Gravitational waves from density perturbations in an early matter domination era
Ioannis Dalianis, Chris Kouvaris
Abstract
Abstract We calculate the gravitational wave background produced from density perturbations in an early matter domination era where primordial black holes form. The formation of black holes requires perturbations out of the linear regime. Space with such perturbations reach a maximum expansion before it collapses asymmetrically forming a Zel'dovich pancake which depending on the parameters can either lead to a black hole or a virialized halo. In both cases and due to the asymmetry of the collapsing matter, a quadrupole moment generates gravitational waves which leave an imprint in the form of a stochastic background that can be detectable by near future gravitational interferometers.
Topics & Concepts
PhysicsPrimordial black holeGravitational waveQuadrupoleAstrophysicsGravitational collapseGravitational wave backgroundDark matterHaloAsymmetryBlack hole (networking)GravitationQuantum electrodynamicsClassical mechanicsBinary black holeQuantum mechanicsGalaxyLink-state routing protocolRouting protocolRouting (electronic design automation)Computer scienceComputer networkCosmology and Gravitation TheoriesPulsars and Gravitational Waves ResearchBlack Holes and Theoretical Physics