Quantum gravity corrections to accretion onto a Schwarzschild black hole

TL;DR

This paper investigates how quantum gravity effects, within the asymptotic safety framework, influence matter accretion onto Schwarzschild black holes, deriving corrected profiles and fluxes that could test quantum gravity theories.

Contribution

It provides explicit expressions for matter density, temperature profiles, and flux corrections due to quantum gravity near black holes, advancing understanding of quantum effects in strong gravity regimes.

Findings

Derived conditions for critical points in accretion

Explicit temperature and density profiles with quantum corrections

Quantified flux modifications at the event horizon

Abstract

Quantum gravity corrections to accretion onto a Schwarzschild black hole are considered in the context of asymptotically safe scenario. The possible positions of the critical points are discussed and the general conditions for critical points are obtained. The explicit expressions for matter density compression and temperature profile both below the critical radius and at the event horizon are derived. For polytropic matter, we determine the corrected temperature and the integrated flux resulting from quantum gravity effects at the event horizon, which might be as a test of asymptotically safe scenario.