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Accretion of stars on massive black holes (MBHs) can feed MBHs and generate tidal disruption events (TDEs). We introduce a new physically motivated model to self-consistently treat TDEs in cosmological simulations, and apply it to the…

Astrophysics of Galaxies · Physics 2020-11-25 Hugo Pfister , Jane Dai , Marta Volonteri , Katie Auchettl , Maxime Trebitsch , Enrico Ramirez-Ruiz

In nuclei of galaxies strong tidal forces can destroy stars passing within a critical distance from the central super-massive black hole (SMBH). Observational signatures of tidal disruption events (TDEs) depend on the environment around the…

High Energy Astrophysical Phenomena · Physics 2019-10-29 Marcel Stolc , Vladimir Karas

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

Many astrophysical environments, from star clusters and globular clusters to the disks of Active Galactic Nuclei, are characterized by frequent interactions between stars and the compact objects that they leave behind. Here, using a suite…

High Energy Astrophysical Phenomena · Physics 2022-08-31 Taeho Ryu , Rosalba Perna , Yihan Wang

During a tidal disruption event (TDE) the stream debris inherits the magnetic field of the star. As the stream stretches, the magnetic field evolves and can eventually become dynamically important. We study this effect by means of…

High Energy Astrophysical Phenomena · Physics 2025-12-01 Simona Pacuraru , Clément Bonnerot , Martin E. Pessah

In our Galactic Center, about 10,000 to 100,000 stars are estimated to have survived tidal disruption events, resulting in partially disrupted remnants. These events occur when a supermassive black hole (SMBH) tidally interacts with a star,…

High Energy Astrophysical Phenomena · Physics 2024-03-08 Megha Sharma , Daniel J. Price , Alexander Heger

The tidal disruption of a star by a supermassive black hole is expected to lead to a short bright flare followed by an extended period of low-level emission. Existing models of the late-time accretion of the stellar debris via a thin disk…

Astrophysics · Physics 2009-11-07 Kristen Menou , Eliot Quataert

When a star is tidally disrupted by a supermassive black hole (BH), the gas debris is stretched into an elongated stream. The longitudinal motion of the stream follows geodesics in the Kerr spacetime and the evolution in the transverse…

High Energy Astrophysical Phenomena · Physics 2021-12-09 Gauri Batra , Wenbin Lu , Clément Bonnerot , E. Sterl Phinney

The rate of tidal disruption events (TDEs), $R_\text{TDE}$, is predicted to depend on stellar conditions near the super-massive black hole (SMBH), which are on difficult-to-measure sub-parsec scales. We test whether $R_\text{TDE}$ depends…

High Energy Astrophysical Phenomena · Physics 2018-02-07 Or Graur , K. Decker French , H. Jabran Zahid , James Guillochon , Kaisey S. Mandel , Katie Auchettl , Ann I. Zabludoff

In this paper, the third in this series, we continue our study of tidal disruption events of main-sequence stars by a non-spinning $10^{6}~\rm{M}_\odot$ supermassive black hole. Here we focus on the stellar mass dependence of the outcomes…

High Energy Astrophysical Phenomena · Physics 2020-12-02 Taeho Ryu , Julian Krolik , Tsvi Piran , Scott C. Noble

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 disruptions of stars by supermassive black holes produce multi-wavelength emission, of which the optical emission is of ambiguous origin. A unification scenario of tidal disruption events (TDEs) has been proposed to explain the…

Tidal disruption events which repeat on timescales of months-to-years represent an unambiguous signature of a partial disruption, with the surviving stellar remnant returning to pericentre to be repeatedly stripped by tidal forces. These…

High Energy Astrophysical Phenomena · Physics 2026-02-24 Andrew Mummery

Tidal disruption events (TDEs) observed in massive galaxies with inferred central black hole masses $M_h > 10^8 \ M_\odot$ are presumptive candidates for TDEs by lower mass secondaries in binary systems. We use hydrodynamic simulations to…

Astrophysics of Galaxies · Physics 2017-12-27 Eric R. Coughlin , Philip J. Armitage

Our current understanding of the curved space-time around supermassive black holes is based on actively accreting black holes, which make up only ten per cent or less of the overall population. X-ray observations of that small fraction…

High Energy Astrophysical Phenomena · Physics 2016-06-23 Erin Kara , Jon M. Miller , Chris Reynolds , Lixin Dai

A star orbiting a supermassive black hole can be tidally disrupted if the black hole's gravitational tidal field exceeds the star's self gravity at pericenter. Some of this stellar tidal debris can become gravitationally bound to the black…

Cosmology and Nongalactic Astrophysics · Physics 2015-03-20 Michael Kesden

A star destroyed by a supermassive black hole (SMBH) in a tidal disruption event (TDE) enables the study of SMBHs. We propose that the distance within which a star is completely destroyed by a SMBH, defined $r_{\rm t, c}$, is accurately…

High Energy Astrophysical Phenomena · Physics 2022-09-21 Eric R. Coughlin , Chris Nixon

Stars can be tidally destroyed or swallowed by supermassive black hole binaries. Using a large number of accurate few-body simulations, we investigate the enhancement and suppression of full and partial disruption and direct capture events…

High Energy Astrophysical Phenomena · Physics 2022-08-03 Taeho Ryu , Alessandro A. Trani , Nathan W. C. Leigh

We examine the consequences of a model in which relativistic jets can be triggered in quiescent massive black holes when a geometrically thick and hot accretion disk forms as a result of the tidal disruption of a star. To estimate the…

High Energy Astrophysical Phenomena · Physics 2015-06-05 Fabio De Colle , James Guillochon , Jill Naiman , Enrico Ramirez-Ruiz

A tidal disruption event (TDE) occurs when a star travels too close to a supermassive black hole. In some cases, accretion of the disrupted material onto the black hole launches a relativistic jet. In this paper, we present a long term…