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Related papers: Supernova Explosions in Accretion Disks in Active …

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Active galactic nuclei (AGN) are prominent environments for stellar capture, growth and formation. These environments may catalyze stellar mergers and explosive transients, such as thermonuclear and core-collapse supernovae (SNe). SN…

High Energy Astrophysical Phenomena · Physics 2021-07-13 Evgeni Grishin , Alexey Bobrick , Ryosuke Hirai , Ilya Mandel , Hagai B. Perets

Supernova (SN) shocks that originate from stars on orbits embedded in dense active galactic nuclei (AGN) accretion disks evolve differently from those that occur in the interstellar medium. We aim to assess how shocks evolve in this dense…

High Energy Astrophysical Phenomena · Physics 2026-04-01 Harrison E. Cook , Wladimir Lyra , Mordecai-Mark Mac Low , K. E. Saavik Ford , Barry McKernan

Self-gravitating accretion disks collapse to star-forming(SF) regions extending to the inner edge of the dusty torus in active galactic nuclei (AGNs). A full set of equations including feedback of star formation is given to describe the…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-19 J. -M. Wang , C. -S. Yan , H. -Q. Gao , C. Hu , Y. -R. Li , S. Zhang

Astrophysical events that occur in active galactic nucleus (AGN) disks are believed to differ significantly from the ordinary in the interstellar medium. We show that stars located in the outer region of the AGN disk would explode near the…

High Energy Astrophysical Phenomena · Physics 2023-06-23 Fu-Lin Li , Yu Liu , Xiao Fan , Mao-Kai Hu , Xuan Yang , Jin-Jun Geng , Xue-Feng Wu

Some catastrophic stellar explosions, such as supernovae (SNe), compact binary coalescences, and micro-tidal disruption events, are believed to be embedded in the accretion disks of active galactic nuclei (AGN). We show high-energy…

High Energy Astrophysical Phenomena · Physics 2021-08-23 Jin-Ping Zhu , Kai Wang , Bing Zhang

The disks of Active Galactic Nuclei (AGNs) are expected to be populated by numerous stars, either formed in the outer regions of the disk via gravitational instability, or captured from the nearby nuclear star cluster. Regardless of their…

Astrophysics of Galaxies · Physics 2025-03-07 Gaia Fabj , Alexander J. Dittmann , Matteo Cantiello , Rosalba Perna , Johan Samsing

Disks of gas accreting onto supermassive black holes are thought to power active galactic nuclei (AGN). Stars may form in gravitationally unstable regions of these disks, or may be captured from nuclear star clusters. Because of the dense…

Astrophysics of Galaxies · Physics 2021-08-04 Alexander J. Dittmann , Matteo Cantiello , Adam S. Jermyn

White dwarfs (WDs) embedded in gaseous disks of active galactic nucleus (AGNs) can rapidly accrete materials from the disks and grow in mass to reach or even exceed the Chandrasekhar limit. Binary WD (BWD) mergers are also believed to occur…

High Energy Astrophysical Phenomena · Physics 2021-06-14 Jin-Ping Zhu , Yuan-Pei Yang , Bing Zhang , Liang-Duan Liu , Yun-Wei Yu , He Gao

It is widely believed that stellar-mass black holes (sMBHs) exist within the accretion disks of active galactic nuclei (AGN), forming a distinct population termed ``accretion-modified star" (AMS). Gas from the dense disk accretes onto these…

High Energy Astrophysical Phenomena · Physics 2026-02-27 Jun-Rong Liu , Jian-Min Wang , Hua Feng

Active galactic nuclei (AGN) are powered by the accretion of disks of gas onto supermassive black holes (SMBHs). Stars and stellar remnants orbiting the SMBH in the nuclear star cluster (NSC) will interact with the AGN disk. Orbiters…

Astrophysics of Galaxies · Physics 2020-11-02 Gaia Fabj , Syeda S. Nasim , Freddy Caban , K. E. Saavik Ford , Barry McKernan , Jillian M. Bellovary

Active galactic nucleus (AGN) disk provide dense environments to influence on the star formation, evolution, and migration. In AGN disks, pressure gradients and migration accelerations could create the anisotropy of the core-collapse…

High Energy Astrophysical Phenomena · Physics 2025-07-15 Jiao-Zhen She , Tong Liu , Bao-Quan Huang , Yun-Feng Wei , Fu-Lin Li , Jin-Jun Geng , Xue-Feng Wu

An increasing number of ambiguous nuclear transients, including some extreme nuclear transients with very shallow light-curve declines and weak AGN activity in their host galaxies, have been reported. Stars form in or are captured by AGN…

High Energy Astrophysical Phenomena · Physics 2025-11-27 Xiangli Lei , Qingwen Wu , Ya-Ping Li , Wei-Hua Lei

Aims: We investigate the suitability of {\alpha}-viscosity in self-similar models for self-gravitating disks with a focus on active galactic nuclei (AGN) disks. Methods: We use a self-similar approach to simplify the partial differential…

High Energy Astrophysical Phenomena · Physics 2016-03-16 Marcus Kubsch , T. F. Illenseer , W. J. Duschl

Active Galactic Nuclei are powered by geometrically-thin accretion disks surrounding a central supermassive black hole. Here we explore the evolution of stars embedded in these extreme astrophysical environments (AGN stars). Because AGN…

Solar and Stellar Astrophysics · Physics 2021-04-07 Matteo Cantiello , Adam S. Jermyn , Douglas N. C. Lin

The standard alpha-disc model predicts an anti-correlation between the density of the inner accretion disc and the black hole mass times square of the accretion rate, as seen in higher mass ($M_{\rm BH}>10^{6} M_{\odot}$) active galactic…

Stars embedded in the accretion disks of active galactic nuclei (AGN) can accrete rapidly from their surroundings, dramatically altering their structure and evolution. However, feedback from the release of gravitational potential energy and…

Solar and Stellar Astrophysics · Physics 2026-04-28 Alexander J. Dittmann , Matteo Cantiello

The innermost regions of Active Galactic Nuclei (AGN) are critical for understanding galaxy evolution and the dynamics of matter near a Supermassive Black Hole (SMBH). Yet, due to smaller angular projections, it is very difficult to resolve…

Astrophysics of Galaxies · Physics 2024-02-07 Vivek Kumar Jha

We consider the effect of a supernova (SN) explosion in a very massive binary that is expected to form in a portion of Population III stars with the mass higher than 100$M_\odot$. In a Population III binary system, a more massive star can…

Astrophysics · Physics 2009-11-13 Jun'ichi Sato , Masayuki Umemura , Keisuke Sawada

The disks of active galactic nuclei (AGNs) have emerged as a rich environment for the evolution of stars and their compact remnants. The very dense medium favors rapid accretion, while torques and migration traps enhance binary formation…

High Energy Astrophysical Phenomena · Physics 2021-07-07 Rosalba Perna , Hiromichi Tagawa , Zoltan Haiman , Imre Bartos

We examine the contribution of high-redshift (z>6) active galactic nuclei (AGNs) to cosmic hydrogen reionization, by tracing the growth and ionizing output of the first generation of supermassive black holes (SMBHs). Our calculations are…

Astrophysics of Galaxies · Physics 2022-04-20 Grisha Zeltyn , Benny Trakhtenbrot
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