 10 arcsecond scale. The event produced about 10 million individual decimetric spike bursts produced by the Electron Cyclotron Maser (ECM) mechanism over a period of nearly 1 hour. We discuss the spectral, temporal, and positional characteristics of individual spike bursts, their statistical properties and their relation to the flare observed at other wavelengths. This work is supported by NSF grant AST-0352915 to the New Jersey Institute of Technology. We acknowledge additional support for the Owens Valley Solar Array through NSF grant AST-0607544 and NASA grant NNG06GJ40G.

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