Harmonic generation of gravitational wave induced Alfven waves

Details Harmonic generation of gravitational wave induced Alfven waves Harmonic generation of gravitational wave induced Alfven waves

2007-11-26

arxiv.org/abs/0711.4025v1

Phys.Rev.D77:024050,2008

Astronomy and Astrophysics

Astrophysics

7 pages

Scientific paper

10.1103/PhysRevD.77.024050

Here we consider the nonlinear evolution of Alfven waves that have been excited by gravitational waves from merging binary pulsars. We derive a wave equation for strongly nonlinear and dispersive Alfven waves. Due to the weak dispersion of the Alfven waves, significant wave steepening can occur, which in turn implies strong harmonic generation. We find that the harmonic generation is saturated due to dispersive effects, and use this to estimate the resulting spectrum. Finally we discuss the possibility of observing the above process.

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