Eur. Phys. J. C (2015) 75: 129
https://doi.org/10.1140/epjc/s10052-015-3349-1

Regular Article - Theoretical Physics

Accretion and evaporation of modified Hayward black hole

Department of Mathematics, Indian Institute of Engineering Science and Technology, Shibpur, Howrah, 711 103, India

^* e-mail: ujjaldebnath@yahoo.com
^** e-mail: ujjaldebnath@gmail.com
^*** e-mail: ujjal@iucaa.ernet.in

Received: 18 February 2015
Accepted: 3 March 2015
Published online: 20 March 2015

Abstract

We assume the most general static spherically symmetric black hole metric. The accretion of any general kind of fluid flow around the black hole is investigated. The accretion of the fluid flow around the modified Hayward black hole is analyzed, and we then calculate the critical point, the fluid’s four-velocity, and the velocity of sound during the accretion process. Also the nature of the dynamical mass of the black hole during accretion of the fluid flow, taking into consideration Hawking radiation from the black hole, i.e., evaporation of the black hole, is analyzed.