Astronomy and Astrophysics – Astrophysics
Scientific paper
Aug 1996
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1996a%26a...312..306b&link_type=abstract
Astronomy and Astrophysics, v.312, p.306-316
Astronomy and Astrophysics
Astrophysics
31
Supernova Remnants, Stars: Individual: Ss 433, Ism: Individual (W 50), X-Rays: Ism, Radio Continuum: Ism, Ism: Jets And Outflows
Scientific paper
SS 433 and the surrounding supernova remnant W 50 were observed in several pointings between March 1991 and March 1993 with the PSPC onboard ROSAT for a total of more than 60ksec. The soft X-ray flux from SS 433 varies by up to a factor of two but no clear correlation could be found with precessional or binary phase. The temperature of the best fit thermal spectrum cannot be constrained accurately, but kT>2keV. The N_H_ value towards SS 433 itself seems to be higher than to the rest of the remnant. The two oppositely directed X-ray jets show different morphological and spectral properties indicating a strong influence of the surrounding matter onto the energy loss mechanism of the jet. The spectrum of the eastern jet is non-thermal with a power law photon index {GAMMA}~1.6. The jet terminates in a region with thermal emission with strong spatial similarities between the X-ray and the radio structures. The western jet has a considerably softer X-ray spectrum, either of thermal origin or with a steep power law ( {GAMMA}>2.3).
Aschenbach Bernd
Brinkmann Wolfgang
Kawai Nobuyuki
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