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Rates of stellar tidal disruption events (TDEs) around supermassive black holes (SMBHs) have been extensively calculated using the loss cone theory, while theoretical work on TDE rates around intermediate-mass black holes (IMBHs) has been…

High Energy Astrophysical Phenomena · Physics 2025-02-27 Janet N. Y. Chang , Lixin Dai , Hugo Pfister , Rudrani Kar Chowdhury , Priyamvada Natarajan

Tidal disruption events (TDEs) can potentially probe low-mass black holes in host galaxies that might not adhere to bulge or stellar-dispersion relationships. At least initially, TDEs can also reveal super-Eddington accretion. X-ray…

The occurrence rate of tidal disruption events (TDEs) by survey missions depend on the black hole mass function of the galaxies, properties of the stellar cusp and mass of the central black hole. Using a power law density profile with…

High Energy Astrophysical Phenomena · Physics 2020-04-08 T. Mageshwaran , A. Mangalam

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…

Astrophysics of Galaxies · Physics 2024-12-31 Christian H. Hannah , Nicholas C. Stone , Anil C. Seth , Sjoert van Velzen

Using a suite of fully relativistic hydrodynamic simulations applied to main-sequence stars with realistic internal density profiles, we examine full and partial tidal disruptions across a wide range of black hole mass ($10^{5}\leq M_{\rm…

High Energy Astrophysical Phenomena · Physics 2020-12-02 Taeho Ryu , Julian Krolik , Tsvi Piran , Scott C. Noble

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

A tidal disruption event (TDE) is an astronomical phenomenon in which a previously dormant black hole (BH) destroys a star passing too close to its central part. We analyzed the flaring episode detected from the TDE sources, Swift~J1644+57…

Astrophysics of Galaxies · Physics 2017-11-15 Elena Seifina , Lev Titarchuk , Enrico Virgill

The tidal disruption of a star by a massive black hole is expected to yield a luminous flare of thermal emission. About two dozen of these stellar tidal disruption flares (TDFs) may have been detected in optical transient surveys. However,…

High Energy Astrophysical Phenomena · Physics 2018-01-11 Sjoert van Velzen

Tidal disruption event (TDE) iPTF16fnl shows a relatively low optical flare with observationally very weak X-ray emission and the spectroscopic property that the helium emission line from the source dominates over the hydrogen emission line…

High Energy Astrophysical Phenomena · Physics 2025-01-29 Mageshwaran Tamilan , Gargi Shaw , Sudip Bhattacharyya , Kimitake Hayasaki

Measuring the mass distribution of supermassive black holes (SMBHs) over cosmic time remains particularly challenging for the low mass ($M_{\bullet}\lesssim10^8~M_\odot$) population at $z>1$. This population is also the most sensitive to…

High Energy Astrophysical Phenomena · Physics 2026-02-06 Mitchell Karmen , Suvi Gezari , Colin Norman , Muryel Guolo

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

We describe a model of tidal disruption events (TDEs) with input physical parameters that include the black hole (BH) mass $M_{\bullet}$, the specific orbital energy $E$, the angular momentum $J$, the star mass $M_{\star}$ and radius…

High Energy Astrophysical Phenomena · Physics 2017-11-16 A. Mangalam , T. Mageshwaran

Tidal disruption events (TDEs) occur when a star crosses the tidal radius of a black hole (BH) and is ripped apart, providing a powerful way to probe dormant BHs over a wide mass range. In this study, we present our late-time observations…

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

The rate of tidal disruption events (TDEs), $R_\text{TDE}$, is predicted to depend on stellar conditions near the super-massive black hole (SMBH), which are on difficult-to-measure sub-parsec scales. We test whether $R_\text{TDE}$ depends…

High Energy Astrophysical Phenomena · Physics 2018-02-07 Or Graur , K. Decker French , H. Jabran Zahid , James Guillochon , Kaisey S. Mandel , Katie Auchettl , Ann I. Zabludoff

We compute the expected cosmic rates of tidal disruption events induced by individual massive black holes (MBHs) and by MBH binaries (MBHBs) - with a specific focus on the latter class - to explore the potential of TDEs to probe the cosmic…

Astrophysics of Galaxies · Physics 2019-07-24 Stephen Thorp , Eli Chadwick , Alberto Sesana

Observations of tidal disruption events (TDEs) have already produced tens of strong candidate flares, and their number will greatly increase with upcoming wide field surveys. Nevertheless, the origin of the measured luminosity peak at early…

High Energy Astrophysical Phenomena · Physics 2025-12-15 Paola Martire , Elena Maria Rossi , Nicholas Chamberlain Stone , Elad Steinberg , Konstantinos Kilmetis , Itai Linial

Tidal disruption events (TDEs) offer a unique way to study dormant black holes. While the number of observed TDEs has grown thanks to the emergence of wide-field surveys in the past few decades, questions regarding the nature of the…

The cooling envelope model for tidal disruption events (TDE) postulates that while the stellar debris streams rapidly dissipate their bulk kinetic energy (``circularize"), this does not necessarily imply rapid feeding of the supermassive…

High Energy Astrophysical Phenomena · Physics 2024-01-22 Nikhil Sarin , Brian D. Metzger

We study the properties of tidal disruption event (TDE) host galaxies in the context of a catalog of ~500,000 galaxies from the Sloan Digital Sky Survey. We explore whether selection effects can account for the overrepresentation of TDEs in…

High Energy Astrophysical Phenomena · Physics 2017-11-16 Jamie Law-Smith , Enrico Ramirez-Ruiz , Sara L. Ellison , Ryan J. Foley