First Results of Joint OVSA and HESSI Observations

Details First Results of Joint OVSA and HESSI Observations First Results of Joint OVSA and HESSI Observations

May 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002aas...200.6904g&link_type=abstract

American Astronomical Society, 200th AAS Meeting, #69.04; Bulletin of the American Astronomical Society, Vol. 34, p.757

Astronomy and Astrophysics

Astronomy

Scientific paper

We report on an initial study of several solar bursts observed with the Owens Valley Solar Array (OVSA) and the new RHESSI X-ray spacecraft. Six M-class soft X-ray bursts were observed jointly in the first month of RHESSI operations, with a wide range of radio and hard X-ray fluxes. Both the hard X-rays and microwaves are well known to arise from electrons of similar energies, so spatial and spectral comparisons of jointly observed events are fruitful for investigating the initial energy release and subsequent evolution of the thermal plasma. The new capabilities of RHESSI to image both high and low energy X-rays with high spectral resolution offer the possibility to learn about this process in unprecedented detail. We compare and contrast the radio and hard X-ray spectra for the 6 events, and show the results of an initial investigation of the spatial characteristics as observed in the two wavelength regimes.

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