Thin Accretion Disk onto slowly rotating black holes in Einstein-{\AE}ther theory

TL;DR

This paper examines how the e6ther field influences the physical and optical properties of thin accretion disks around slowly rotating Einstein-e6ther black holes, including their images and spectra.

Contribution

It provides a detailed analysis of the electromagnetic radiation and optical appearance of accretion disks in Einstein-e6ther black hole spacetimes, highlighting the e6ther field's effects.

Findings

The e6ther field affects the central shadow area of the accretion disk.

The energy flux, temperature distribution, and spectrum are influenced by the e6ther field.

Ray-traced images show modifications in the disk's appearance due to the e6ther field.

Abstract

The accretion disk is formed by particles moving in closed orbits around a compact object, whose physical properties and the electromagnetic radiation characteristics are determined by the space-time geometry around the compact object. In this paper, we study the physical properties and the optical appearance of the electromagnetic radiation emitted from a thin accretion disk around the two types of the black hole solution in Einstein-\AE ther theory. We investigate in detail the effects of the \ae ther field on the energy flux, temperature distribution, and electromagnetic spectrum of the disk in the two types of slowly rotating Einstein-\AE{}ther black holes. Then we plot the ray-traced redshifted image as well as the intensity and polarization profile of a lensed accretion disk around the two types of Einstein-\AE ther black holes. We found that from the image simulation, the \ae ther field only has a certain effect on the central shadow area of the accretion disk.