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Tidal disruption events (TDEs) occur when stars are destroyed by supermassive black holes and are among the brightest nuclear transients. It has been thought that strong relativistic effects rapidly dissipate orbital energy and produce…

High Energy Astrophysical Phenomena · Physics 2026-05-05 Ho-Sang Chan , Taeho Ryu , Julian Krolik , Tsvi Piran

A tidal disruption event (TDE) occurs when a star passes too close to a supermassive black hole and gets torn apart by its gravitational tidal field. After the disruption, the stellar debris form an expanding gaseous stream. The morphology…

High Energy Astrophysical Phenomena · Physics 2020-05-20 Andrea Sacchi , Giuseppe Lodato , Claudia Toci , Valentina Motta

The volumetric rate of tidal disruption events (TDEs) encodes information on the still-unknown demographics of central massive black holes (MBHs) in low-mass galaxies ($\lesssim 10^9$~M$_\odot$). Theoretical TDE rates from model galaxy…

Astrophysics of Galaxies · Physics 2024-07-16 Christian H. Hannah , Anil C. Seth , Nicholas C. Stone , Sjoert van Velzen

Most stars form and spend their early life in regions of enhanced stellar density. Therefore the evolution of protoplanetary discs (PPDs) hosted by such stars are subject to the influence of other members of the cluster. Physically, PPDs…

Solar and Stellar Astrophysics · Physics 2018-04-19 Andrew J. Winter , Cathie J. Clarke , Giovanni Rosotti , Jegug Ih , Stefano Facchini , Thomas J. Haworth

Geometrically thick disks may form after tidal disruption events, and rapid accretion may lead to short flares followed by long-term, lower-level emission. Using a novel accretion disk code which relies primarily on global conservation laws…

Astrophysics · Physics 2007-05-23 Andrew Ulmer

Tidal Disruption of stars by supermassive central black holes from dense rotating star clusters is modelled by high-accuracy direct N-body simulation. As in a previous paper on spherical star clusters we study the time evolution of the…

Astrophysics of Galaxies · Physics 2015-09-23 Shiyan Zhong , Peter Berczik , Rainer Spurzem

Stars that plunge into the center of a galaxy are tidally perturbed by a supermassive black hole (SMBH), with closer encounters resulting in larger perturbations. Exciting these tides comes at the expense of the star's orbital energy, which…

High Energy Astrophysical Phenomena · Physics 2023-01-18 M. Cufari , C. J. Nixon , Eric R. Coughlin

We show that main-sequence stars in dense stellar cusps around massive black holes are likely to rotate at a significant fraction of the centrifugal breakup velocity due to spin-up by hyperbolic tidal encounters. We use realistic stellar…

Astrophysics · Physics 2009-10-31 Tal Alexander , Pawan Kumar

The distribution of orbital energies imparted into stellar debris following the close encounter of a star with a supermassive black hole is the principal factor in determining the rate of return of debris to the black hole, and thus in…

High Energy Astrophysical Phenomena · Physics 2022-01-05 Sarah Norman , Chris Nixon , Eric R. Coughlin

A number of candidate repeating partial tidal disruption events (rpTDEs) have been reported in recent years. If these events are confirmed, the high fraction of observed rpTDEs among all tidal disruption events (TDEs) is in tension with…

High Energy Astrophysical Phenomena · Physics 2026-04-09 Zhen Pan , Dong Lai

The rate of tidal disruption events (TDEs) can vary by orders of magnitude depending on the environment and the mechanism that launches the stars towards the black hole's vicinity. For the largest rates, two disruptions can take place…

High Energy Astrophysical Phenomena · Physics 2019-01-23 Clément Bonnerot , Elena M. Rossi

Tidal disruption events (TDEs) occur when a star is disrupted by the tidal forces of a supermassive black hole, and these events produce bright multi-wavelength flares. Polarimetric measurements of TDEs allow us to disentangle the geometry…

Tidal disruption events (TDEs) are an important way to probe the properties of stellar populations surrounding supermassive black holes. Observed spectra of several TDEs, such as ASASSN-14li, show high nitrogen to carbon abundance ratios,…

Tidal disruption events (TDEs) can uncover the quiescent black holes (BHs) at the center of galaxies and also offer a promising method to study them. In a partial TDE (PTDE), the BH's tidal force cannot fully disrupt the star, so the…

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

Tidal disruption events (TDEs) are valuable probes of the demographics of supermassive black holes as well as the dynamics and population of stars in the centers of galaxies. In this Letter, we focus on studying how the debris disk…

High Energy Astrophysical Phenomena · Physics 2022-03-14 Thomas Hong Tsun Wong , Hugo Pfister , Lixin Dai

Tidal disruption events (TDEs) result from stars being gravitationally-scattered into low angular momentum orbits around massive black holes. We show that the short lifetimes of massive Population III stars at high redshifts could…

High Energy Astrophysical Phenomena · Physics 2024-11-19 Thomas H. T. Wong , George M. Fuller

The tidal destruction of a star by a massive black hole, known as a tidal disruption event (TDE), is commonly modeled using the "frozen-in" approximation. Under this approximation, the star maintains exact hydrostatic balance prior to…

High Energy Astrophysical Phenomena · Physics 2019-04-17 Elad Steinberg , Eric R. Coughlin , Nicholas C. Stone , Brian D. Metzger

When a star comes too close to a supermassive black hole, it gets torn apart by strong tidal forces in a tidal disruption event, or TDE. Half of the elongated stream of debris comes back to the stellar pericenter where relativistic apsidal…

High Energy Astrophysical Phenomena · Physics 2021-03-17 Clément Bonnerot , Wenbin Lu , Philip F. Hopkins

We have carried out general relativistic particle simulations of stars tidally disrupted by massive black holes. When a star is disrupted in a bound orbit with moderate eccentricity instead of a parabolic orbit, the temporal behavior of the…

High Energy Astrophysical Phenomena · Physics 2015-06-15 Lixin Dai , Andres Escala , Paolo Coppi

[abbreviated] We consider the problem of tidal disruption of a star by a super-massive Kerr black hole. Using a numerically fast Lagrangian model of the tidally disrupted star we survey the parameter space of the problem and find the…

Astrophysics · Physics 2009-11-11 P. B. Ivanov , M. A. Chernyakova
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