Chandra and RXTE study of the Western Lobe of W50 and Galactic Microquasar SS 433

Details Chandra and RXTE study of the Western Lobe of W50 and Galactic Microquasar SS 433 Chandra and RXTE study of the Western Lobe of W50 and Galactic Microquasar SS 433

Aug 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005jrasc..99s.141m&link_type=abstract

Journal of the Royal Astronomical Society of Canada, Vol. 99, No. 4, p.141

Astronomy and Astrophysics

Astronomy

Scientific paper

W50 is classified as a Galactic supernova remnant and harbors SS 433, an X-ray binary consisting of a compact object accreting matter from a companion star at a super-Eddington rate and shooting out jets at 0.26c. A summary of Master's thesis work on this system will be presented in two parts. First, a 75 ksec Chandra observation of the western lobe of W50 is presented, which provides the highest-resolution X-ray image obtained to date. We have confirmed that at the site of interaction between the SS 433 western jet and the interstellar gas the emission is non-thermal in nature. Correlating the X-ray emission with radio and infrared observations, we find that the helical pattern seen in radio is also observed with Chandra. No correlation is found between the X-ray and infrared emission. Second, the RXTE study of SS 433 is presented. This will be the first complete spectral analysis of SS 433 up to X-ray energies of 70 keV. The emission from SS 433 is well described by a bremsstrahlung model, and in some cases a powerlaw model, with two Gaussian lines. The temperature, flux, and photon index are correlated with the binary phase and radio flares.

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