Gravitational Waves: Observations and Discoveries

This lecture explores the significance of multi-messenger signals in astrophysics, focusing on the recent detection of gravitational waves. The instructor discusses the observations of GW150914 and GW170817, highlighting the merger events of binary black holes and neutron stars. Through a detailed account of the detection process involving various telescopes and instruments, the lecture showcases the collaborative effort in confirming the existence of gravitational waves and their implications for astrophysical research.