An upper limit on nickel overabundance in the supercritical accretion disk wind of SS 433 from X-ray spectroscopy

P. Medvedev, I. Khabibullin, S. Sazonov +2

We take advantage of a long (with a total exposure time of 120 ks) X-ray observation of the unique Galactic microquasar SS 433, carried out with the XMM-Newton space observatory, t…