The X-ray jets of active galaxies |
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Authors: | D M Worrall |
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Institution: | (1) Department of Physics, University of Bristol, Tyndall Ave, Bristol, BS8 1TL, UK |
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Abstract: | Jet physics is again flourishing as a result of Chandra’s ability to resolve high-energy emission from the radio-emitting structures of active galaxies and separate it from the X-ray-emitting thermal environments of the jets. These enhanced capabilities have coincided with an increasing interest in the link between the growth of super-massive black holes and galaxies, and an appreciation of the likely importance of jets in feedback processes. I review the progress that has been made using Chandra and XMM-Newton observations of jets and the medium in which they propagate, addressing several important questions, including: Are the radio structures in a state of minimum energy? Do powerful large-scale jets have fast spinal speeds? What keeps jets collimated? Where and how does particle acceleration occur? What is jet plasma made of? What does X-ray emission tell us about the dynamics and energetics of radio plasma/gas interactions? Is a jet’s fate determined by the central engine? |
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Keywords: | Acceleration of particles Radiation mechanisms: non-thermal Galaxies: active Galaxies: jets Radio continuum: galaxies X-rays: galaxies |
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