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Like massive galaxies, dwarf galaxies are expected to undergo major mergers with other dwarfs. However, the end state of these mergers and the role that merging plays in regulating dwarf star formation is uncertain. Using imaging from the…

The tidal disruption of planets by their host stars represents a growing area of interest in transient astronomy, offering insights into the final stages of planetary system evolution. We model the hydrodynamic evolution and predict the…

Earth and Planetary Astrophysics · Physics 2026-03-18 Matías Montesinos , Sergei Nayakshin , Vardan Elbakyan , Zhen Guo , Mario Sucerquia , Amelia Bayo , Zhaohuan Zhu

Tidal disruption events (TDEs) can be observed when stars get too close to supermassive black holes and are torn apart and accreted. The delay time distribution of TDEs, or rate of TDEs as a function of time since a burst of star formation,…

We compute the tidal disruption event (TDE) rate around local massive black holes (MBHs) with masses as low as $2.5\times10^4 {\rm M}_\odot$, thus probing the dwarf regime for the first time. We select a sample of 37 galaxies for which we…

Astrophysics of Galaxies · Physics 2020-10-09 Hugo Pfister , Marta Volonteri , Jane Lixin Dai , Monica Colpi

The existence of optical-ultraviolet Tidal Disruption Events (TDEs) could be considered surprising because their electromagnetic output was originally predicted to be dominated by X-ray emission from an accretion disk. Yet over the last…

High Energy Astrophysical Phenomena · Physics 2020-11-04 Sjoert van Velzen , Thomas W. -S. Holoien , Francesca Onori , Tiara Hung , Iair Arcavi

About a hundred tidal disruption events (TDEs) have been observed and they exhibit a wide range of emission properties both at peak and over their lifetimes. Some TDEs peak predominantly at X-ray energies while others radiate chiefly at UV…

High Energy Astrophysical Phenomena · Physics 2022-10-05 Lars Lund Thomsen , Tom Kwan , Lixin Dai , Samantha Wu , Enrico Ramirez-Ruiz

Tidal disruption events (TDEs) are multi-messenger transients in which a star is tidally destroyed by a supermassive black hole at the center of galaxies. The Rubin Observatory Legacy Survey of Space and Time (LSST) is anticipated to…

High Energy Astrophysical Phenomena · Physics 2024-10-30 K. Szekerczes , T. Ryu , S. H. Suyu , S. Huber , M. Oguri , L. Dai

Recent claimed detections of tidal disruption events (TDEs) in multi-wavelength data have opened potential new windows into the evolution and properties of otherwise dormant supermassive black holes (SMBHs) in the centres of galaxies. At…

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

Stars can be either disrupted as tidal disruption events (TDEs) or swallowed as a whole by massive black holes (MBHs) at galactic centers when they approach sufficiently close to these MBHs. In this work, we investigate the correlations of…

High Energy Astrophysical Phenomena · Physics 2023-08-02 Yunfeng Chen , Qingjuan Yu , Youjun Lu

Restricted by event horizon suppression, tidal disruption events (TDEs) provide a unique window into otherwise hidden supermassive black holes (SMBHs) at the lower end of the mass spectrum, allowing the connection between star formation and…

Astrophysics of Galaxies · Physics 2026-01-29 Paige Ramsden , Sean L. McGee , Matt Nicholl

Intermediate mass black holes (IMBHs) may be the link between stellar mass holes and the supermassive variety in the nuclei of galaxies, and globular clusters (GCs) may be one of the most promising environments for their formation. Here we…

High Energy Astrophysical Phenomena · Physics 2023-12-20 Vivian L. Tang , Piero Madau , Elisa Bortolas , Eric W. Peng

The volumetric rate of tidal disruption events (TDEs) encodes information on the still-unknown demographics of central massive black holes (MBHs) in low-mass galaxies ($\lesssim 10^9$~M$_\odot$). Theoretical TDE rates from model galaxy…

Astrophysics of Galaxies · Physics 2024-07-16 Christian H. Hannah , Anil C. Seth , Nicholas C. Stone , Sjoert van Velzen

We present a physically-grounded population model for optical tidal disruption events (TDEs) that combines first-principles hydrodynamic simulations of stellar disruption with statistical inference of the underlying stellar and black hole…

High Energy Astrophysical Phenomena · Physics 2026-01-29 Tsvi Piran , Julian Krolik , Taeho Ryu

To enhance our understanding of the impact of galaxy mergers on the kinematics of early-type galaxies (ETGs), we examine differences in specific stellar angular momentum within the half-light radius ($\lambda_{R_e}$) among ETGs with…

Astrophysics of Galaxies · Physics 2024-04-05 Yongmin Yoon , Jongwan Ko , Haeun Chung , Woowon Byun , Kyungwon Chun

A tidal disruption event (TDE) occurs when a star is destroyed by the strong tidal shear of a massive black hole (MBH). The accumulation of TDE observations over the last years has revealed that post-starburst galaxies are significantly…

Astrophysics of Galaxies · Physics 2022-02-15 Elisa Bortolas

Tidal disruptions of stars by supermassive black holes produce multi-wavelength emission, of which the optical emission is of ambiguous origin. A unification scenario of tidal disruption events (TDEs) has been proposed to explain the…

A tidal disruption event (TDE) occurs when a star passes too close to a supermassive black hole and gets torn apart by its gravitational tidal field. After the disruption, the stellar debris form an expanding gaseous stream. The morphology…

High Energy Astrophysical Phenomena · Physics 2020-05-20 Andrea Sacchi , Giuseppe Lodato , Claudia Toci , Valentina Motta

In classic time-dependent 1D accretion disk models, the inner radiation pressure dominated regime is viscously unstable. However, late-time observations of accretion disks formed in tidal disruption events (TDEs) do not exhibit evidence of…

High Energy Astrophysical Phenomena · Physics 2025-11-12 Yael Alush , Nicholas C. Stone

Tidal disruption events (TDEs) of stars by single or binary supermassive black holes (SMBHs) brighten galactic nuclei and reveal a population of otherwise dormant black holes. Adopting event rates from the literature, we aim to establish…

High Energy Astrophysical Phenomena · Physics 2017-08-30 Anastasia Fialkov , Abraham Loeb