Streams collision as possible precursor of double tidal disruption events

@article{Bonnerot2019StreamsCA,
  title={Streams collision as possible precursor of double tidal disruption events},
  author={Cl'ement Bonnerot and Elena Maria Rossi},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2019}
}
The rate of tidal disruption events (TDEs) can vary by orders of magnitude depending on the environment and the mechanism that launches the stars towards the black hole's vicinity. For the largest rates, two disruptions can take place shortly one after the other in a double TDE. In this case, the two debris streams may collide with each other before falling back to the black hole resulting in an electromagnetic emission that is absent from single TDEs. We analytically evaluate the conditions… Expand

Figures and Tables from this paper

The Process of Stellar Tidal Disruption by Supermassive Black Holes
Tidal disruption events (TDEs) are among the brightest transients in the optical, ultraviolet, and X-ray sky. These flares are set into motion when a star is torn apart by the tidal field of aExpand
The Effect of General Relativistic Precession on Tidal Disruption Events from Eccentric Nuclear Disks
An eccentric nuclear disk consists of stars moving on apsidally-aligned orbits around a central black hole. The secular gravitational torques that dynamically stabilize these disks can also produceExpand
Hypervelocity Stars from a Supermassive Black Hole–Intermediate-mass Black Hole Binary
In this paper we consider a scenario where the currently observed hypervelocity stars in our Galaxy have been ejected from the Galactic center as a result of dynamical interactions with anExpand
Rates of Stellar Tidal Disruption
Tidal disruption events occur rarely in any individual galaxy. Over the last decade, however, time-domain surveys have begun to accumulate statistical samples of these flares. What dynamicalExpand
Infrared Echo and Late-stage Rebrightening of Nuclear Transient Ps1-10adi: Exploring the Torus with Tidal Disruption Events in Active Galactic Nuclei
Tidal disruption events (TDEs) in active galactic nuclei (AGNs) have been overlooked for a long time but tentatively been investigated recently. We report the discovery of a long-lasting luminousExpand
AT 2019avd: a novel addition to the diverse population of nuclear transients
We report on SRG/eROSITA, ZTF, ASAS-SN, Las Cumbres, NEOWISE-R, and Swift XRT/UVOT observations of the unique ongoing event AT 2019avd, located in the nucleus of a previously inactive galaxy atExpand
Formation of an Accretion Flow
After a star has been tidally disrupted by a black hole, the debris forms an elongated stream. We start by studying the evolution of this gas before its bound part returns to the original stellarExpand

References

SHOWING 1-10 OF 91 REFERENCES
A Dark Year for Tidal Disruption Events
The disruption of a main-sequence star by a supermassive black hole results in the initial production of an extended debris stream that winds repeatedly around the black hole, producing a complexExpand
Prompt Radiation and Mass Outflows from the Stream-Stream Collisions of Tidal Disruption Events
Stream-stream collisions play an important role for the circularization of highly eccentric streams resulting from tidal disruption events (TDEs). We perform three dimensional radiation hydrodynamicExpand
Disc formation from tidal disruptions of stars on eccentric orbits by Schwarzschild black holes
The potential of tidal disruption of stars to probe otherwise quiescent supermassive black holes cannot be exploited, if their dynamics is not fully understood. So far, the observational appearanceExpand
Optical Transients from the Unbound Debris of Tidal Disruption
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 previousExpand
The Impact of Bound Stellar Orbits and General Relativity on the Temporal Behavior of Tidal Disruption Flares
We have carried out general relativistic particle simulations of stars tidally disrupted by massive black holes. When a star is disrupted in a bound orbit with moderate eccentricity instead of aExpand
Hydrodynamical simulations of the tidal stripping of binary stars by massive black holes
In a galactic nucleus, a star on a low angular momentum orbit around the central massive black hole can be fully or partially disrupted by the black hole tidal field, lighting up the compact objectExpand
′Disk Formation Versus Disk Accretion—What Powers Tidal Disruption Events?
A tidal disruption event (TDE) takes place when a star passes near enough to a massive black hole to be disrupted. About half the star’s matter is given elliptical trajectories with large apocenterExpand
Finite, Intense Accretion Bursts from Tidal Disruption of Stars on Bound Orbits
We study accretion processes for tidally disrupted stars approaching supermassive black holes on bound orbits, by performing three dimensional Smoothed Particle Hydrodynamics simulations with aExpand
Soft X-ray Temperature Tidal Disruption Events from Stars on Deep Plunging Orbits
One of the puzzles associated with tidal disruption event candidates (TDEs) is that there is a dichotomy between the color temperatures of ${\rm few}\times 10^4$~K for TDEs discovered with opticalExpand
General Relativistic Hydrodynamic Simulation of Accretion Flow from a Stellar Tidal Disruption
We study how the matter dispersed when a supermassive black hole tidally disrupts a star joins an accretion flow. Combining a relativistic hydrodynamic simulation of the stellar disruption with aExpand
...
1
2
3
4
5
...