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AGN feedback by relativistic jets

  • G. V. Bicknell (a1), B. R. McNamara (a2), M. A. Nawaz (a1), R. S. Sutherland (a1), M. Umemura (a3) and A. Y. Wagner (a3)...

Abstract

Feedback provided by relativistic jets may be effective in shaping the galaxy luminosity function. The quenching mode (quasar mode) at redshifts ~2-3 potentially disperses gas in star-forming galaxies. The maintenance mode (radio mode) heats the gas in galaxy clusters counteracting cooling flows. A number of authors have examined the effect of relativistic jets in dispersing clouds in the kpc-scale inhomogeneous interstellar medium of evolving galaxies. We have also investigated a particular case of maintenance-mode feedback in our simulation of the iconic radio galaxy / cooling flow cluster Hydra A. Modelling of the knots produced by the jets in the inner 10 kpc provides an estimate of 0.8 – 0.9 c for the velocities of the jets in agreement with other velocity estimates for FR1 jets. The addition of jet precession provides realistic simulations of the morphology of the Hydra A radio source and raises interesting questions as to the role of black hole and disk precession, in general, in galaxy formation.

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References

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AGN feedback by relativistic jets

  • G. V. Bicknell (a1), B. R. McNamara (a2), M. A. Nawaz (a1), R. S. Sutherland (a1), M. Umemura (a3) and A. Y. Wagner (a3)...

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