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

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Mergers of galaxies are thought to cause significant gas inflows to the inner parsecs, which can activate rapid accretion onto supermassive black holes (SMBHs), giving rise to Active Galactic Nuclei (AGN). During a significant fraction of…

High Energy Astrophysical Phenomena · Physics 2017-03-21 C. Ricci. , F. E. Bauer , E. Treister , K. Schawinski , G. C. Privon , L. Blecha , P. Arevalo , L. Armus , F. Harrison , L. C. Ho , K. Iwasawa , D. B. Sanders , D. Stern

We present a study of the influence of galaxy mergers on star formation at 0.3<z<2.5. Major mergers are selected from the CANDELS/3D-HST catalog using a peak-finding algorithm. Mergers have projected galaxy nuclei separation of their…

Dual active galactic nuclei (AGN) offer a unique opportunity to probe the relationship between super massive black holes (SMBH) and their host galaxies as well as the role of major mergers in triggering AGN activity. The confirmed dual AGN…

We examine the hypothesis that mergers and close encounters between galaxies can fuel AGNs by increasing the rate at which gas accretes towards the central black hole. We compare the clustering of galaxies around radio-loud AGNs with the…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-15 Hauke Worpel , Michael J. I. Brown , D. Heath Jones , David J. E. Floyd , Florian Beutler

The search for multi-messenger signals of binary black hole (BBH) mergers is crucial to understanding the merger process of BBH and the relative astrophysical environment. Considering BBH mergers occurring in the active galactic nuclei…

High Energy Astrophysical Phenomena · Physics 2023-11-07 Zi-Hang Zhou , Kai Wang

We investigate the connection between the most luminous active galactic nuclei (AGN), galaxy pairs, and post-mergers in the IllustrisTNG simulation. We select galaxy pairs and post-mergers with a mass ratio between 1:10 $< \mu <$ 1:1 and a…

Dual active galaxy nuclei (dAGNs) trace the population of post-merger galaxies and are the precursors to massive black hole (MBH) mergers, an important source of gravitational waves that may be observed by LISA. In Paper I of this series,…

Astrophysics of Galaxies · Physics 2022-07-29 Kunyang Li , Tamara Bogdanović , David R. Ballantyne , Matteo Bonetti

Extragalactic starbursts induced by gravitational interactions can now be studied from z = ~0 to ~2. The evidence that mergers of gas-rich galaxies tend to trigger galaxy-wide starbursts is strong, both statistically and in individual cases…

Astrophysics · Physics 2015-11-11 Francois Schweizer

We present a systematic search for spatial association between a high confidence sample of 3,166 morphologically selected galaxy mergers drawn from the initial convolutional neural network (CNN) catalog of 328,151 candidate mergers and…

High Energy Astrophysical Phenomena · Physics 2025-09-15 Siddhant Manna , Shantanu Desai

The study of heavily obscured supermassive black hole (SMBH) growth in late-stage galaxy mergers is challenging: column densities $N_{\mathrm{H}}>10^{24},\mathrm{cm}^{-2}$ can block most nuclear emission, leaving significant gaps in the…

Star clusters (SCs) and active galactic nuclei (AGNs) are promising sites for the occurrence of hierarchical black hole (BH) mergers. We use simple models to compare hierarchical BH mergers in two of the dynamical formation channels. We…

High Energy Astrophysical Phenomena · Physics 2025-04-30 Guo-Peng Li , Da-Bin Lin , Yong Yuan

Gravitational waves from neutron star mergers have long been considered a promising way to measure the Hubble constant, $H_0$, which describes the local expansion rate of the universe. While black hole mergers are more abundantly observed,…

High Energy Astrophysical Phenomena · Physics 2024-06-21 Lucas M. B. Alves , Andrew G. Sullivan , Yang Yang , Gayathri V. , Zsuzsa Marka , Szabolcs Marka , Imre Bartos

The incidence and properties of Active Galactic Nuclei (AGN) in the field, groups, and clusters can provide new information about how these objects are triggered and fueled, similar to how these environments have been employed to study…

Cosmology and Nongalactic Astrophysics · Physics 2014-11-20 Timothy J. Arnold , Paul Martini , John S. Mulchaey , Angela Berti , Tesla E. Jeltema

The growing number of stellar-mass binary black hole mergers discovered by Advanced LIGO and Advanced Virgo are starting to constrain the binaries' origin and environment. However, we still lack sufficiently accurate modeling of binary…

High Energy Astrophysical Phenomena · Physics 2019-05-15 Y. Yang , I. Bartos , Z. Haiman , B. Kocsis , Z. Marka , N. C. Stone , S. Marka

We report the discovery of a spectroscopically confirmed z = 1.824 minor merger with a mass ratio of ~35:1 in which the secondary (smaller) galaxy hosts a luminous AGN. The system is identified in the 3D-HST survey and exhibits clear tidal…

High Energy Astrophysical Phenomena · Physics 2026-05-25 Marko Mićić

We investigate the possible link between mergers and the enhanced activity of supermassive black holes (SMBHs) at the centre of galaxies, by comparing the merger fraction of a local sample (0.003 =< z < 0.03) of active galaxies - 59 active…

There is much debate about the channels for astrophysical origins of the stellar-mass binary black hole (BBH) mergers detected by LIGO and Virgo. Active galactic nuclei (AGNs) are promising sites for the efficient formation and rapid…

High Energy Astrophysical Phenomena · Physics 2025-04-30 Guo-Peng Li

The role of feedback in triggering or quenching star formation and hence driving galaxy evolution can be directly studied with high resolution integral field observations. The manifestation of feedback in shocks is particularly important to…

Inspiraling and merging binary neutron stars (BNSs) are important sources of both gravitational waves and coincident electromagnetic counterparts. If the BNS total mass is larger than a threshold value, a black hole ensues promptly after…

High Energy Astrophysical Phenomena · Physics 2019-08-06 Vasileios Paschalidis , Milton Ruiz

Galaxy mergers play a crucial role in the formation of massive galaxies and the buildup of their bulges. An important aspect of the merging process is the in-spiral of the supermassive black-holes (SMBHs) to the centre of the merger remnant…

Astrophysics of Galaxies · Physics 2017-08-04 M. Das , K. Rubinur , P. Kharb , A. Varghese , K. Navyasree , A. James