Theoretical and Computational Astrophysics

We explore the most energetic and unusual objects in the universe — black holes, neutron stars, exploding stars, and the powerful cosmic events that occur when these objects collide or collapse. Our work studies how matter and energy behave under conditions that cannot be recreated on Earth, where gravity, density, magnetic fields, and temperature reach extraordinary extremes. Using observations across the electromagnetic spectrum, along with gravitational waves and other “multi-messenger” signals, scientists investigate phenomena such as fast radio bursts, supernovae, compact object mergers, and the environments surrounding black holes and neutron stars. These events not only test the fundamental laws of physics but also help explain how elements are created and how galaxies and cosmic structures evolve over time.

Researchers combine theoretical physics, large-scale simulations, data science, and advanced instrumentation to better understand the extreme universe. Cornell scientists contribute to the development of next-generation observatories and detector technologies that facilitate discoveries in radio astronomy, cosmology, gravitational-wave science, and high-energy astrophysics. By studying the universe under its most extreme conditions, Cornell researchers are helping answer fundamental questions about the nature of space, time, matter, and the dynamic processes that shape the cosmos.