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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

Tidal disruption events (TDEs) occur when a star is destroyed by a supermassive black hole at the center of a galaxy, temporarily increasing the accretion rate onto the black hole and producing a bright flare across the electromagnetic…

Following a tidal disruption event (TDE), the accretion rate can evolve from quiescent to near-Eddington levels and back over months - years timescales. This provides a unique opportunity to study the formation and evolution of the…

Statistics on tidal disruption events (TDEs) may be contaminated by repeating TDEs (rTDEs), which have been extensively discovered recently. However, the origin of rTDEs remains unclear. In addition, no statistical research on rTDEs with…

高能天体物理现象 · 物理学 2026-05-20 Yujun Yao , Luming Sun , Tao Wu , Ning Jiang , Shiyan Zhong , Xinwen Shu

Recent UV-optical surveys have been successful in finding tidal disruption events (TDEs), in which a star is tidally disrupted by a supermassive black hole (BH). These TDEs release a huge amount of radiation energy ~ 10^51-52 erg into the…

高能天体物理现象 · 物理学 2016-02-17 Wenbin Lu , Pawan Kumar , Neal J. Evans

We present late-time optical spectroscopy taken with the Large Binocular Telescope's Multi-Object Double Spectrograph, late-time SWIFT UVOT and XRT observations, as well as improved ASAS-SN pre-discovery limits on the nearby (d=90.3 Mpc,…

高能天体物理现象 · 物理学 2017-01-18 J. S. Brown , T. W. -S Holoien , K. Auchettl , K. Z. Stanek , C. S. Kochanek , B. J. Shappee , J. L. Prieto , D. Grupe

Observations of luminous flares resulting from the possible tidal disruption of stars by supermassive black holes have raised a number of puzzles. Outstanding questions include the origin of the optical and ultraviolet (UV) flux, the…

高能天体物理现象 · 物理学 2016-08-17 Nathaniel Roth , Daniel Kasen , James Guillochon , Enrico Ramirez-Ruiz

Tidal Disruption Events (TDEs) are astrophysical phenomena arising when stars are disrupted by supermassive black holes. The Vera C. Rubin Observatory Legacy Survey of Space and Time (LSST), with its unprecedented depth and cadence, will…

天体物理仪器与方法 · 物理学 2025-11-19 Kunal Bhardwaj , Asen Christov , Sergey Karpov

The tidal disruption event (TDE) AT2018fyk has unusual X-ray, UV, and optical light curves that decay over the first $\sim$600d, rebrighten, and decay again around 1200d. We explain this behavior as a one-off TDE associated with a massive…

高能天体物理现象 · 物理学 2024-07-30 S. Wen , P. G. Jonker , A. J. Levan , D. Li , N. C. Stone , A. I. Zabludoff , Z. Cao , T. Wevers , D. R. Pasham , C. Lewin , E. Kara

We perform a detailed numerical and analytical study of the properties of observed light curves from relativistic thin discs, focussing on observational bands most appropriate for comparison with tidal disruption events (TDEs). We make use…

高能天体物理现象 · 物理学 2020-01-29 Andrew Mummery , Steven A. Balbus

We present ground-based and Swift photometric and spectroscopic observations of the candidate tidal disruption event (TDE) ASASSN-14li, found at the center of PGC 043234 ($d\simeq90$ Mpc) by the All-Sky Automated Survey for SuperNovae…

This is a brief review of the recent progress in understanding the evolution of the accretion disks in tidal disruption events (TDEs). Special attention is paid to (1) thermal-viscous instability that causes the disk to transition from a…

高能天体物理现象 · 物理学 2025-05-13 Wenbin Lu

Models for tidal disruption events (TDEs) in which a supermassive black hole disrupts a star commonly assume that the highly eccentric streams of bound stellar debris promptly form a circular accretion disk at the pericenter scale. However,…

高能天体物理现象 · 物理学 2017-07-26 Gilad Svirski , Tsvi Piran , Julian Krolik

The mass of the central black hole in a galaxy that hosted a tidal disruption event (TDE) is an important parameter in understanding its energetics and dynamics. We present the first homogeneously measured black hole masses of a complete…

The past decade has experienced an explosive increase of optically-discovered tidal disruption events (TDEs) with the advent of modern time-domain surveys. However, we still lack a comprehensive observational view of their infrared (IR)…

星系天体物理 · 物理学 2021-04-21 Ning Jiang , Tinggui Wang , Xueyang Hu , Luming Sun , Liming Dou , Lin Xiao

We present two luminous UV/optical flares from the nuclei of apparently inactive early-type galaxies at z=0.37 and 0.33 that have the radiative properties of a flare from the tidal disruption of a star. In this paper we report the second…

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

A star entering the tidal sphere of a supermassive black hole (SMBH) can be partially stripped of mass, resulting in a partial tidal disruption event (TDE). Here we develop an analytical model for properties of these events, including the…

高能天体物理现象 · 物理学 2026-01-07 Ananya Bandopadhyay , Eric R. Coughlin , C. J. Nixon

Tidal Disruption Events (TDEs) occur when stars pass close to supermassive black holes, and have long been predicted to emit cosmic rays and neutrinos. Recently the TDE AT2109dsg was identified in spatial and temporal coincidence with…

高能天体物理现象 · 物理学 2021-10-06 Robert Stein