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J. M. DePasquale, J. S. Nichols, E.M. Kellogg (Harvard-Smithsonian CfA)
We report on multiple Chandra observations spanning a period of 5 years as well as a more recent XMM observation of the nearby symbiotic binary R Aqr. Spectral analysis of these four observations reveals considerable variability in hardness ratios and in the strength and ionization levels of emission lines which provides insight into white dwarf accretion processes as well as continuum and line formation mechanisms. Chandra imaging of the central source also shows the formation and evolution of a new south west jet. This growing body of high-resolution X-ray data of R Aqr provides a unique glimpse into white dwarf wind-accretion processes and jet formation. We acknowledge the support of NASA contract NAS8 39073 and grant G04-5030A.
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Bulletin of the American Astronomical Society, 37 #4
© 2005. The American Astronomical Soceity.