The future ability to test theories of gravity with black-hole shadows - NASA ADS
ui.adsabs.harvard.edu
Black-hole shadows are becoming the ultimate lab for testing whether Einstein's gravity holds at its most extreme limits — and next-gen telescopes are about to push that test to the breaking point.
General RelativityAlternative Theories of GravityBlack Hole PhysicsObservational Cosmology
Theory Briefing
- Black-hole shadows — the dark silhouettes cast by event horizons — encode the geometry of spacetime predicted by competing theories of gravity.
- Next-generation instruments like the Black Hole Explorer aim to resolve shadow shapes with enough precision to distinguish General Relativity from rival frameworks.
- Even small deviations in shadow size or shape could confirm or rule out alternative gravity theories that General Relativity alone cannot settle.