Tea in the Atrium Room: 307

Colloquium Room: 307 Title: New Frontiers in Transient Astrophysics: Gravitational-Wave Multi-Messenger Sources and r-process Nucleosynthesis Abstract: The detection of GW170817 enabled us to track down and watch the cataclysmic event in multiple wavelengths of light, allowing us to scrutinize the source of these cosmic ripples for the first time. This discovery provided the first solid evidence that neutron-star smashups are the source of much of the Universe’s gold, platinum, and other heavy elements. With a single event, we were able to answer fundamental questions in general relativity, cosmology, nuclear physics, and astrophysics. However, other aspects of the story, as revealed by these events, are still shrouded in mystery. For astronomers and physicists across disciplines, this is a fascinating time to be alive.