The outer x-ray and radio jets in R Aquarii: evolution over five years

Details The outer x-ray and radio jets in R Aquarii: evolution over five years The outer x-ray and radio jets in R Aquarii: evolution over five years

Dec 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005aas...207.7008k&link_type=abstract

American Astronomical Society Meeting 207, #70.08; Bulletin of the American Astronomical Society, Vol. 37, p.1275

Physics

Scientific paper

The symbiotic star R Aquarii has been known to emit collimated outflow in the form of jets for many years. We report on five years of observations in x-rays and radio using Chandra, VLA and XMM-Newton. We discuss the evolution of the outer thermal jets, including new observations performed in June and October 2005. We see motion of the NE x-ray jet at a projected velocity of about 600 km s-1. The SW x-ray jet has almost disappeared between 2000.7 and 2004.0. An XMM grating spectrum of the NE jet confirms the existence of O VII He-like lines, and offers the possibility of doing plasma density diagnostics. We comment on on the physics of cooling in the SW jet and implications for the density of the x-ray emitting gas, the heating mechanism, and mass and kinetic energy in the jets and its implications for the system as a whole. This work was supported by NASA and NSF.

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