| タイトル | The Outer X-ray and Radio Jets in R Aquarii |
| 著者（英） | Sokoloski, J.; Korreck, K.; Pedelty, J.; DePasquale, J.; Krauss, M.; Kellogg, E.; Nichols, J.; Anderson, C. |
| 著者所属（英） | Smithsonian Astrophysical Observatory |
| 発行日 | 2007-01-01 |
| 言語 | eng |
| 内容記述 | 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 (sup -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. |
| NASA分類 | Astronomy |
| 権利 | Copyright |
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