Volume 448, Number 1, March II 2006
|Page(s)||15 - 21|
|Section||Cosmology (including clusters of galaxies)|
|Published online||17 February 2006|
Precessing jets from a moving source and bright X-ray filaments in galaxy clusters
Harvard-Smithsonian Center for Astrophysics, MS-83, 60 Garden Street, Cambridge, MA 02138, USA e-mail: firstname.lastname@example.org
2 Instituto de Astronomía, Universidad Nacional Autónoma de México, Ciudad Universitaria, Apartado Postal 70–248, CP 04510, México D.F., México e-mail: email@example.com
3 Instituto de Ciencias Nucleares, Ciudad Universitaria, Apartado Postal 70-543, CP 04510, México D.F., México e-mail: [pablo,raga]@nucleares.unam.mx
Accepted: 3 October 2005
We present hydrodynamical calculations carried out with the 3D yguazú-a code for a precessing jet model that is interacting with a plane parallel wind. This scenario describes an extragalactic jet in which the jet source is in motion with respect to the surrounding intra-cluster medium. From the numerical results, synthetic emission maps and spectra in X-ray band were obtained. We compare these predictions with observations of the radio jets emanating from the radio-galaxy 4C 26.42 (in the Abell 1795 galaxy cluster). We find that the general morphology of the radio jets can be described by a point-symmetric precessing jet system interacting with a plane parallel wind (i.e., the intra-cluster medium flowing past the galaxy). We also find that our synthetic X-ray emission maps reproduce the observed large scale structures (with sizes on the order of tens of kpc).
Key words: hydrodynamics / methods: numerical / galaxies: jets / X-rays: galaxies: clusters
© ESO, 2006
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