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During a stellar tidal disruption event (TDE), an accretion disk forms as stellar debris returns to the disruption site and circularizes. Rather than being confined within the circularizing radius, the disk can spread to larger radii to…

High Energy Astrophysical Phenomena · Physics 2014-03-11 Rong-Feng Shen , Christopher D. Matzner

After the Tidal Disruption Event (TDE) of a star around a SuperMassive Black Hole (SMBH), the bound stellar debris rapidly forms an accretion disk. If the accretion disk is not aligned with the spinning SMBH's equatorial plane, the disk…

High Energy Astrophysical Phenomena · Physics 2019-06-12 J. J. Zanazzi , Dong Lai

Stars embedded in active galactic nucleus (AGN) disks or captured by them may scatter onto the supermassive black hole (SMBH), leading to a tidal disruption event (TDE). Using the moving-mesh hydrodynamics simulations with {\small AREPO},…

High Energy Astrophysical Phenomena · Physics 2023-10-03 Taeho Ryu , Barry McKernan , Saavik Ford , Matteo Cantiello , Matthew Graham , Daniel Stern , Nathan W. C Leigh

When a star passes close to a supermassive black hole (BH), the BH's tidal forces rip it apart into a thin stream, leading to a tidal disruption event (TDE). In this work, we study the post-disruption phase of TDEs in general relativistic…

High Energy Astrophysical Phenomena · Physics 2021-12-15 Zachary L. Andalman , Matthew T. P. Liska , Alexander Tchekhovskoy , Eric R. Coughlin , Nicholas Stone

Stars in the immediate vicinity of supermassive black holes (SMBHs) can be ripped apart by the tidal forces of the black hole. The subsequent accretion of the stellar material causes a spectacular flare of electromagnetic radiation. Here,…

High Energy Astrophysical Phenomena · Physics 2015-05-06 S. Komossa

A tidal disruption event (TDE) ensues when a star passes too close to the supermassive black hole (SMBH) in a galactic center and is ripped apart by the tidal field of the SMBH. The gaseous debris produced in a TDE can power a bright…

High Energy Astrophysical Phenomena · Physics 2019-02-20 Nicholas C. Stone , Michael Kesden , Roseanne M. Cheng , Sjoert van Velzen

A tidal disruption event (TDE) occurs when a star wanders close enough to a black hole to be disrupted by its tidal force. The debris of a tidally disrupted star are expected to form an accretion disc around the supermassive black hole. The…

High Energy Astrophysical Phenomena · Physics 2015-12-09 A. Franchini , G. Lodato , S. Facchini

The tidal disruption event (TDE) AT2022cmc represents the fourth known example of a relativistic jet produced by the tidal disruption of a stray star providing a unique probe of the formation and evolution of relativistic jets in otherwise…

High Energy Astrophysical Phenomena · Physics 2024-12-31 T. Eftekhari , A. Tchekhovskoy , K. D. Alexander , E. Berger , R. Chornock , T. Laskar , R. Margutti , Y. Yao , Y. Cendes , S. Gomez , A. Hajela , D. R. Pasham

The transient Swift J1644+57 is believed to have been produced by an unlucky star wandering too close to a supermassive black hole (BH) leading to a tidal disruption event. This unusual flare displayed highly super-Eddington X-ray emission…

High Energy Astrophysical Phenomena · Physics 2015-06-23 Luke Zoltan Kelley , Alexander Tchekhovskoy , Ramesh Narayan

Tidal disruption events (TDEs) in active galactic nuclei (AGNs) mark a regime where traditional vacuum models fail to capture the full dynamics, especially due to interaction between stellar debris and pre-existing accretion disks. We…

High Energy Astrophysical Phenomena · Physics 2025-10-10 Minghao Zhang , Wenda Zhang , Hongping Deng , Hengxiao Guo , Jingbo Sun

A fraction of tidal disruption events (TDEs) occur in active galactic nuclei (AGNs) whose black holes possess accretion disks; these TDEs can be confused with common AGN flares. The disruption itself is unaffected by the disk, but the…

High Energy Astrophysical Phenomena · Physics 2020-01-24 Chi-Ho Chan , Tsvi Piran , Julian H. Krolik , Dekel Saban

CSS100217 is considered a peculiar tidal disruption event (TDE) candidate occurring in an active galactic nucleus (AGN). Unlike typical TDEs, where the post-flare luminosity is equal to that pre-flare, CSS100217 decayed to $\sim$ 0.4…

High Energy Astrophysical Phenomena · Physics 2025-10-01 Ying Gu , Xiao Li , Xing-Qian Cheng , Dou-Dou Wang , Xue-Guang Zhang , En-Wei Liang

A tidal disruption event (TDE) occurs when a star passes within the tidal radius of a supermassive black hole (SMBH). In TDEs it is expected that the orbital angular momentum of the disrupted star is generally misaligned with the SMBH spin…

High Energy Astrophysical Phenomena · Physics 2026-04-29 Jin-Hong Chen , Lixin Dai , Kan Cheuk Kwan , Tom Man Kwan , Zijian Zhang

A tidal disruption event (TDE) may occur when a star is torn apart by the tidal force of a black hole (BH). Eventually, an accretion disc is thought to form out of stellar debris falling back towards the BH. If the star's orbital angular…

High Energy Astrophysical Phenomena · Physics 2024-05-14 Z. Cao , P. G. Jonker , D. R. Pasham , S. Wen , N. C. Stone , A. I. Zabludoff

Tidal disruption events (TDEs) can uncover the quiescent supermassive black holes (SMBHs) at the center of galaxies. After the disruption of a star by a SMBH, the highly elliptical orbit of the debris stream will be gradually circularized…

High Energy Astrophysical Phenomena · Physics 2023-09-08 Jin-Hong Chen , Li-Ming Dou , Rong-Feng Shen

A star coming too close to a supermassive black hole gets disrupted by the tidal force of the compact object in a tidal disruption event, or TDE. Following this encounter, the debris evolves into an elongated stream, half of which coming…

High Energy Astrophysical Phenomena · Physics 2020-05-13 Clément Bonnerot , Wenbin Lu

An encounter between a passing star and a massive black hole at the centre of a galaxy, a so-called tidal disruption event or TDE, may leave a debris disc that subsequently accretes onto the hole. We solve for the time evolution of such a…

High Energy Astrophysical Phenomena · Physics 2018-09-19 Steven A. Balbus , Andrew Mummery

We report results from general relativistic radiation MHD (GRRMHD) simulations of a super-Eddington black hole (BH) accretion disk formed as a result of a tidal disruption event (TDE). We consider the fiducial case of a solar mass star on a…

High Energy Astrophysical Phenomena · Physics 2018-11-19 Brandon Curd , Ramesh Narayan

The cooling envelope model for tidal disruption events (TDE) postulates that while the stellar debris streams rapidly dissipate their bulk kinetic energy (``circularize"), this does not necessarily imply rapid feeding of the supermassive…

High Energy Astrophysical Phenomena · Physics 2024-01-22 Nikhil Sarin , Brian D. Metzger

We construct a time-dependent relativistic accretion model for tidal disruption events (TDEs) with an $\alpha-$viscosity and the pressure dominated by gas pressure. We also include the mass fallback rate $\dot{M}_f$ for both full and…

High Energy Astrophysical Phenomena · Physics 2020-06-17 T. Mageshwaran , Sudip Bhattacharyya
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