AAS 200th meeting, Albuquerque, NM, June 2002
Session 69. First Results from RHESSI
SPD Display, Thursday, June 6, 2002, 9:20am-4:00pm, SW Exhibit Hall

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[69.04] First Results of Joint OVSA and HESSI Observations

D. E. Gary (New Jersey Institute of Technology), E. J. Schmahl (University of Maryland/GSFC), G. M. Nita (New Jersey Institute of Technology)

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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Bulletin of the American Astronomical Society, 34
© 2002. The American Astronomical Soceity.