Testing Loop Quantum Gravity from Observational Consequences of Nonsingular Rotating Black Holes

The lack of rotating black hole models, which are typically found in nature, loop quantum gravity (LQG) substantially hinders the progress testing LQG from observations. Starting with a nonrotating as seed metric, we construct spacetime using revised Newman-Janis algorithm. solution is nonsingular everywhere and it reduces to Kerr asymptotically. In different regions parameter space, describes (1) wormhole without event horizon (which, show, almost ruled out by observations), (2) spacelike transition surface inside horizon, or (3) timelike region inner horizon. It shown how fundamental parameters can be constrained observational implications shadow cast this object. causal structure our depends crucially only on while being agnostic about specific details latter, therefore captures universal features an effective rotating, LQG.