6533b827fe1ef96bd128659e
RESEARCH PRODUCT
Astrophysical constraints on extended gravity models
Gaetano LambiaseGaetano LambiaseMairi SakellariadouArturo StabileAntonio StabileAntonio Stabilesubject
High Energy Physics - TheoryCosmology and Nongalactic Astrophysics (astro-ph.CO)Wave propagationFOS: Physical sciencesGeneral Relativity and Quantum Cosmology (gr-qc)Cosmological constantGeneral Relativity and Quantum CosmologyHigh Energy Physics::TheoryGeneral Relativity and Quantum CosmologyTheory of relativityPulsarBinary starRELATIVITYphysics of the early universemodified gravityCOSMOLOGICAL CONSTANTANISOTROPYPhysicsGravitational waveAstronomy and AstrophysicsSUPERNOVAEPULSARgravitational waves / theoryLAMBDASupernovaStarsDERIVATIVE QUANTUM-GRAVITY; COSMOLOGICAL CONSTANT; LAGRANGIANS; RELATIVITY; SUPERNOVAE; ANISOTROPY; LAMBDA; PULSARClassical mechanicsHigh Energy Physics - Theory (hep-th)LAGRANGIANSDERIVATIVE QUANTUM-GRAVITYAstrophysics - Cosmology and Nongalactic Astrophysicsdescription
We investigate the propagation of gravitational waves in the context of fourth order gravity nonminimally coupled to a massive scalar field. Using the damping of the orbital period of coalescing stellar binary systems, we impose constraints on the free parameters of extended gravity models. In particular, we find that the variation of the orbital period is a function of three mass scales which depend on the free parameters of the model under consideration; we can constrain these mass scales from current observational data.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2015-07-07 |