Galaxy formation and evolution

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Studying the link between radio galaxies and AGN fuelling with relativistic hydrodynamic simulations of flickering jets

ArXiv 2305.19328 (2023)

Authors:

Henry W Whitehead, James H Matthews
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Studying the link between radio galaxies and AGN fuelling with relativistic hydrodynamic simulations of flickering jets

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 523:2 (2023) 2478-2497

Authors:

Henry W Whitehead, James H Matthews
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Synchrotron emission from double-peaked radio light curves of the symbiotic recurrent nova V3890 Sagitarii

Monthly Notices of the Royal Astronomical Society Oxford University Press (OUP) 523:2 (2023) 1661-1675

Authors:

Miriam M Nyamai, Justin D Linford, James R Allison, Laura Chomiuk, Patrick A Woudt, Valério ARM Ribeiro, Sumit K Sarbadhicary
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JADES + JEMS: A Detailed Look at the Buildup of Central Stellar Cores and Suppression of Star Formation in Galaxies at Redshifts 3 < z < 4.5

(2023)

Authors:

Zhiyuan Ji, Christina C Williams, Sandro Tacchella, Katherine A Suess, William M Baker, Stacey Alberts, Andrew J Bunker, Benjamin D Johnson, Brant Robertson, Fengwu Sun, Daniel J Eisenstein, Marcia Rieke, Michael V Maseda, Kevin Hainline, Ryan Hausen, George Rieke, Christopher NA Willmer, Eiichi Egami, Irene Shivaei, Stefano Carniani, Stephane Charlot, Jacopo Chevallard, Emma Curtis-Lake, Tobias J Looser, Roberto Maiolino, Chris Willott, Zuyi Chen, Jakob M Helton, Jianwei Lyu, Erica Nelson, Rachana Bhatawdekar, Kristan Boyett, Lester Sandles
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Population statistics of intermediate-mass black holes in dwarf galaxies using the newhorizon simulation

Monthly Notices of the Royal Astronomical Society Oxford University Press 523:4 (2023) 5610-5623

Authors:

Rs Beckmann, Y Dubois, M Volonteri, Ca Dong-Páez, M Trebitsch, Julien Devriendt, S Kaviraj, T Kimm, S Peirani

Abstract:

While it is well established that supermassive black holes (SMBHs) coevolve with their host galaxy, it is currently less clear how lower-mass black holes, so-called intermediate-mass black holes (IMBHs), evolve within their dwarf galaxy hosts. In this paper, we present results on the evolution of a large sample of IMBHs from the NEWHORIZON zoom volume, which has a radius of 10 comoving Mpc. We show that occupation fractions of IMBHs in dwarf galaxies are at least 50 per cent for galaxies with stellar masses down to 106 M☉, but BH growth is very limited in dwarf galaxies. In NEWHORIZON, IMBHs growth is somewhat more efficient at high redshift z = 3 but in general, IMBHs do not grow significantly until their host galaxy leaves the dwarf regime. As a result, NEWHORIZON underpredicts observed AGN luminosity function and AGN fractions. We show that the difficulties of IMBHs to remain attached to the centres of their host galaxies plays an important role in limiting their mass growth, and that this dynamic evolution away from galactic centres becomes stronger at lower redshift.
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