Constraints on the massive graviton dark matter from pulsar timing and precision astrometry

Maxim Pshirkov; Artem Tuntsov; Konstantin A. Postnov

doi:10.1103/physrevlett.101.261101

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arXiv · 0805.1519

Constraints on the massive graviton dark matter from pulsar timing and precision astrometry

Maxim Pshirkov·Artem Tuntsov·Konstantin A. Postnov

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Abstract

The effect of a narrow-band isotropic stochastic GW background on pulsar timing and astrometric measurements is studied. Such a background appears in some theories of gravity. We show that the existing millisecond pulsar timing accuracy ($\sim 0.2 \rm{μs}$) strongly constrains possible observational consequences of theory of massive gravity with spontaneous Lorentz braking \cite{dtt:2005}, essentially ruling out significant contribution of massive gravitons to the local dark halo density. The present-day accuracy of astrometrical measurements ($\sim 100 \rm{μas}$) sets less stringent constraints on this theory.

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Maxim Pshirkov, Artem Tuntsov, Konstantin A. Postnov. 2008-11-18. Constraints on the massive graviton dark matter from pulsar timing and precision astrometry. https://doi.org/10.1103/physrevlett.101.261101

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