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We study the circularization of tidally disrupted stars on bound orbits around spinning supermassive black holes by performing three-dimensional smoothed particle hydrodynamic simulations with Post-Newtonian corrections. Our simulations…

High Energy Astrophysical Phenomena · Physics 2016-09-09 Kimitake Hayasaki , Nicholas C. Stone , Abraham Loeb

A star crossing the tidal radius of a supermassive black hole will be spectacularly ripped apart with an accompanying burst of radiation. A few tens of such tidal disruption events (TDEs) have now been identified in the optical wavelengths,…

We use the general relativistic radiation magnetohydrodynamics code \verb=KORAL= to simulate the early stages of accretion disk formation resulting from the tidal disruption of a solar mass star around a super massive black hole (BH) of…

High Energy Astrophysical Phenomena · Physics 2021-08-11 Brandon Curd

Stars in galactic centers are occasionally scattered so close to the central supermassive black hole that they are completely disrupted by tidal forces, initiating a transient accretion event. The aftermath of such a tidal disruption event…

High Energy Astrophysical Phenomena · Physics 2025-03-19 Andrew Mummery , Muryel Guolo , James Matthews , Megan Newsome , Chris Lintott , William Keel

In a dense stellar environment, such as the core of a globular cluster (GC), dynamical interactions with black holes (BHs) are expected to lead to a variety of astrophysical transients. Here we explore tidal disruption events (TDEs) of…

High Energy Astrophysical Phenomena · Physics 2019-08-21 Kyle Kremer , Wenbin Lu , Carl L. Rodriguez , Mitchell Lachat , Frederic Rasio

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

Observational evidence suggests that the majority of stars may have been born in stellar clusters or associations. Within these dense environments, dynamical interactions lead to high rates of close stellar encounters. A variety of recent…

High Energy Astrophysical Phenomena · Physics 2021-04-28 Kyle Kremer , Wenbin Lu , Anthony L. Piro , Sourav Chatterjee , Frederic A. Rasio , Claire S. Ye

Highly eccentric binary systems appear in many astrophysical contexts, ranging from tidal capture in dense star clusters, precursors of stellar disruption by massive black holes, to high-eccentricity migration of giant planets. In a highly…

Solar and Stellar Astrophysics · Physics 2018-02-14 Michelle Vick , Dong Lai

Eccentric white dwarf-massive black hole binaries can potentially source some extreme X-ray transients, including the recently observed quasi-periodic X-ray eruptions and tidal disruption events at the galactic nuclei. Meanwhile, they are…

High Energy Astrophysical Phenomena · Physics 2025-11-13 Shu Yan Lau , Hang Yu

Tidal forces close to massive black holes can violently disrupt stars that make a close approach. These extreme events are discovered via bright X-ray and optical/UV flares in galactic centers. Prior studies based on modeling decaying flux…

The orbital decay and tidal disruption of a star cluster in a galaxy is studied in an analytical manner. Owing to dynamical friction, the star cluster spirals in toward the center of the galaxy. Simultaneously, the galactic tidal field…

Astrophysics · Physics 2009-11-07 H. Mouri , Y. Taniguchi

We present and analyse a new tidal disruption event (TDE), AT2017eqx at redshift z=0.1089, discovered by Pan-STARRS and ATLAS. The position of the transient is consistent with the nucleus of its host galaxy; it peaks at a luminosity of $L…

In a galactic nucleus, a star on a low angular momentum orbit around the central massive black hole can be fully or partially disrupted by the black hole tidal field, lighting up the compact object via gas accretion. This phenomenon can…

High Energy Astrophysical Phenomena · Physics 2016-02-17 Deborah Mainetti , Alessandro Lupi , Sergio Campana , Monica Colpi

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

Sun-like stars are thought to be regularly disrupted by supermassive black holes (SMBHs) within galactic nuclei. Yet, as stars evolve off the main sequence their vulnerability to tidal disruption increases drastically as they develop a…

High Energy Astrophysical Phenomena · Physics 2015-06-05 Morgan MacLeod , James Guillochon , Enrico Ramirez-Ruiz

We perform a comprehensive study of the X-ray emission from 70 transient sources which have been classified as a tidal disruption event (TDE) in the literature. We explore the properties of these candidates using nearly three decades of…

High Energy Astrophysical Phenomena · Physics 2017-04-12 Katie Auchettl , James Guillochon , Enrico Ramirez-Ruiz

Several long, dynamically cold stellar streams have been observed around the Milky Way Galaxy, presumably formed from the tidal disruption of globular clusters. In integrable potentials---where all orbits are regular---tidal debris…

Tidal Disruption Events (TDEs) have recently been proposed as potential probes for Population III stars. However, the properties of the accretion flow and the wind from the Pop III star TDE system are not clear. By performing radiative…

High Energy Astrophysical Phenomena · Physics 2025-12-29 Yu-Heng Sheng , De-Fu Bu , Xiao-Hong Yang , Yi-Ren Chang , Liang Chen

Observations of tidal disruption events (TDEs) show signs of Nitrogen enrichment reminiscent of other astrophysical sources such as active galactic nuclei (AGN) and star-forming galaxies. Given that TDEs probe the gas from a single star, it…

High Energy Astrophysical Phenomena · Physics 2024-06-10 Brenna Mockler , Monica Gallegos-Garcia , Ylva Götberg , Jon Miller , Enrico Ramirez-Ruiz