The Plasma Structure in the Vicinity of the Jet of SS 433

Details The Plasma Structure in the Vicinity of the Jet of SS 433 The Plasma Structure in the Vicinity of the Jet of SS 433

Jun 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007aspc..362..121k&link_type=abstract

The Seventh Pacific Rim Conference on Stellar Astrophysics, ASP Conference Series, Vol. 362, Proceedings of the conference held

Astronomy and Astrophysics

Astrophysics

4

Scientific paper

We analyzed the X-ray spectra of SS433 in the 5--10 keV band observed with the pn camera of the European Photon Imaging Camera (EPIC) onboard XMM-Newton in four epochs, 2003 April 4, April 8, October 18, and October 25. We detected an iron K-shell absorption edge feature at E≃7.9 keV (in three epochs) or E≃7.6 keV (in one epoch). The continuum spectrum can be well reproduced with a partial covering model, where the absorber covers most of the X-ray jet with a column density of NH≃1024 cm-2. The observed edge energies are consistently explained in all the epochs if the absorbing matter is cold and is moving along the blue-shifted jet with the same velocity. We discuss the geometry of the jet structure based on these results.

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