Accretion disks around neutron and strange stars in $\mathcal{R}^2$ gravity

TL;DR

This paper investigates how accretion disk emissions around neutron and strange stars differ in $\

Contribution

It compares electromagnetic spectra in $\\mathcal{R}^2$ gravity with General Relativity for static and rotating stars, highlighting significant differences.

Findings

50% difference in electromagnetic flux between theories

20% difference in luminosity for models with equal mass and angular velocity

Lower differences observed in models rotating with Keplerian velocity

Abstract

We study the electromagnetic spectrum of accretion disks around neutron and strange stars in $\mathcal{R}^2$ gravity. Both static and rapidly rotating models are investigated. The results are compared with the General Relativistic results. We found difference between the results in both theories of about 50\% for the electromagnetic flux and about 20\% in the luminosity for models with equal mass and angular velocity in both theories. The observed differences are much lower for models rotating with Kelperian velocity and with equal masses.