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2005-01

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Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/99488

Rapid variability of the arcsec-scale X-ray jets of SS 433

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Recurs relacionat

http://dx.doi.org/10.1111/j.1365-2966.2005.08791.x

Resum

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.

Matèries

Astronomia de raigs X, Jets (Astrofísica), Estels binaris de raigs X, Radioastronomia

Matèries (anglès)

X-ray astronomy, Astrophysical jets, X-ray binaries, Radio astronomy

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Articles publicats en revistes (Física Quàntica i Astrofísica)

Citació

MIGLIARI, Simone, et al. Rapid variability of the arcsec-scale X-ray jets of SS 433. Monthly Notices of the Royal Astronomical Society. 2005. Vol. 358, num. 3, pags. 860-868. ISSN 0035-8711. [consulted: 12 of August of 2026]. Available at: https://hdl.handle.net/2445/99488

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