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Geodesic properties in terms of multipole moments in scalar-tensor theories of gravity

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arxiv 1505.02882 v1 pith:RUC56MKZ submitted 2015-05-12 gr-qc astro-ph.HE

classification gr-qcastro-ph.HE
keywords momentsobservablestermsexpressionsformalismmultipolescalar-tensortheories
verification ladder T0 review T1 audit T2 compute T3 formal
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The formalism for describing a metric and the corresponding scalar in terms of multipole moments has recently been developed for scalar-tensor theories. We take advantage of this formalism in order to obtain expressions for the observables that characterise geodesics in terms of the moments. These expressions provide some insight into how the structure of a scalarized compact object affects observables. They can also be used to understand how deviations from general relativity are imprinted on the observables.

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