Constraints on Massive-Graviton Dark Matter from Pulsar Timing and Precision Astrometryстатья
Статья опубликована в высокорейтинговом журнале
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Дата последнего поиска статьи во внешних источниках: 18 июля 2013 г.
Аннотация:The effect of a narrow-band isotropic stochastic gravitational wave 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 (˜0.2μs) strongly constrains possible observational consequences of theory of massive gravity with spontaneous Lorentz braking, essentially ruling out significant contribution of massive gravitons to the local dark halo density. The present-day accuracy of astrometrical measurements (˜100μarcsec) sets less stringent constraints on this theory.