The generation of gravitational waves. IV - Bremsstrahlung

Details The generation of gravitational waves. IV - Bremsstrahlung The generation of gravitational waves. IV - Bremsstrahlung

Aug 1978

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978apj...224...62k&link_type=abstract

Astrophysical Journal, Part 1, vol. 224, Aug. 15, 1978, p. 62-85.

Astronomy and Astrophysics

Astrophysics

25

Bremsstrahlung, Gravitational Waves, Relativity, Wave Generation, Perturbation Theory, Plane Waves, Quadrupoles, Schwarzschild Metric, Waveforms

Scientific paper

Previously derived waveforms for gravitational bremsstrahlung are discussed along with their spectra and their limiting structure at high and low relative velocities. Waveforms and spectra are presented for a low-velocity bremsstrahlung encounter, and waveforms are given for encounters of arbitrary relative velocity. Limiting forms for the gravitational-wave amplitudes in the 'forward', 'intermediate', and 'backward' regions are derived in the high-velocity limit. The energy spectra seen by observers in the three regions are computed for arbitrary and high velocities. Simpler methods for analyzing special cases of the bremsstrahlung problem are examined, and the results of those methods are compared with the present results. Those methods include the quadrupole-moment and post-Newtonian formalisms, linear perturbations of the Schwarzschild metric, the method of colliding plane waves, the method of virtual quanta, and the zero-frequency limit. Classical gravitational bremsstrahlung is then compared with classical electromagnetic bremsstrahlung.

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