Astronomy and Astrophysics – Astronomy
Scientific paper
Jul 1990
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1990stin...9116856b&link_type=abstract
Unknown
Astronomy and Astrophysics
Astronomy
Black Holes (Astronomy), Neutron Stars, Supernova Remnants, X Ray Binaries, X Ray Spectra, Artificial Satellites, Bremsstrahlung, Eclipses, X Ray Spectroscopy
Scientific paper
Recent x ray observations of SS433 with the Ginga satellite, centered at the phases of optical primary minimum revealed new information about the systems properties. The main observational result is that the spectrum of the source is extremely hard, best fitted with a thermal bremsstrahlung law with kT approximately less than or equal to 30 keV, which softens during eclipse to kT approximately 12 keV. The 6.7 keV iron line region appears to be very complex and varies with the precessional phase. It is argued that the x ray flux from the jets is strongly modulated by large structures on the disc. If these can be modeled properly they will provide important clues to the disc's physical properties which might lead to a better understanding of the precession mechanism.
Brinkmann Wolfgang
Fink Henner
Kawai Nobuyuki
Matsuoka Masaru
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