English
Related papers

Related papers: PS18kh: A New Tidal Disruption Event with a Non-Ax…

200 papers

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…

AT2018cqh is a unique tidal disruption event (TDE) candidate discovered in a dwarf galaxy. Both the light curve fitting and galaxy scaling relationships suggest a central black hole mass in the range of 5.9<logM_BH/M_sun<6.4. A delayed…

High Energy Astrophysical Phenomena · Physics 2024-01-12 Fabao Zhang , Xinwen Shu , Lei Yang , Luming Sun , Zhumao Zhang , Yibo Wang , Guobin Mou , Xue-Guang Zhang , Tianyao Zhou , Fangkun Peng

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…

High Energy Astrophysical Phenomena · Physics 2025-05-13 Wenbin Lu

We present radio observations of the tidal disruption event candidate (TDE) XMMSL1 J0740$-$85 spanning 592 to 875 d post X-ray discovery. We detect radio emission that fades from an initial peak flux density at 1.6 GHz of $1.19\pm 0.06$ mJy…

High Energy Astrophysical Phenomena · Physics 2017-03-22 K. D. Alexander , M. H. Wieringa , E. Berger , R. D. Saxton , S. Komossa

We present the results from an extensive follow-up campaign of the Tidal Disruption Event (TDE) ASASSN-15oi spanning $\delta t \sim 10 - 3000$ d, offering an unprecedented window into the multiwavelength properties of a TDE during its first…

Liu and collaborators recently proposed an elliptical accretion disk model for tidal disruption events (TDEs). They showed that the accretion disks of optical/UV TDEs are large and highly eccentric and suggested that the broad optical…

High Energy Astrophysical Phenomena · Physics 2021-02-10 Z. Q. Zhou , F. K. Liu , S. Komossa , R. Cao , L. C. Ho , Xian Chen , Shuo Li

Tidal disruption events (TDEs) taking place in active galactic nuclei (AGNs) are different from ordinary TDEs. In these events, the returning tidal debris stream drills through the pre-existing AGN accretion disk near the stream pericenter,…

High Energy Astrophysical Phenomena · Physics 2022-01-10 Chi-Ho Chan , Tsvi Piran , Julian H. Krolik

A tidal disruption event (TDE) occurs when a supermassive black hole rips apart a passing star. Part of the stellar material falls toward the black hole, forming an accretion disk that in some cases launches a relativistic jet. We performed…

We argue that the `changing look' AGN recently reported by LaMassa et al. could be a luminous flare produced by the tidal disruption of a super-solar mass star passing just a few gravitational radii outside the event horizon of a $\sim 10^8…

High Energy Astrophysical Phenomena · Physics 2015-08-06 A. Merloni , T. Dwelly , M. Salvato , A. Georgakakis , J. Greiner , M. Krumpe , K. Nandra , G. Ponti , A. Rau

A star wandering too close to a supermassive black hole (SMBH) will be tidally disrupted. Previous studies of such "tidal disruption event" (TDE) mostly focus on the stellar debris that are bound to the system, because they give rise to…

High Energy Astrophysical Phenomena · Physics 2016-03-09 Xian Chen , Germán Gómez-Vargas , James Guillochon

A black hole (BH) can tear apart a star that ventures within its tidal radius, producing a luminous flare as the stellar debris falls back, known as a tidal disruption event (TDE). While TDEs in quiescent galaxies are relatively well…

We present the optical discovery and multiwavelength follow-up observations of AT2024kmq, a likely tidal disruption event (TDE) associated with a supermassive ($M_{\rm BH}\sim 10^{8} M_\odot$) black hole in a massive galaxy at $z=0.192$.…

We study X-ray bright tidal disruption events (TDE), close to the peak of their emission, with the intention of understanding the evolution of their light curves and spectra. Candidate TDE are identified by searching for soft X-ray flares…

Astrophysics of Galaxies · Physics 2017-02-01 R. D. Saxton , A. M. Read , S. Komossa , P. Lira , K. D. Alexander , M. H. Wieringa

We present general relativistic radiation magnetohydrodynamics (GRRMHD) simulations of super-Eddington accretion flows around supermassive black holes (SMBHs) which may apply to tidal disruption events (TDEs). We perform long duration…

High Energy Astrophysical Phenomena · Physics 2022-12-28 Brandon Curd , Razieh Emami , Richard Anantua , Daniel Palumbo , Sheperd Doeleman , Ramesh Narayan

We perform a comprehensive analysis of a population of 19 X-ray bright tidal disruption events (TDEs), fitting their X-ray spectra with a new, physically self consistent, relativistic accretion disc model. Not all of the TDEs inhabit…

High Energy Astrophysical Phenomena · Physics 2023-01-19 Andrew Mummery , Thomas Wevers , Richard Saxton , Dheeraj Pasham

The tidal disruption event by a supermassive black hole in Swift J1644+57 can trigger limit-cycle oscillations between a supercritically accreting X-ray bright state and a subcritically accreting X-ray dim state. Time evolution of the…

High Energy Astrophysical Phenomena · Physics 2015-06-16 Tomohisa Kawashima , Ken Ohsuga , Ryuichi Usui , Nobuyuki Kawai , Hitoshi Negoro , Ryoji Matsumoto

With a growing number of facilities able to monitor the entire sky and produce light curves with a cadence of days, in recent years there has been an increased rate of detection of sources whose variability deviates from standard behavior,…

Tidal disruption events (TDEs) occur when a star or sub-stellar object passes close enough to a galaxy's supermassive black hole to be disrupted by tidal forces. NGC 4845 (d=17 Mpc) was host to a TDE, IGR J12580+0134, detected in November…

We present observations of ASASSN-22ci (AT2022dbl), a nearby tidal disruption event (TDE) discovered by the All-Sky Automated Survey for Supernovae (ASAS-SN) at a distance of d$_L \simeq 125$ Mpc. Roughly two years after the initial ASAS-SN…

The proximity and duration of the tidal disruption event (TDE) ASASSN-14li led to the discovery of narrow, blue-shifted absorption lines in X-rays and UV. The gas seen in X-ray absorption is consistent with bound material close to the…

High Energy Astrophysical Phenomena · Physics 2023-08-23 J. M. Miller , B. Mockler , E. Ramirez-Ruiz , P. A. Draghis , J. J. Drake , J. Raymond , M. T. Reynolds , X. Xiang , S. -B. Yun , A. Zoghbi