# Scalar radiation from a source rotating around a regular black hole

## TL;DR

This paper investigates scalar radiation emitted by a source orbiting a regular Bardeen black hole, using quantum field theory in curved spacetime, and compares it to radiation around a Reissner-Nordström black hole.

## Contribution

It introduces a novel analysis of scalar radiation from a source around a regular Bardeen black hole within the quantum field theory framework.

## Key findings

- Calculated the emitted power of scalar radiation in Bardeen black hole spacetime.
- Compared scalar radiation characteristics between Bardeen and Reissner-Nordström black holes.
- Provided insights into how regular black hole geometries affect scalar emission.

## Abstract

The scalar radiation emitted by a source in geodesic circular orbit around a regular Bardeen black hole is analyzed. We use the quantum field theory in curved spacetime framework to obtain the emitted power of radiation by computing the one-particle emission amplitude of scalar particles in the curved background. We compare our results to a similar setting in the spacetime of a Reissner-Nordstr\"{o}m black hole.