Eur. Phys. J. C (2020) 80: 343
https://doi.org/10.1140/epjc/s10052-020-7913-y

Regular Article - Theoretical Physics

Upper bound on the GUP parameter using the black hole shadow

Centro de Ciências Naturais e Humanas, Universidade Federal do ABC, Avenida dos Estados 5001, Santo André, São Paulo, 09210-580, Brazil

^* e-mail: nevesjcs@if.usp.br

Received: 15 July 2019
Accepted: 8 April 2020
Published online: 28 April 2020

Abstract

An upper bound on the parameter that provides a generalized uncertainty principle (GUP) is obtained from the black hole shadow. With the aid of a recent constraint between regular black holes and the GUP parameter, it is indicated a relation between this parameter and the deviation from circularity of the black hole shadow. In the case of the recent announcement of the M87* results from the Event Horizon Telescope collaboration, a deviation from circularity imposes a GUP parameter .