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A self-similar model for extragalactic radio sources
Abstract
An analytical model for extragalactic radio sources with pressure-confined jets is presented. We show that the properties of the bow shock and of the gas surrounding these objects force the sources to grow in a self-similar way provided the density in the external atmosphere falls less steeply than 1/d2. Results from observations and numerical simulations are used to develop a self-consistent model for the large-scale structure of FRII objects. The jets in these sources are shown to be stable against turbulence for the observed properties of FRIIs and the divide between FRI and FRII objects in jet power is reproduced. The overall dynamics of a source are derived as a function of time and depend on the external density, the jet power and the scaleheight of the external atmosphere. Derived dynamical ages are consistent with observed spectral ages.
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Citations
Cited by
Falcke, H., Körding, E., & Markoff, S. (2004) · Astronomy & Astrophysics · doi:10.1051/0004-6361:20031683 · Cited by 768
The emission line--radio correlation for radio sources using the 7C Redshift Survey
Willott, C. J., Rawlings, S., Blundell, K. M., & Lacy, M. (1999) · Monthly Notices of the Royal Astronomical Society · doi:10.1046/j.1365-8711.1999.02907.x · Cited by 493
Falcke, H. D., Körding, E. G., & Markoff, S. (2003) · arXiv (Cornell University) · doi:10.48550/arxiv.astro-ph/0305335 · Cited by 441
A dark jet dominates the power output of the stellar black hole Cygnus X-1
Gallo, E., Fender, R., Kaiser, C., Russell, D., Morganti, R., Oosterloo, T., & Heinz, S. (2005) · Nature · doi:10.1038/nature03879 · Cited by 311
Self-citationEnßlin, T. A., & Gopal-Krishna (2001) · Astronomy & Astrophysics · doi:10.1051/0004-6361:20000198 · Cited by 273
Metadata
- Authors
- Kaiser, C. R., & Alexander, P.
- Venue
- Monthly Notices of the Royal Astronomical Society
- Publisher
- Oxford University Press (OUP)
- Published
- 1997-03-21
- Volume
- 286
- Issue
- 1
- Pages
- 215-222
- ISSN
- 0035-8711 (ISSN-L)
- 1365-2966
- OpenAlex
- W2059075380
- Cited by
- 453
- References
- 0
- FWCI
- 6.58
- Type
- journal article
- Language
- en
- Open access
- closed
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- Kaiser, C. R., & Alexander, P. (1997). A self-similar model for extragalactic radio sources. Monthly Notices of the Royal Astronomical Society. https://doi.org/10.1093/mnras/286.1.215
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Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
