0000000000221336

AUTHOR

Ian Hawke

showing 3 related works from this author

3-D collapse of rotating stars to Kerr black holes

2005

We study gravitational collapse of uniformly rotating neutron stars to Kerr black holes, using a new three-dimensional, fully general relativistic hydrodynamics code, which uses high-resolution shock-capturing techniques and a conformal traceless formulation of the Einstein equations. We investigate the gravitational collapse by carefully studying not only the dynamics of the matter, but also that of the trapped surfaces, i.e. of both the apparent and event horizons formed during the collapse. The use of these surfaces, together with the dynamical horizon framework, allows for a precise measurement of the black-hole mass and spin. The ability to successfully perform these simulations for su…

PhysicsHistoryEvent horizonWhite holeMagnetospheric eternally collapsing objectCompact starComputer Science ApplicationsEducationBlack holeGeneral Relativity and Quantum CosmologyNumerical relativityClassical mechanicsRotating black holeGravitational collapseJournal of Physics: Conference Series
researchProduct

Three-dimensional relativistic simulations of rotating neutron-star collapse to a Kerr black hole

2004

We present a new three-dimensional fully general-relativistic hydrodynamics code using high-resolution shock-capturing techniques and a conformal traceless formulation of the Einstein equations. Besides presenting a thorough set of tests which the code passes with very high accuracy, we discuss its application to the study of the gravitational collapse of uniformly rotating neutron stars to Kerr black holes. The initial stellar models are modelled as relativistic polytropes which are either secularly or dynamically unstable and with angular velocities which range from slow rotation to the mass-shedding limit. We investigate the gravitational collapse by carefully studying not only the dynam…

PhysicsNuclear and High Energy PhysicsEvent horizonAstrophysics::High Energy Astrophysical PhenomenaWhite holeAstrophysics (astro-ph)FOS: Physical sciencesGeneral Relativity and Quantum Cosmology (gr-qc)AstrophysicsGeneral Relativity and Quantum CosmologyBlack holeGeneral Relativity and Quantum CosmologyNumerical relativityNeutron starClassical mechanicsRotating black holeApparent horizonGravitational collapsePhysical Review D
researchProduct

THREE-DIMENSIONAL RELATIVISTIC SIMULATIONS OF ROTATING NEUTRON-STAR COLLAPSE TO A KERR BLACK HOLE

2006

We present a new three-dimensional fully general-relativistic hydrodynamics code using high-resolution shock-capturing techniques and a conformal traceless formulation of the Einstein equations. Besides presenting a thorough set of tests which the code passes with very high accuracy, we discuss its application to the study of the gravitational collapse of uniformly rotating neutron stars to Kerr black holes. The initial stellar models are modeled as relativistic polytropes which are either secularly or dynamically unstable and with angular velocities which range from slow rotation to the mass-shedding limit. We investigate the gravitational collapse by carefully studying not only the dynami…

PhysicsGeneral Relativity and Quantum CosmologyAngular momentumNeutron starClassical mechanicsDynamical horizonRotating black holeEvent horizonAstrophysics::High Energy Astrophysical PhenomenaApparent horizonGravitational collapseDifferential rotation
researchProduct