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Issue A&A
Volume 448, Number 1, March II 2006
Page(s) 15 - 21
Section Cosmology (including clusters of galaxies)
DOI http://dx.doi.org/10.1051/0004-6361:20053382



A&A 448, 15-21 (2006)
DOI: 10.1051/0004-6361:20053382

Precessing jets from a moving source and bright X-ray filaments in galaxy clusters

M. Rodríguez-Martínez1, 2, P. F. Velázquez3, L. Binette2 and A. C. Raga3

1  Harvard-Smithsonian Center for Astrophysics, MS-83, 60 Garden Street, Cambridge, MA 02138, USA
    e-mail: mario@head.cfa.harvard.edu
2  Instituto de Astronomía, Universidad Nacional Autónoma de México, Ciudad Universitaria, Apartado Postal 70-248, CP 04510, México D.F., México
    e-mail: binette@astroscu.unam.mx
3  Instituto de Ciencias Nucleares, Ciudad Universitaria, Apartado Postal 70-543, CP 04510, México D.F., México
    e-mail: [pablo,raga]@nucleares.unam.mx

(Received 7 May 2005 / Accepted 3 October 2005)

Abstract
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

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© ESO 2006


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