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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…

高能天体物理现象 · 物理学 2022-03-14 Thomas Hong Tsun Wong , Hugo Pfister , Lixin Dai

We present detailed radio observations of the tidal disruption event (TDE) AT2019dsg, obtained with the Very Large Array (VLA) and the Atacama Large Millimeter/submillimeter Array (ALMA), and spanning $55-560$ days post-disruption. We find…

高能天体物理现象 · 物理学 2021-10-13 Y. Cendes , K. D. Alexander , E. Berger , T. Eftekhari , P. K. G. Williams , R. Chornock

Massive black hole binaries (MBHBs) are a natural byproduct of galaxy mergers. Previous studies have shown that flares from stellar tidal disruption events (TDEs) are modified by the presence of a secondary perturber, causing interruptions…

高能天体物理现象 · 物理学 2016-02-24 Angelo Ricarte , Priyamvada Natarajan , Lixin Dai , Paolo Coppi

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

In the past few years wide-field optical and UV transient surveys as well as X-ray telescopes have allowed us to identify a few dozen candidate tidal disruption events (TDEs). While in theory the physical processes in TDEs are expected to…

高能天体物理现象 · 物理学 2018-06-13 Lixin Dai , Jonathan C. McKinney , Nathaniel Roth , Enrico Ramirez-Ruiz , M. Coleman Miller

Tidal disruption events (TDEs) in active galactic nuclei (AGNs) mark a regime where traditional vacuum models fail to capture the full dynamics, especially due to interaction between stellar debris and pre-existing accretion disks. We…

高能天体物理现象 · 物理学 2025-10-10 Minghao Zhang , Wenda Zhang , Hongping Deng , Hengxiao Guo , Jingbo Sun

Observations of the spectacular, blazar-like tidal disruption event (TDE) candidates Swift J1644+57 and J2058+05 show that the conditions required for accelerating protons to 10^{20} eV appear to be realized in the outer jet, and possibly…

高能天体物理现象 · 物理学 2014-11-05 Glennys R. Farrar , Tsvi Piran

We survey the properties of stars destroyed in TDEs as a function of BH mass, stellar mass and evolutionary state, star formation history and redshift. For Mbh<10^7Msun, the typical TDE is due to a M*~0.3Msun M-dwarf, although the mass…

高能天体物理现象 · 物理学 2016-06-08 C. S. Kochanek

A star that wanders too close to a massive black hole (BH) is shredded by the BH's tidal gravity. Stellar gas falls back to the BH, releasing a flare of energy. In anticipation of upcoming transient surveys, we predict the light curves and…

宇宙学与河外天体物理 · 物理学 2015-05-13 Linda E. Strubbe , Eliot Quataert

A late (t $\sim$ 1,500 days) multi-wavelength (UV, optical, IR, and X-ray) flare was found in PS1-10adi, a tidal disruption event (TDE) candidate that took place in an active galactic nucleus (AGN). TDEs usually involve super-Eddington…

高能天体物理现象 · 物理学 2023-09-08 Jialun Zhuang , Rong-Feng Shen

We describe a model of tidal disruption events (TDEs) with input physical parameters that include the black hole (BH) mass $M_{\bullet}$, the specific orbital energy $E$, the angular momentum $J$, the star mass $M_{\star}$ and radius…

高能天体物理现象 · 物理学 2017-11-16 A. Mangalam , T. Mageshwaran

UV and optically selected candidates for stellar tidal disruption events (TDE) often exhibit broad spectral features (HeII emission, H$\alpha$ emission, or absorption lines) on a blackbody-like continuum (1e4K<T<1e5K). The lines presumably…

高能天体物理现象 · 物理学 2018-01-10 Curtis J. Saxton , Hagai B. Perets , Alexei Baskin

We study the production of high energy neutrinos in jets from the tidal disruption of stars by supermassive black holes. The diffuse neutrino flux expected from these tidal disruption events (TDEs) is calculated both analytically and…

高能天体物理现象 · 物理学 2017-06-07 Cecilia Lunardini , Walter Winter

Massive black holes at galaxy center may tear apart a star when the star passes occasionally within the disruption radius, which is the so-called tidal disruption event(TDE). Most TDEs radiate with thermal emission resulted from the…

高能天体物理现象 · 物理学 2016-07-06 Fang-Kun Peng , Qing-Wen Tang , Xiang-Yu Wang

Tidal disruption events (TDEs) occur when a star is disrupted by the tidal forces of a supermassive black hole (SMBH), producing bright multi-wavelength flares. Among these events, AT2020mot has so far exhibited the highest recorded optical…

Momentum deposition by radiation pressure from young, massive stars may help to destroy molecular clouds and unbind stellar clusters by driving large-scale outflows. We extend our previous numerical radiation hydrodynamic study of…

星系天体物理 · 物理学 2017-12-06 Sudhir Raskutti , Eve C. Ostriker , M. Aaron Skinner

We explore the contributions of Tidal Disruption Events (TDEs) to the flares in Active Galactic Nuclei (AGN) at high redshifts. Using the latest data available from X-ray and optical observations of high-redshift galaxies, in combination…

星系天体物理 · 物理学 2021-12-08 Hamsa Padmanabhan , Abraham Loeb

TDEs have been observed in the optical and UV for more than a decade but the underlying emission mechanism still remains a puzzle. It has been suggested that viewing angle effects could potentially explain their large photometric and…

高能天体物理现象 · 物理学 2023-02-22 Panos Charalampopoulos , Mattia Bulla , Clement Bonnerot , Giorgos Leloudas