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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…

高能天体物理现象 · 物理学 2021-08-11 Brandon Curd

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…

高能天体物理现象 · 物理学 2020-05-13 Clément Bonnerot , Wenbin Lu

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…

高能天体物理现象 · 物理学 2018-11-19 Brandon Curd , Ramesh Narayan

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…

高能天体物理现象 · 物理学 2019-02-20 Nicholas C. Stone , Michael Kesden , Roseanne M. Cheng , Sjoert van Velzen

When a star passes through the tidal disruption radius of a massive black hole (BH), it can be torn apart by the tidal force of the BH, known as the Tidal Disruption Event (TDE). Since the observed UV/optical luminosity significantly…

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…

高能天体物理现象 · 物理学 2019-06-12 J. J. Zanazzi , Dong Lai

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…

高能天体物理现象 · 物理学 2014-03-11 Rong-Feng Shen , Christopher D. Matzner

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…

高能天体物理现象 · 物理学 2020-05-20 Andrea Sacchi , Giuseppe Lodato , Claudia Toci , Valentina Motta

When a star passes too close to a supermassive black hole, it gets disrupted by strong tidal forces. The stellar debris then evolves into an elongated stream of gas that partly falls back towards the black hole. We present an analytical…

高能天体物理现象 · 物理学 2022-08-18 Clément Bonnerot , Martin E. Pessah , Wenbin Lu

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…

高能天体物理现象 · 物理学 2020-01-24 Chi-Ho Chan , Tsvi Piran , Julian H. Krolik , Dekel Saban

We study how the matter dispersed when a supermassive black hole tidally disrupts a star joins an accretion flow. Combining a relativistic hydrodynamic simulation of the stellar disruption with a relativistic hydrodynamics simulation of the…

高能天体物理现象 · 物理学 2015-05-20 Hotaka Shiokawa , Julian H. Krolik , Roseanne M. Cheng , Tsvi Piran , Scott C. Noble

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…

高能天体物理现象 · 物理学 2021-12-09 Gauri Batra , Wenbin Lu , Clément Bonnerot , E. Sterl Phinney

Magnetically arrested accretion disks (MADs) around a rapidly rotating black hole (BH) have been proposed as a model for jetted tidal disruption events (TDEs). However, the stream and disk interact strongly at times, and this will lead to…

高能天体物理现象 · 物理学 2025-05-21 Brandon Curd , Richard Anantua , Hayley West , Joaquin Duran

A bright flare from a galactic nucleus followed at late times by a $t^{-5/3}$ decay in luminosity is often considered the signature of the complete tidal disruption of a star by a massive black hole. The flare and power-law decay are…

星系天体物理 · 物理学 2015-06-03 Christopher Evans , Pablo Laguna , Michael Eracleous

A tidal disruption event (TDE) occurs when a supermassive black hole disrupts a nearby passing star by tidal forces. The subsequent fallback accretion of the stellar debris results in a luminous transient outburst. Modeling the light curve…

高能天体物理现象 · 物理学 2023-03-29 Zsófia V. Kovács-Stermeczky , József Vinkó

Tidal disruption events (TDEs), events in which a star passes very close to a supermassive black hole, are generally imagined as leading either to the star's complete disruption or to its passage directly into the black hole. In the former…

高能天体物理现象 · 物理学 2020-12-02 Julian Krolik , Tsvi Piran , Taeho Ryu

Tidal disruption events (TDEs) are among the brightest transients in the optical, ultraviolet, and X-ray sky. These flares are set into motion when a star is torn apart by the tidal field of a massive black hole, triggering a chain of…

高能天体物理现象 · 物理学 2022-09-21 Elena M. Rossi , Nicholas C. Stone , Jamie A. P. Law-Smith , Morgan MacLeod , Giuseppe Lodato , Jane L. Dai , Ilya Mandel

We study accretion processes for tidally disrupted stars approaching supermassive black holes on bound orbits, by performing three dimensional Smoothed Particle Hydrodynamics simulations with a pseudo-Newtonian potential. We find that there…

高能天体物理现象 · 物理学 2015-06-11 Kimitake Hayasaki , Nicholas Stone , Abraham Loeb

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…

高能天体物理现象 · 物理学 2021-03-17 Clément Bonnerot , Wenbin Lu , Philip F. Hopkins

The disruption of a main-sequence star by a supermassive black hole results in the initial production of an extended debris stream that winds repeatedly around the black hole, producing a complex three-dimensional figure that may…

高能天体物理现象 · 物理学 2015-09-09 James Guillochon , Enrico Ramirez-Ruiz
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