Course 1 - Gravitational Waves

摘要: This chapter discusses the Gravitational Waves (GW). The derives wave equation in linearized gravity and main properties of GWs. In addition, interaction GWs with free test particles key ideas underlying functioning GW detectors are also discussed. effective stress-energy tensor is reviewed. generation problem discussed by deriving gravitational field at leading order assuming slow-motion, weak-gravity, negligible self-gravity. signal from binary systems templates stationary phase-approximation (SPA) computed. Astrophysical sources such as pulsars supernovae described. Depending on its origin, stochastic background can be broadly divided two classes: (1) astrophysically generated due to incoherent superposition radiation emitted large populations astrophysical that cannot resolved individually; (2) primordial processes taking place early stages Universe. reviews physical mechanisms could have produced Universe, notably first-order phase transitions, cosmic fundamental strings, inflation.