Quote:
Originally Posted by croweater
Sorry another Question. Are there physical or theoretical limits to the frequency of gravitational waves? Cheers Richard
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The attachment answers your question.
Each phenomena produces gravitational waves of a particular frequency range.
The h axis is roughly a strain measurement for how a interferometer type gravitational wave detector should respond to the incident gravitational wave.
Apart from the direct detection by LIGO, an indirect detection of gravitational waves in the extreme low frequency (ELF) range is theoretically possible by a signature polarization pattern of cosmic background radiation photons produced during the inflation stage of the early Universe.
A discovery was announced by the BICEPS project a few years ago but was withdrawn as scientists underestimated the polarization effect from local sources such as magnetized dust in our galaxy.
A major embarrassment for mainstream science but an example of the relentless analysis and verification procedures when "discoveries" are announced.