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arXiv · 0709.0003

Probing Gravity with Spacetime Sirens

Cedric Deffayet·Kristen Menou
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Abstract

A gravitational observatory such as LISA will detect coalescing pairs of massive black holes, accurately measure their luminosity distance and help identify a host galaxy or an electromagnetic counterpart. If dark energy is a manifestation of modified gravity on large scales, gravitational waves from cosmologically-distant spacetime sirens are direct probes of this new physics. For example, a gravitational Hubble diagram based on black hole pair luminosity distances and host galaxy redshifts could reveal a large distance extra-dimensional leakage of gravity. Various additional signatures may be expected in a gravitational signal propagated over cosmological scales.

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Cedric Deffayet, Kristen Menou. 2007-08-31. Probing Gravity with Spacetime Sirens. https://doi.org/10.1086/522931

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