Torus formation in neutron star mergers and well-localized short gamma-ray bursts

@article{Oechslin2006TorusFI,
  title={Torus formation in neutron star mergers and well-localized short gamma-ray bursts},
  author={Roland Oechslin and H.-Th. Janka},
  journal={Monthly Notices of the Royal Astronomical Society},
  year={2006},
  volume={368},
  pages={1489-1499}
}
  • R. Oechslin, H. Janka
  • Published 5 July 2005
  • Physics
  • Monthly Notices of the Royal Astronomical Society
Merging neutron stars (NSs) are hot candidates for the still enigmatic sources of short gamma-ray bursts (GRBs). If the central engines of the huge energy release are accreting relic black holes (BHs) of such mergers, it is important to understand how the properties of the BH-torus systems, in particular disc masses and mass and rotation rate of the compact remnant, are linked to the characterizing parameters of the NS binaries. For this purpose, we present relativistic smoothed particle… 

Figures and Tables from this paper

The missing link: Merging neutron stars naturally produce jet-like structures and can power short gamma-ray bursts
Short Gamma-Ray Bursts (SGRBs) are among the most luminous explosions in the universe, releasing in less than one second the energy emitted by our Galaxy over one year. Despite decades of
Delayed outflows from black hole accretion tori following neutron star binary coalescence
Expulsion of neutron-rich matter following the merger of neutron star (NS) binaries is crucial to the radioactively-powered electromagnetic counterparts of these events and to their relevance as
Neutron star binaries and long-duration gamma-ray bursts
Cosmological long-duration gamma-ray bursts (LGRBs) are thought to originate from the core collapse to black holes (BHs) of stripped massive stars. Those with sufficient rotation form a centrifugally
Compact Binary Progenitors of Short Gamma-Ray Bursts
In recent years, detailed observations and accurate numerical simulations have provided support to the idea that mergers of compact binaries containing either two neutron stars (NSs) or an NS and a
Three-dimensional GRMHD Simulations of Neutrino-cooled Accretion Disks from Neutron Star Mergers
Merging binaries consisting of two neutron stars (NS), or of a NS and a stellar-mass black hole, typically form a massive accretion torus around the remnant black hole or long-lived NS. Outflows from
Optical and X-ray emission from stable millisecond magnetars formed from the merger of binary neutron stars
The coalescence of binary neutron stars (NSs) may in some cases produce a stable massive NS remnant rather than a black hole. Due to the substantial angular momentum from the binary, such a remnant
The Lowest-Mass Stellar Black Holes: Catastrophic Death of Neutron Stars in Gamma-Ray Bursts
Mergers of double neutron stars are considered the most likely progenitors for short gamma-ray bursts. Indeed, such a merger can produce a black hole with a transient accreting torus of nuclear
Binary neutron star mergers: a review of Einstein's richest laboratory.
TLDR
The recent progress in understanding what could be considered Einstein's richest laboratory is reviewed, highlighting in particular the numerous significant advances of the last decade in models, techniques and results for fully general-relativistic dynamical simulations.
Constraints on long-lived remnants of neutron star binary mergers from late-time radio observations of short duration gamma-ray bursts
The coalescence of a binary neutron star (NS) system may in some cases produce a massive NS remnant that is long-lived and, potentially, indefinitely stable to gravitational collapse. Such a remnant
Neutron-rich freeze-out in viscously spreading accretion discs formed from compact object mergers
Accretion discs with masses ∼10 −3 -0.1 Mare believed to form during the merger of a neu- tron star (NS) with another NS and the merger of a NS with a black hole (BH). Soon after their formation,
...
1
2
3
4
5
...

References

SHOWING 1-10 OF 81 REFERENCES
Relativistic outflows from remnants of compact object mergers and their viability for short gamma-ray bursts
We present the first general relativistic hydrodynamic models of the launch and evolution of relativistic jets and winds, driven by thermal energy deposition, possibly due to neutrino-antineutrino
Gamma-ray bursts as the death throes of massive binary stars
We propose that gamma-ray bursts are created in the mergers of double neutron star binaries and black hole neutron star binaries at cosmological distances. Two different processes provide the
Mergers of Neutron Star-Black Hole Binaries with Small Mass Ratios: Nucleosynthesis, Gamma-Ray Bursts, and Electromagnetic Transients
We discuss simulations of the coalescence of black hole-neutron star binary systems with black hole masses between 14 and 20 M☉. The calculations use a three-dimensional smoothed particle
A Compact Binary Merger Model for the Short, Hard GRB 050509b
The first X-ray afterglow for a short ({approx}30ms), hard {gamma}-ray burst was detected by Swift on 9 May 2005 (GRB 050509b). No optical or radio counterpart was identified in follow-up
Magnetized hypermassive neutron-star collapse: a central engine for short gamma-ray bursts.
TLDR
The latest axisymmetric magnetohydrodynamic simulations in full general relativity find that a magnetized HMNS undergoes "delayed" collapse to a rotating black hole (BH) as a result of angular momentum transport via magnetic braking and the magnetorotational instability.
Gamma-ray bursts as collimated jets from neutron star/black hole mergers
THE distribution of more than 150 γ-ray bursts detected by the BATSE experiment is isotropic on the sky but radially non-uniform1,2. This raises the possibility that bursts are cosmological (at z≲l)
Black Hole-Neutron Star Mergers as Central Engines of Gamma-Ray Bursts.
TLDR
Hydrodynamic simulations of the merger of stellar mass black hole-neutron star binaries are compared with mergers of binary neutron stars and the use of a physical nuclear equation of state allows us to include the effects of neutrino emission.
Gamma-ray bursts from stellar mass accretion disks around black holes
A cosmological model for gamma-ray bursts is explored in which the radiation is produced as a broadly beamed pair fireball along the rotation axis of an accreting black hole. The black hole may be a
ACCRETION DISKS AROUND BLACK HOLES: DYNAMICAL EVOLUTION, MERIDIONAL CIRCULATIONS, AND GAMMA-RAY BURSTS
We study the hydrodynamic evolution of massive accretion disks around black holes, formed when a neutron star is disrupted by a black hole in a binary system. The initial conditions are taken from
High-resolution calculations of merging neutron stars - III. Gamma-ray bursts
Recent three-dimensional, high-resolution simulations of neutron star coalescences are analysed to assess whether short gamma-ray bursts (GRBs) could originate from such encounters. The two most
...
1
2
3
4
5
...