Gravitational-wave astrophysicists

Gravitational-wave astrophysicists are scientists who study gravitational waves—ripples in spacetime caused by some of the most violent and energetic processes in the universe. These processes can include events such as the merger of black holes, neutron star collisions, and supernova explosions. The field combines aspects of astrophysics, theoretical physics, and observational techniques to understand the universe's most extreme events.

Lisa Barsotti might refer to a specific person, but without further context, it’s difficult to determine who exactly you are referring to, as there could be multiple individuals with that name or it could be a name associated with a particular field or topic.