Angular momentum loss for eccentric compact binary in screened modified gravity

Understand

Gravitational wave (GW) observations provide insight into the gravity regime.

• These observations relies on the comparison of the data to the GWs model, which depends on the orbital evolution of the binary systems.
• In this paper, we study the orbital evolution of eccentric compact binaries within screened modified gravity, which is a kind of scalar-tensor theory with screening mechanisms.
• According to the Noether's theorem, from the theory's GW action, we compute the angular momentum flux both as a function of the fields in the theory and as a function of the multipole moments of a N-body system.