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In this paper we compile the analysis of ~ 200 synchrotron flare events from ~ 90 distinct objects/events for which the distance is well established, and hence the peak luminosity can be accurately estimated. For each event we measure this…

High Energy Astrophysical Phenomena · Physics 2015-06-23 M. Pietka , R. P. Fender , E. F. Keane

Polarization observations of tidal disruption events offer unique insights into the accretion processes around supermassive black holes. Here, we present optical polarization observations of the nearby event AT 2023clx, obtained using the…

High Energy Astrophysical Phenomena · Physics 2025-08-14 Karri I. I. Koljonen , Kari Nilsson , Ioannis Liodakis , Elina Lindfors

In a dense stellar environment, such as the core of a globular cluster (GC), dynamical interactions with black holes (BHs) are expected to lead to a variety of astrophysical transients. Here we explore tidal disruption events (TDEs) of…

High Energy Astrophysical Phenomena · Physics 2019-08-21 Kyle Kremer , Wenbin Lu , Carl L. Rodriguez , Mitchell Lachat , Frederic Rasio

In a dense star cluster core, a tidal disruption event (TDE) of a white dwarf (WD) can occur if the WD passes within the tidal radius of an intermediate-mass black hole (IMBH). Very close encounters cause extreme tidal compression in the…

High Energy Astrophysical Phenomena · Physics 2026-05-20 Pavan Vynatheya , Luc Dessart , Taeho Ryu , Rüdiger Pakmor

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…

High Energy Astrophysical Phenomena · Physics 2019-06-12 J. J. Zanazzi , Dong Lai

Tidal disruptions of stars by stellar-mass black holes are expected to occur frequently in dense star clusters. Building upon previous studies that performed hydrodynamic simulations of these encounters, we explore the formation and…

High Energy Astrophysical Phenomena · Physics 2023-08-09 Kyle Kremer , Brenna Mockler , Anthony L. Piro , James C. Lombardi

Totally similar physical process in tidal disruption events (TDEs) basically indicates that there should be potential parameter to distinguish variability properties of TDEs from the other transient events having different physical…

High Energy Astrophysical Phenomena · Physics 2026-03-31 Zhang XueGuang

The theoretical debris supply rate from a tidal disruption of stars can exceed about one hundred times of the Eddington accretion rate for a $10^{6-7}M_{\odot}$ supermassive black hole (SMBH). It is believed that a strong wind will be…

High Energy Astrophysical Phenomena · Physics 2024-04-29 Yuehua Zhang , Qingwen Wu , Jiancheng Wu , Xinwu Cao , Weihua Lei

Tidal disruption of stars by massive black holes produce transient accretion flows that flare at optical, UV, and X-ray wavelengths. At late times, these accretion flows may launch relativistic jets that can be detected through the…

High Energy Astrophysical Phenomena · Physics 2015-05-27 Geoffrey C. Bower

We present the discovery and early evolution of ASASSN-19bt, a tidal disruption event (TDE) discovered by the All-Sky Automated Survey for Supernovae (ASAS-SN) at a distance of $d\simeq115$ Mpc and the first TDE to be detected by TESS. As…

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…

High Energy Astrophysical Phenomena · Physics 2017-05-10 S. Komossa

In the tidal disruption of a star by a black hole, roughly half of the stellar mass becomes bound and falls into the black hole, while the other half is ejected at high velocity. Several previous studies have considered the emission…

High Energy Astrophysical Phenomena · Physics 2014-11-20 Daniel Kasen , Enrico Ramirez-Ruiz

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…

High Energy Astrophysical Phenomena · Physics 2018-06-13 Lixin Dai , Jonathan C. McKinney , Nathaniel Roth , Enrico Ramirez-Ruiz , M. Coleman Miller

Stars grazing supermassive black holes on bound orbits may produce periodic flares over many passages, known as repeating partial tidal disruption events (TDEs). Here, we present 3D hydrodynamic simulations of sun-like stars over multiple…

High Energy Astrophysical Phenomena · Physics 2024-12-30 Chang Liu , Ricardo Yarza , Enrico Ramirez-Ruiz

A tidal disruption event (TDE) occurs when a star plunges through a supermassive black hole's tidal radius, at which point the star's self-gravity is overwhelmed by the tidal gravity of the black hole. In a partial TDE, where the star does…

High Energy Astrophysical Phenomena · Physics 2020-08-19 Patrick R. Miles , Eric R. Coughlin , C. J. Nixon

We present and analyse a new tidal disruption event (TDE), AT2017eqx at redshift z=0.1089, discovered by Pan-STARRS and ATLAS. The position of the transient is consistent with the nucleus of its host galaxy; it peaks at a luminosity of $L…

Stars approaching supermassive black holes can be tidally disrupted. Despite being expected to emit X-rays, TDEs have been largely observed in optical bands, which is poorly understood. In this Letter, we simulate the tidal disruption of a…

High Energy Astrophysical Phenomena · Physics 2024-02-29 Fangyi , Hu , Daniel J. Price , Ilya Mandel

The formation of a compact accretion disk following a tidal disruption event (TDE) requires that the shocked stellar debris cool efficiently as it settles toward the black hole. While recent simulations suggest that stream dissipation…

High Energy Astrophysical Phenomena · Physics 2025-12-18 Semih Tuna , Brian D. Metzger , Yan-Fei Jiang , Andrea Antoni

We derive the first hard X-ray luminosity function (XLF) of stellar tidal disruption events (TDEs) by supermassive black holes (SMBHs), which gives an occurrence rate of TDEs per unit volume as a function of peak luminosity and redshift,…

High Energy Astrophysical Phenomena · Physics 2016-06-22 Taiki Kawamuro , Yoshihiro Ueda , Megumi Shidatsu , Takafumi Hori , Nobuyuki Kawai , Hitoshi Negoro , Tatehiro Mihara