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Rapid variability of the arcsec-scale X-ray jets of SS 433
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We present X-ray images of all the available Chandra observations of the galactic jet source SS 433. We have studied the morphology of the X-ray images and inspected the evolution of the arcsec X-ray jets, recently found to be manifestations of in situ reheating of the relativistic gas downstream in the jets. The Chandra images reveal that the arcsec X-ray jets are not steady long-term structures; the structure varies, indicating that the reheating processes have no preference for a particular precession phase or distance from the binary core. Three observations made within about five days in 2001 May, and a 60-ks observation made in 2003 July, show that the variability of the jets can be very rapid, from time-scales of days to (possibly) hours. The three 2001 May images show two resolved knots in the east jet getting brighter one after the other, suggesting that a common phenomenon might be at the origin of the sequential reheatings of the knots. We discuss possible scenarios and propose a model to interpret these brightenings in terms of a propagating shock wave, revealing a second, faster outflow in the jet.
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MIGLIARI, Simone, FENDER, R. p., BLUNDELL, K. n., MÉNDEZ, M., VAN DER KLIS, M.. Rapid variability of the arcsec-scale X-ray jets of SS 433. _Monthly Notices of the Royal Astronomical Society_. 2005. Vol. 358, núm. 3, pàgs. 860-868. [consulta: 20 de gener de 2026]. ISSN: 0035-8711. [Disponible a: https://hdl.handle.net/2445/99488]