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Properties of SS433 and ultraluminous X-ray sources in external galaxies

Published online by Cambridge University Press:  12 May 2006

S. Fabrika ,
S. Karpov ,
P. Abolmasov  and
O. Sholukhova
S. Fabrika
Affiliation:
Special Astrophysical Observatory of the Russian AS, Nizhnij Arkhyz 369167, Russia email: [email protected], [email protected], [email protected], [email protected]
S. Karpov
Affiliation:
Special Astrophysical Observatory of the Russian AS, Nizhnij Arkhyz 369167, Russia email: [email protected], [email protected], [email protected], [email protected]
P. Abolmasov
Affiliation:
Special Astrophysical Observatory of the Russian AS, Nizhnij Arkhyz 369167, Russia email: [email protected], [email protected], [email protected], [email protected]
O. Sholukhova
Affiliation:
Special Astrophysical Observatory of the Russian AS, Nizhnij Arkhyz 369167, Russia email: [email protected], [email protected], [email protected], [email protected]
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Abstract

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We suggest that the ultraluminous X-ray sources located in external galaxies (ULXs) are supercritical accretion disks like that in SS433, observed close to the disk axis. We estimate parameters of the SS433 funnel, where the relativistic jets are formed. Emergent X-ray spectrum in the proposed model of the multicolor funnel (MCF) is calculated. The spectrum can be compared with those of ULXs. We predict a complex absorption-line spectrum with broad and shallow K$\alpha$/Kc blends of the most abundant heavy elements and particular temporal variability. Another critical idea comes from observations of nebulae around the ULXs. We present results of 3D-spectroscopy of nebulae of two ULXs located in Holmberg II and NGC6946. In both cases the nebula is found to be powered by the central black hole. The nebulae are compared with SS433 nebula (W50).

Keywords

X-ray sourcesaccretion disksjetsindividual: SS433
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 1 , Symposium S230: Populations of High Energy Sources in Galaxies , August 2005 , pp. 278 - 281
Copyright
2006 International Astronomical Union