Physics
Scientific paper
Mar 1998
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1998pb...repts..98d&link_type=abstract
Technical Report, PB98-168040; IHES/P/98/13 ; Centre de Physique Theorique; Dept. d'Astrophysique Relativiste et de Cosmologie
Physics
Gravitational Waves, Pulsars, Gravitational Fields, Binary Stars, Stellar Gravitation, Tensors, Star Distribution, Scalars, Polytropic Processes, Nucleons, Matter (Physics), Equations Of State, Strong Interactions (Field Theory), Tensor Analysis
Scientific paper
Binary systems comprising at least one neutron star contain strong gravitational field regions and thereby provide a testing ground for strong-field gravity. Two types of data can be used to test the law of gravity in compact binaries: binary pulsar observations; or forthcoming gravitational-wave observations of inspiralling binaries. The authors compare the probing power of these two types of observations within a generic two-parameter family of tensor-scalar gravitational theories. Our analysis generalizes previous work (by us) on binary-pulsar tests by using a sample of realistic equations of state for nuclear matter (instead of a polytrope), and goes beyond a previous study of gravitational-wave tests by considering more general tensor-scalar theories than the one-parameter Jordan-Fierz-Brans-Dicke one. Finite-size effects in tensor-scalar gravity are also discussed.
Damour Thibault
Esposito-Farèse Gilles
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