Gravitational radiation from plunging orbits: Perturbative study

Gravitational radiation from plunging orbits: Perturbative study

Numerical relativity has recently yielded a plethora of results about kicks from spinning mergers which has, in turn, vastly increased our knowledge about the spin interactions of black hole systems. In this work we use black hole perturbation theory to calculate accurately the gravitational waves emanating from the end of the plunging stage of an extreme mass ratio merger in order to further u...

Gravitational Ionization: Periodic Orbits of Binary Systems Perturbed by Gravitational Radiation

The long term perturbation of a Newtonian binary system by an incident gravitational wave is discussed in connection with the issue of gravitational ionization. The periodic orbits of the planar tidal equation are investigated and the conditions for their existence are presented. The possibility of ionization of a Keplerian orbit via gravitational radiation is discussed.

Gravitational radiation from relativistic sources

Calculating Gravitational Radiation from Collisions

The development of both groundand space-based gravitational wave detectors provides new opportunities to observe the radiation from binaries containing neutron stars and black holes. Numerical simulations in 3-D are essential for calculating the coalescence waveforms, and comprise some of the most challenging problems in astrophysics today. This article briefly reviews the current status of eff...

Gravitational wave background from coalescing compact stars in eccentric orbits

Stochastic gravitational wave background produced by a stationary coalescing population of binary neutron stars in the Galaxy is calculated. This background is found to constitute a confusion limit within the LISA frequency band up to a limiting frequency νlim ∼ 10 −3 Hz, leaving the frequency window ∼ 10–10 Hz open for the potential detection of cosmological stochastic gravitational waves and ...