Gravitational waveforms from periodic orbits around a novel regular black hole

Abstract We explore potential quantum gravity signatures by studying periodic orbits and their GW emissions around a novel regular black hole (BH) featuring a Minkowski core. Using a rational number q , periodic orbits are classified, revealing that the deviation parameter $$\alpha _0$$ α 0 reshapes the bound-orbit region while preserving characteristic “zoom-whirl” structures. Numerical kludge waveforms reveal detectable phase shifts and amplitude modulations induced by quantum gravity effects with radiation reaction breaking orbital periodicity. Faithfulness analysis demonstrates that larger $$\alpha _{0}$$ α 0 and q enhance distinguishability from the Schwarzschild case, and a comparison with Hayward and quantum Oppenheimer–Snyder BHs shows their similar large-scale behaviors yield macroscopically indistinguishable orbits and waveforms.