Summer Program
Black Holes Across Mass Scales: Formation, Growth, and the Multi-Messenger Frontier
June 14–July 12, 2026
Organizers:
Suvi Gezari, University of Maryland
Andrea Ghez, University of California Los Angeles
Smadar Naoz, University of California Los Angeles
Fred Rasio, Northwestern University
The astrophysics of black holes is entering a golden age, with new observations and theoretical advances revealing their formation, growth, and impact across the mass spectrum—from stellar remnants in clusters to supermassive black holes in the early Universe. This workshop will explore the environments of black holes and the rich astrophysics they host, including stellar-mass black hole interactions, as well as the extreme environments around supermassive black holes that give rise to transients such as tidal disruption events, quasi-periodic eruptions, and extreme mass ratio inspirals. Our Galactic Center offers a unique laboratory for probing these processes, while recent discoveries of compact “Little Red Dots” in the distant Universe provide clues to the earliest stages of black hole growth. By bringing together experts in gravitational waves, stellar and gas dynamics, accretion physics, and multi-wavelength observations, the workshop will foster new connections and chart the path forward in understanding black holes as engines of cosmic evolution.
Summer Workshops
The summer program, running for 16 weeks from late-May to mid-September, emphasizes exciting open problems at the cutting edge. Two or three concurrent workshops, each with a specific focus selected for timeliness and the potential for breakthroughs and of two to five weeks in length, establish the main themes of each week, with twelve or thirteen different workshops each summer, balanced across fields including particle physics, string theory, astrophysics and hard and soft condensed matter physics, as well as emerging areas including biological physics, ultra-cold atom physics, quantum information, and physical mathematics. Additional researchers participate in small working groups or as individual researchers. This framework is designed to maximize informal interactions and free discussion within each area and to promote cross-fertilization between different areas via the common language of theoretical physics. Participation in the summer program of the Aspen Center for Physics is by application and subsequent invitation only. View past workshops.