Tidal Disruption Events

  title={Tidal Disruption Events},
  author={Suvi Gezari},
  journal={Brazilian Journal of Physics},
  • S. Gezari
  • Published 11 June 2013
  • Physics
  • Brazilian Journal of Physics
The majority of supermassive black holes in the Universe lie dormant and starved of fuel. These hidden beasts can be temporarily illuminated when an unlucky star passes close enough to be tidally disrupted and consumed by the black hole. Theorists first proposed in 1975 that tidal disruption events should be an inevitable consequence of supermassive black holes in galaxy nuclei and later argued that the resulting flare of radiation from the accretion of the stellar debris could be a unique… 

Figures and Tables from this paper

Stars Crushed by Black Holes. I. On the Energy Distribution of Stellar Debris in Tidal Disruption Events
The distribution of orbital energies imparted into stellar debris following the close encounter of a star with a supermassive black hole is the principal factor in determining the rate of return of
DirectN-body Simulations of Tidal Disruption Rate Evolution in Unequal-mass Galaxy Mergers
The hierarchical galaxy formation model predicts supermassive black hole binaries (SMBHBs) in galactic nuclei. Due to the gas poor environment and the limited spatial resolution in observations they
Light-curve Evolution of the Nearest Tidal Disruption Event: A Late-time, Radio-only Flare
Tidal disruption events (TDEs) occur when a star passes close enough to a galaxy’s supermassive black hole to be disrupted by tidal forces. We discuss new observations of IGRJ12580+0134, a TDE
The Eccentric Nature of Eccentric Tidal Disruption Events
Upon entering the tidal sphere of a supermassive black hole, a star is ripped apart by tides and transformed into a stream of debris. The ultimate fate of that debris, and the properties of the
Rates of stellar tidal disruption as probes of the supermassive black hole mass function
Rates of stellar tidal disruption events (TDEs) by supermassive black holes (SMBHs) due to two-body relaxation are calculated using a large galaxy sample (N=146) in order to explore the sensitivity
Revisiting the Rates and Demographics of Tidal Disruption Events: Effects of the Disk Formation Efficiency
Tidal disruption events (TDEs) are valuable probes of the demographics of supermassive black holes as well as the dynamics and population of stars in the centers of galaxies. In this Letter, we focus
Using the Hills Mechanism to Generate Repeating Partial Tidal Disruption Events and ASASSN-14ko
Periodic nuclear transients have been detected with increasing frequency, with one such system—ASASSN-14ko—exhibiting highly regular outbursts on a timescale of 114 ± 1 days. It has been postulated
Boosted Tidal Disruption by Massive Black Hole Binaries During Galaxy Mergers FROM The View of N-Body Simulation
Supermassive black hole binaries (SMBHBs) are productions of the hierarchical galaxy formation model. There are many close connections between central SMBH and its host galaxy because the former
Mid-infrared Outbursts in Nearby Galaxies (MIRONG). II. Optical Spectroscopic Follow-up
Infrared echo has proven to be an effective means to discover transient accretion events of supermassive black holes (SMBHs), such as tidal disruption events (TDEs) and changing-look active galactic
Stars Crushed by Black Holes. II. A Physical Model of Adiabatic Compression and Shock Formation in Tidal Disruption Events
We develop a Newtonian model of a deep tidal disruption event (TDE), for which the pericenter distance of the star, r p, is well within the tidal radius of the black hole, r t, i.e., when β ≡ r t/r p


Ultraviolet Detection of the Tidal Disruption of a Star by a Supermassive Black Hole
A supermassive black hole in the nucleus of a galaxy will be revealed when a star passes close enough to be torn apart by tidal forces and a flare of radiation is emitted by the stream of stellar
Multiband light curves of tidal disruption events
Unambiguous detection of the tidal disruption of a star would allow an assessment of the presence and masses of supermassive black holes in quiescent galaxies. It would also provide invaluable
Radio transients from stellar tidal disruption by massive black holes
The tidal disruption of a star by a supermassive black hole provides us with a rare glimpse of these otherwise dormant beasts. It has long been predicted that the disruption will be accompanied by a
Optical Flares from the Tidal Disruption of Stars by Massive Black Holes
A star that wanders too close to a massive black hole (BH) is shredded by the BH's tidal gravity. Stellar gas falls back to the BH, releasing a flare of energy. In anticipation of upcoming transient
A dormant supermassive black hole lurking in the center of a galaxy will be revealed when a star passes close enough to be torn apart by tidal forces, and a flare of electromagnetic radiation is
An ultraviolet–optical flare from the tidal disruption of a helium-rich stellar core
A luminous ultraviolet–optical flare from the nuclear region of an inactive galaxy at a redshift of 0.1696 is reported and it is determined that the disrupted star was a helium-rich stellar core, modulo a factor dependent on the mass and radius of the star disrupted.
Relativistic jet activity from the tidal disruption of a star by a massive black hole
Observations of a bright X-ray flare from the extragalactic transient Swift J164449.3+573451 conclude that they have captured the onset of relativistic jet activity from a supermassive black hole.
A candidate tidal disruption event in the Galaxy cluster Abell 3571
Context. Tidal disruption events are possible sources of temporary nuclear activity in galactic nuclei and can be considered as good indicators of the existence of supermassive black holes in the
Constraints on off-axis jets from stellar tidal disruption flares
Context. Many decades of observations of active galactic nuclei (AGN) and X-ray binaries have shown that relativistic jets are ubiquitous when compact objects accrete. One could therefore anticipate
A Tidal Disruption Flare in A1689 from an Archival X-ray Survey of Galaxy Clusters
Theory suggests that a star making a close passage by a supermassive black hole at the center of a galaxy can under most circumstances be expected to emit a giant flare of radiation as it is