Black Hole-Neutron Star Mergers as Central Engines of Gamma-Ray Bursts.

  title={Black Hole-Neutron Star Mergers as Central Engines of Gamma-Ray Bursts.},
  author={Janka and Eberl and Ruffert and Fryer},
  journal={The Astrophysical journal},
  volume={527 1},
  • Janka, Eberl, Fryer
  • Published 26 August 1999
  • Physics
  • The Astrophysical journal
Hydrodynamic simulations of the merger of stellar mass black hole-neutron star binaries are compared with mergers of binary neutron stars. The simulations are Newtonian but take into account the emission and back-reaction of gravitational waves. The use of a physical nuclear equation of state allows us to include the effects of neutrino emission. For low neutron star-to-black hole mass ratios, the neutron star transfers mass to the black hole during a few cycles of orbital decay and subsequent… 

Figures and Tables from this paper

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
Neutrino transport in black hole-neutron star binaries: Neutrino emission and dynamical mass ejection
We study the merger of black hole-neutron star binaries by fully general-relativistic neutrino-radiation-hydrodynamics simulations throughout the coalescence, particularly focusing on the role of
Accretion dynamics in neutron star black hole binaries
We perform three-dimensional, Newtonian hydrodynamic simulations with a nuclear equation of state to investigate the accretion dynamics in neutron star black hole systems. We find as a general result
Massive disc formation in the tidal disruption of a neutron star by a nearly extremal black hole
Black hole–neutron star (BHNS) binaries are important sources of gravitational waves for second-generation interferometers, and BHNS mergers are also a proposed engine for short, hard gamma-ray
Mergers of neutron stars with black holes have been suggested as candidates for short gamma-ray bursts. They have also been studied for their potential as gravitational wave sources observable with
Collapse of Neutron Stars to Black Holes in Binary Systems: A Model for Short Gamma-Ray Bursts
The accretion of ≈0.1-1 M☉ of material by a neutron star through Roche lobe overflow of its companion or through white dwarf-neutron star coalescence in a low-mass binary system could be enough to
Merging White Dwarf/Black Hole Binaries and Gamma-Ray Bursts
The merger of compact binaries, especially black holes and neutron stars, is frequently invoked to explain gamma-ray bursts (GRBs). In this paper, we present three-dimensional hydrodynamical
Neutrino emission significantly affects the evolution of the accretion tori formed in black hole-neutron star mergers. It removes energy from the disk, alters its composition, and provides a
Low mass binary neutron star mergers : gravitational waves and neutrino emission
Neutron star mergers are among the most promising sources of gravitational waves for advanced ground-based detectors. These mergers are also expected to power bright electromagnetic signals, in the
Evolutions of stellar-mass black hole hyperaccretion systems in the center of gamma-ray bursts
A neutrino-dominated accretion disk around a stellar-mass black hole (BH) can power a gamma-ray burst (GRB) via annihilation of neutrinos launched from the disk. For the BH hyperaccretion system,


Merging White Dwarf/Black Hole Binaries and Gamma-Ray Bursts
The merger of compact binaries, especially black holes and neutron stars, is frequently invoked to explain gamma-ray bursts (GRBs). In this paper, we present three-dimensional hydrodynamical
Evolution of Binary Compact Objects That Merge
Beginning from massive binaries in the Galaxy, we evolve black hole-neutron star (BH-NS) binaries and binary neutron stars, such as the Hulse-Taylor system PSR 1913+16. The new point in our evolution
Formation Rates of Black Hole Accretion Disk Gamma-Ray Bursts
The cosmological origin of at least an appreciable fraction of classical gamma-ray bursts (GRBs) is now supported by redshift measurements for a half-dozen faint host galaxies. Still, the nature of
Tidal interactions of inspiraling compact binaries
We discuss the tidal interaction in neutron star-neutron star and neutron star-black hole binaries and argue that they will not be tidally locked during the gravitational inspiral. More specifically,
Brightness from the Blackest Night: Bursts of Gamma Rays and Gravity Waves from Black Hole Binaries
We use recent results in binary stellar evolution to argue that binaries with at least one black hole dominate the rate of compact-object mergers. Two phenomena generally attributable to such
Gamma-Ray Binaries: Stable Mass Transfer from a Neutron Star to a Black Hole
Gamma-ray bursts are characterized by a duration of milliseconds to several minutes in which an enormous amount of radiation is emitted. The origin of these phenomena is still unknown because
Nucleosynthesis, neutrino bursts and γ-rays from coalescing neutron stars
NEUTRON-STAR collisions occur inevitably when binary neutron stars spiral into each other as a result of damping of gravitational radiation. Such collisions will produce a characteristic burst of
Contribution of High-Mass Black Holes to Mergers of Compact Binaries
We consider the merging of compact binaries consisting of a high-mass black hole and a neutron star. From stellar evolutionary calculations that include mass loss, we estimate that a zero-age main
Simulations of Binary Coalescence of a Neutron Star and a Black Hole
We present the results of Newtonian hydrodynamic simulations of the coalescence of a binary consisting of a black hole with a neutron star. The calculations show that for a wide range of initial
A variety of current models of gamma-ray bursts (GRBs) suggest a common engine: a black hole of several solar masses accreting matter from a disk at a rate of 0.01 to 10 M☉ s-1. Using a numerical