A magnetically heated slim disc-corona model for tidal disruption events

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Tidal Disruption Events in Active Galactic Nuclei: Thermal Radiation and Jets
Nimrod Tripto, Tsvi Piran, Julian Krolik · 2026 · High Energy Astrophysical Phenomena · AI summary available

In short
A radiation-MHD simulation shows that tidal debris striking an AGN disk drives super-Eddington accretion, asymmetric thermal emission, and magnetic-flux accumulation potentially sufficient to power some TDE jets.
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Observations of Repeating Tidal Disruption Events
I. Arcavi, T. Wevers · 2026 · Not summarized yet

Abstract
The disruption of stars by supermassive black holes (SMBHs) as tidal disruption events (TDEs) can produce transient flares across the electromagnetic spectrum. Such flares can be used to probe SMBH properties, accretion physics and stellar dynamics in galactic nuclei. However, it can be difficult to distinguish TDE flares and those arising from other accretion phenomena around SMBHs, such as active galactic nuclei disk instabilities. Repeated flares from the same location can be produced by either such instabilities or by repeated partial disruptions of the same star, with the former expected to be at random intervals and the latter roughly periodic. Repeating nuclear transients can thus be …
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Anisotropic wind in tidal disruption events
P. Martire, E. Rossi, Nicholas C. Stone et al. · 2026 · Not summarized yet

Abstract
Over the coming years, the number of tidal disruption events (TDEs) is expected to substantially increase with observations from the Vera Rubin Observatory (g and r band) and {\it ULTRASAT} (near UV) wide-field surveys. These future samples have great promise to characterize the bottom end of the massive black hole mass function, but existing detections of intermediate mass black hole TDEs are primarily in X-rays, leaving their optical/UV emission largely unexplored. We present a time- and angle-dependent analysis of the outflow produced by dissipation near pericentre in a three-dimensional end-to-end radiation-hydrodynamics simulation of a TDE by a $10^4 M_\odot$ black hole with realistic p…
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High-energy neutrinos from shocked circumnuclear material around optically-bright and infrared-only tidal disruption events
Mainak Mukhopadhyay, Shigeo S. Kimura, T. Matsumoto · 2026 · Not summarized yet

Abstract
Tidal disruption events (TDEs) can launch sub-relativistic outflows that drive shocks into the surrounding circumnuclear material (CNM), providing a natural site for cosmic ray (CR) acceleration and high-energy neutrino production through hadronuclear ($pp$) interactions. We model this emission for optically bright and infrared (IR)-only TDEs, the latter motivated by a recently identified population of luminous IR transients with weak or absent optical counterparts, consistent with TDEs embedded in dusty, obscured nuclear environments. We semi-analytically compute the shock dynamics, CR acceleration and transport, and neutrino production, including the radiative cooling and compression in de…
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The chirping of Lense-Thirring precession in tidal disruption event accretion flows
A. Mummery, E. Quataert · 2026 · Not summarized yet

Abstract
Tidal disruption event X-ray light curves do not appear to show clear signs of periodic modulation. This is naively somewhat surprising since the stars that are disrupted originate at large scales in the galaxy where they cannot know about the orientation of the black hole spin axis. This should lead to the formation of a misaligned disk that precesses due to Lense-Thirring torques, modulating X-ray emission from the inner disk regions. We argue that in fact the properties which are required for solid-body precession, namely a thick $(H/R\sim {\mathcal O}(1))$ disk, naturally lead to rapid precession period change, with a per-period increase of $\Delta T_{\rm prec}/T_{\rm prec} \sim {\mathca…
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The secular tidal disruption of stars by low-mass Super Massive Black Holes secondaries in galactic nuclei
Giacomo Fragione, Nathan Leigh · 2018 · Astrophysics of Galaxies · cited 26 times · AI summary available

Abstract
Stars passing too close to a super massive black hole (SMBH) can be produce tidal disruption events (TDEs). Since the resulting stellar debris can produce a strong electromagnetic flare, TDEs are believed to probe the presence of single SMBHs in galactic nuclei, which otherwise remain dark. A few TDE candidates have so far been observed. In this paper, we show how stars orbiting an IMBH secondary are perturbed by an SMBH primary by means of high-precision direct N-body simulations. We find that the evolution of the stellar orbits are severely affected by the primary SMBH due to secular effects. As a result, those regions of parameter space corresponding to large stellar orbital inclinations …
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Prompt Jet Launching and Delayed Thermal Disk in Tidal Disruption Event for Prolonged Activity GRB 220706A
Yuri Sato, Rin Oikawa · 2026 · Not summarized yet

Abstract
GRB 220706A exhibits X-ray flaring activity extending to ~51 days after the trigger, along with a luminous optical thermal component emerging on a timescale of ~10^6 s. Such prolonged central-engine activity could be powered by a collapsar fed by an extended stellar envelope. However, a relativistic jet may struggle to break out of the extended envelope. These challenges motivate a tidal disruption event (TDE), although explaining both the early relativistic jet and the luminous late optical thermal emission within one TDE framework remains difficult. We investigate a TDE scenario in which shocks between stellar debris streams drive the early inflow of some debris, potentially carrying preex…
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First Pre-peak Ultraviolet Spectrum of a Tidal Disruption Event: A Fast Outflow Revealed Prior to Maximum Light in TDE2025aarm
E. Hammerstein, R. Chornock, J. Somalwar et al. · 2026 · Not summarized yet

Abstract
The tidal disruption and eventual accretion of a star by a massive black hole can lead to the launching of outflows and winds that encode important information about the tidal disruption and accretion processes. However, little is known about the existence and behavior of these outflows before optical light-curve peak, when processes such as stream-stream collisions and disk formation may be important. Here, we present the first pre-peak ultraviolet (UV) spectrum of a tidal disruption event (TDE), obtained $\sim 20$ days before optical maximum light of the nearby (redshift $z=0.0137$) TDE2025aarm, along with quasi-simultaneous infrared (IR) through X-ray observations. Our HST/STIS spectrum s…

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