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We consider Roche lobe overflow (RLO) from a low-mass star on a nearly circular orbit, onto a supermassive black hole (SMBH). If mass transfer is unstable, its rate accelerates in a runaway process, resulting in highly super-Eddington mass…

高能天体物理现象 · 物理学 2024-07-02 Itai Linial , Eliot Quataert

Tidal disruption events (TDEs) occur when a star enters the tidal radius of a supermassive black hole (SMBH). If the star only grazes the tidal radius, a fraction of the stellar mass will be accreted in a partial TDE (pTDE). The remainder…

Tidal disruption events (TDEs) occur when a star orbiting a massive black hole is sufficiently close to be tidally ripped apart by the black hole. AT 2022cmc is the first relativistic TDE that was observed (and discovered) as an optically…

高能天体物理现象 · 物理学 2023-02-08 Aleksandar Cikota , Giorgos Leloudas , Mattia Bulla , Lixin Dai , Justyn Maund , Igor Andreoni

Stars that orbit too close to a black hole can be ripped apart by strong tides, producing a type of luminous transient event called a ``tidal disruption event" (TDE). Tidal disruption events of stars by supermassive black holes (SMBHs)…

高能天体物理现象 · 物理学 2025-11-20 Brenna Mockler , Erica Hammerstein , Eric R. Coughlin , Matt Nicholl

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

Tidal disruption events (TDEs) are a class of transients that occur when a star is destroyed by the tides of a massive black hole (MBH). Their rates encode valuable MBH demographic information, but this can only be extracted if accurate TDE…

星系天体物理 · 物理学 2024-12-31 Christian H. Hannah , Nicholas C. Stone , Anil C. Seth , Sjoert van Velzen

Off-nuclear tidal disruption events (TDEs) provide a rare probe of massive black holes (MBHs) outside galactic nuclei. Only a handful are known, including five X-ray-selected candidates and two optically selected events. We present…

Once per 10,000-100,000 years, an unlucky star may experience a close encounter with a supermassive black hole (SMBH), partially or fully tearing apart the star in an exceedingly brief, bright interaction called a tidal disruption event…

Extreme tidal disruption events (eTDEs), which occur when a star passes very close to a supermassive black hole, may provide a way to observe a long-sought general relativistic effect: orbits that wind several times around a black hole and…

高能天体物理现象 · 物理学 2023-04-05 Taeho Ryu , Julian Krolik , Tsvi Piran

We present new observations with the Karl G. Jansky Very Large Array of seven X-ray-selected tidal disruption events (TDEs). The radio observations were carried out between 9 and 22 years after the initial X-ray discovery, and, thus, probe…

高能天体物理现象 · 物理学 2015-06-11 Geoffrey C. Bower , Brian D. Metzger , S. Bradley Cenko , Jeffrey M. Silverman , Joshua S. Bloom

We report the discovery of tidal disruption event (TDE) WFST250820mmsw/AT2025wet by the 2.5-meter Wide Field Survey Telescope (WFST). It exhibits a blue nuclear flare throughout the observed evolution with a g-band peak magnitude ~22, which…

A supermassive black hole can launch a relativistic jet when it violently disrupts a star that passes too close. Such jetted tidal disruption events (TDEs) are rare and unique tools to investigate quiescent supermassive black holes, jet…

高能天体物理现象 · 物理学 2024-01-25 Chang Zhou , Zi-Pei Zhu , Wei-Hua Lei , Shao-Yu Fu , Wei Xie , Dong Xu

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,…

A tidal disruption event (TDE) occurs when the gravitational field of a supermassive black hole (SMBH) destroys a star. For TDEs in which the star enters deep within the tidal radius, such that the ratio of the tidal radius to the…

高能天体物理现象 · 物理学 2022-11-16 Suman Kumar Kundu , Eric R. Coughlin , C. J. Nixon

The existence of optical-ultraviolet Tidal Disruption Events (TDEs) could be considered surprising because their electromagnetic output was originally predicted to be dominated by X-ray emission from an accretion disk. Yet over the last…

高能天体物理现象 · 物理学 2020-11-04 Sjoert van Velzen , Thomas W. -S. Holoien , Francesca Onori , Tiara Hung , Iair Arcavi

This article provides a summary of XMM-Newton highlights on stellar tidal disruption events. First found with ROSAT, ongoing and upcoming sky surveys will detect these events in the 1000s. In X- rays, tidal disruption events (TDEs) provide…

高能天体物理现象 · 物理学 2017-05-10 S. Komossa

Tidal Disruption Events (TDEs) are routinely observed in quiescent galaxies, as stars from the nuclear star cluster are scattered into the loss cone of the central supermassive black hole (SMBH). TDEs are also expected to occur in Active…

高能天体物理现象 · 物理学 2024-05-24 Chaitanya Prasad , Yihan Wang , Rosalba Perna , K. E. Saavik Ford , Barry McKernan

Tidal disruption events (TDEs), which occur when stars enter the tidal radii of supermassive black holes (SMBHs) and are subsequently torn apart by their tidal forces, represent intriguing phenomena that stimulate growing research interest…

We present observations of an extreme radio flare, VT J024345.70-284040.08, hereafter VT J0243, from the nucleus of a galaxy with evidence for historic Seyfert activity at redshift $z=0.074$. Between NRAO VLA Sky Survey observations in 1993…

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…

高能天体物理现象 · 物理学 2024-01-22 Nikhil Sarin , Brian D. Metzger