RELATIVISTIC JET FEEDBACK IN EVOLVING GALAXIES

By Alexander Y. Wagner, G. Bicknell. 2010

143 citations recorded by the source corpus.

Over cosmic time, galaxies grow through the hierarchical merging of smaller galaxies. However, the bright region of the galaxy luminosity function is incompatible with the simplest version of hierarchical merging, and it is believed that feedback from the central black hole in the host galaxies reduces the number of bright galaxies and regulates the co-evolution of the black hole and host galaxy. Numerous simulations of galaxy evolution have attempted to include the physical effects of such feedback with a resolution usually exceeding a kiloparsec. However, interactions between jets and the interstellar medium involve processes occurring on less than kiloparsec scales. In order to further the understanding of processes occurring on such scales, we present a suite of simulations of relativistic jets interacting with a fractal two-phase interstellar medium with a resolution of two parsecs and a largest scale of one kiloparsec. The transfer of energy and momentum to the interstellar medium is considerable, and we find that jets with powers in the range of 1043–1046 erg s−1 can inhibit star formation through the dispersal of dense gas in the galaxy core. We determine the effectiveness of this process as a function of the ratio of the jet power to the Eddington luminosity of the black hole, the pressure of the interstellar medium, and the porosity of the dense gas.

Subfields: Astronomy and Astrophysics, Instrumentation, Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/6fa9a98d90085d6a612b78c5251fdbed810b6317

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Citations in the corpus

DRIVING OUTFLOWS WITH RELATIVISTIC JETS AND THE DEPENDENCE OF ACTIVE GALACTIC NUCLEUS FEEDBACK EFFICIENCY ON INTERSTELLAR MEDIUM INHOMOGENEITY (2012, methodology): “This hypothesis is supported by our previous three-dimensional hydrodynamical simulations of AGN-jetdriven outflows (Wagner & Bicknell 2011, WB11 henceforth).”
Relativistic jet feedback – III. Feedback on gas discs (2018, methodology): “The clouds follow a single point log-normal distribution and a two point power-law correlation with a Kolmogorov spectrum (Sutherland & Bicknell 2007; Wagner & Bicknell 2011; Mukherjee et al. 2016).”
Jet-induced star formation in gas-rich galaxies (2011, background): “Only recently, high resolution hydrodynamical simulations including a clumpy interstellar medium have become feasible (Sutherland & Bicknell 2007; Gaibler et al. 2011; Wagner & Bicknell 2011).”
The fast molecular outflow in the Seyfert galaxy IC 5063 as seen by ALMA (2015, methodology): “This illustrates that gas outflows are produced not only where the jet directly interacts with the ISM, but that the effects occur over a much larger volume therefore making its impact larger, as already shown by numerical simulations (e.g. Wagner & Bicknell 2011; Wagner et al. 2012).”
Relativistic jet feedback in high-redshift galaxies – I. Dynamics (2016, background): “However, only a few theoretical papers (Sutherland & Bicknell 2007; Gaibler, Khochfar & Krause 2011; Wagner & Bicknell 2011b; Gaibler et al. 2012; Wagner, Bicknell & Umemura 2012) have addressed the question of how a relativistic jet interacts with a multiphase ISM of the host galaxy, and over what…”
The current status of galaxy formation (2012, background): “This momentum deficit can be supplied by radio jet-driven outflows (Wagner & Bicknell, 2011), which also account for the observed high velocities of entrained cold gas (Wagner et al., 2012).”