Possible Astrophysical Observables of Quantum Gravity Effects near Black Holes

Understand

Recent implications of results from quantum information theory applied to black holes has led to the confusing conclusions that requires either abandoning the equivalence principle (e.g.

• the firewall picture), or the no-hair theorem (e.g.
• the fuzzball picture), or even more unpalatable options.
• The recent discovery of a pulsar orbiting a black hole opens up new possibilities for tests of theories of gravity.