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Related papers: Mergers Do Trigger AGNs out to z $\sim$ 0.6

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We use a novel method to predict the contribution of normal star-forming galaxies, merger-induced bursts, and obscured AGN, to IR luminosity functions (LFs) and global SFR densities. We use empirical halo occupation constraints to populate…

Cosmology and Nongalactic Astrophysics · Physics 2010-04-01 Philip F. Hopkins , Joshua D. Younger , Christopher C. Hayward , Desika Narayanan , Lars Hernquist

We use Horizon-AGN, a hydrodynamical cosmological simulation, to explore the role of mergers in the evolution of massive (M > 10^10 MSun) galaxies around the epoch of peak cosmic star formation (1<z<4). The fraction of massive galaxies in…

Astrophysics of Galaxies · Physics 2015-08-06 S. Kaviraj , J. Devriendt , Y. Dubois , A. Slyz , C. Welker , C. Pichon , S. Peirani , D. Le Borgne

The origins of the stellar-mass black hole mergers discovered by LIGO/Virgo are still unknown. Here we show that, if migration traps develop in the \add{accretion} disks of Active Galactic Nuclei (AGNs) and promote the mergers of their…

The origin of the Binary Black Hole (BBH) mergers detected through Gravitational Waves (GWs) by the LIGO-Virgo-KAGRA (LVK) collaboration remains debated. One fundamental reason is our ignorance of their host environment, as the typical size…

High Energy Astrophysical Phenomena · Physics 2022-05-24 Niccolò Veronesi , Elena Maria Rossi , Sjoert van Velzen , Riccardo Buscicchio

Double-peaked narrow emission lines in active galactic nucleus (AGN) spectra can be produced by AGN outflows, rotation, or dual AGNs, which are AGN pairs in ongoing galaxy mergers. Consequently, double-peaked narrow AGN emission lines are…

The merger of two or more galaxies can enhance the inflow of material from galactic scales into the close environments of Active Galactic Nuclei (AGN), obscuring and feeding the supermassive black hole (SMBH). Both recent simulations and…

Context. Via scaling relations, it is well-known that active galactic nuclei (AGN) and bulges are linked. This link was thought to be driven by mergers, but recent studies show that secular processes are the dominant mechanism of…

We present results from a multi-wavelength analysis searching for multiple AGN systems in nearby (z<0.077) triple galaxy mergers. Combining archival Chandra, SDSS, WISE, and VLA observations, we quantify the rate of nearby triple AGN, as…

High Energy Astrophysical Phenomena · Physics 2021-02-10 Adi Foord , Kayhan Gultekin , Jessie C. Runnoe , Michael J. Koss

Representing simultaneous black hole accretion during a merger, binary active galactic nuclei (AGNs) could provide valuable observational constraints to models of galaxy mergers and AGN triggering. High-resolution radio interferometer…

Astrophysics of Galaxies · Physics 2015-12-09 Hai Fu , J. M. Wrobel , A. D. Myers , S. G. Djorgovski , Lin Yan

The role of active galactic nuclei (AGNs) during galaxy interactions and how they influence the star formation in the system are still under debate. We use a sample of 1156 galaxies in galaxy pairs or mergers (hereafter `pairs') from the…

The dense and gaseous environments of active galactic nuclei (AGNs) can catalyze repeated mergers of stellar-mass black holes (BHs), potentially explaining the high-mass tail of binary black hole (BBH) mergers observed by LIGO-Virgo-KAGRA…

High Energy Astrophysical Phenomena · Physics 2025-08-22 Maria Paola Vaccaro

Merger events can trigger gas accretion onto supermassive black holes (SMBHs) located at the centre of galaxies, and form close pairs of AGN. The fraction of AGN in pairs offers critical insights into the dynamics of galaxy interactions,…

Major gas-rich mergers of galaxies are expected to play an important role in triggering and fuelling luminous AGN. We present deep multi-band (u/r/z) imaging and long slit spectroscopy of four double-peaked [OIII] emitting AGN, a class of…

Astrophysics of Galaxies · Physics 2015-06-23 C. Villforth , F. Hamann

Accretion disks in active galactic nuclei (AGN) are promising sites for mergers of stellar-mass black holes (BHs) detectable via gravitational waves (GWs). These environments facilitate both in-situ formation and dynamical capture of…

High Energy Astrophysical Phenomena · Physics 2026-04-08 Hiromichi Tagawa , Zoltán Haiman , Shigeo S. Kimura , Hassen M. Yesuf , Hengxiao Guo

While no consensus governs our understanding of the origin of low redshift radio galaxies, the possibility that mergers may trigger accretion from hot cluster halo gas has spurred a recent search for such signatures. Evidence for mergers is…

High Energy Astrophysical Phenomena · Physics 2019-12-24 David Garofalo

Statistical analyses based on the spatial correlation between the sky maps of Gravitational Wave (GW) events and the positions of potential host environments are a powerful tool to infer the origin of the black hole binary mergers that have…

High Energy Astrophysical Phenomena · Physics 2024-12-17 Niccolò Veronesi , Sjoert van Velzen , Elena Maria Rossi , Kate Storey-Fisher

The presence of dual active galactic nuclei (AGN) on scales of a few tens of kpc can be used to study merger-induced accretion on supermassive black holes (SMBHs) and offer insights about SMBH mergers, using dual AGNs as merger precursors.…

Astrophysics of Galaxies · Physics 2024-09-25 Vida Saeedzadeh , Arif Babul , Suvodip Mukherjee , Michael Tremmel , Thomas R. Quinn , Lucio Mayer

Galaxy mergers play a crucial role in shaping the morphology, the star formation, and the mass growth of galaxies across cosmic time. While mergers have been extensively investigated in the local Universe, the evolution of their frequency…

We present a new semi-analytic model for the common growth of black holes (BHs) and galaxies within a hierarchical Universe. The model is tuned to match the mass function of BHs at z=0 and the luminosity functions of active galactic nuclei…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-12 Eyal Neistein , Hagai Netzer

Galaxy mergers play an important role in many aspects of galaxy evolution, therefore, more accurate merger identifications are paramount for achieving a complete understanding of galaxy evolution. As we enter the era of very large imaging…

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