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http://hdl.handle.net/2445/99488
Title: | Rapid variability of the arcsec-scale X-ray jets of SS 433 |
Author: | Migliari, Simone Fender, R. P. Blundell, K. N. Méndez, M. Van der Klis, M. |
Keywords: | Astronomia de raigs X Jets (Astrofísica) Estels binaris de raigs X Radioastronomia X-ray astronomy Astrophysical jets X-ray binaries Radio astronomy |
Issue Date: | Jan-2005 |
Publisher: | Royal Astronomical Society |
Abstract: | 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. |
Note: | Reproducció del document publicat a: http://dx.doi.org/10.1111/j.1365-2966.2005.08791.x |
It is part of: | Monthly Notices of the Royal Astronomical Society, 2005, vol. 358, num. 3, p. 860-868 |
URI: | http://hdl.handle.net/2445/99488 |
Related resource: | http://dx.doi.org/10.1111/j.1365-2966.2005.08791.x |
ISSN: | 0035-8711 |
Appears in Collections: | Articles publicats en revistes (Física Quàntica i Astrofísica) |
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