Observational strong gravity and quantum black hole structure
Steven B. Giddings
TL;DR
This paper reviews theoretical arguments and observational prospects for detecting quantum modifications to black hole structure at horizon scales, as probed by LIGO and the Event Horizon Telescope.
Contribution
It provides an overview of potential quantum black hole structures and discusses how current observations could constrain or reveal these modifications.
Findings
Quantum considerations suggest horizon-scale modifications to black holes.
Observations by LIGO and EHT can potentially detect quantum black hole features.
The paper outlines theoretical arguments for quantum black hole structures.
Abstract
Quantum considerations have led many theorists to believe that classical black hole physics is modified not just deep inside black holes but at {\it horizon scales}, or even further outward. The near-horizon regime has just begun to be observationally probed for astrophysical black holes -- both by LIGO, and by the Event Horizon Telescope. This suggests exciting prospects for observational constraints on or discovery of new quantum black hole structure. This paper overviews arguments for certain such structure and these prospects.
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