Can I read A simplified approach for reproducing fully relativistic spectra in X-ray binary systems: Application to Cygnus X-1 on EtoBox?

A simplified approach for reproducing fully relativistic spectra in X-ray binary systems: Application to Cygnus X-1 by Papavasileiou, Th. V.; Kosmas, O.; Kosmas, T. S. is a scholarly article available to read on EtoBox.

What is A simplified approach for reproducing fully relativistic spectra in X-ray binary systems: Application to Cygnus X-1 about?

General relativistic effects are strong near the black hole of an X-ray binary and significantly impact the total energy released at the innermost accretion disk's region. Our goal is to fully incorporate the black hole's spin and all the general relativistic effects on the observed spectra coming from X-ray binary systems while maintaining the simplicity of the standard disk model. That is possible by appropriately shifting only the disk's inner radius. We employ some of the most efficient pseudo-Newtonian potentials around Kerr black holes and derive two generalized disk temperature profiles, thus incorporating the spin's contribution to the thermal spectra. Then, we associate the observed radiative efficiency with the emission pattern featuring all the relativistic effects included in the kerrbb model, obtaining an expression about the modified inner radius of the disk. Moreover, we apply this method to Cygnus X-1 by fitting the observational data obtained during its high/soft and hard/low spectral states. The fully relativistic spectra are reproduced to a very good approximation with an error margin of 0.03-4%. The disk is parameterized by a modified innermost radius within the

Author

Papavasileiou, Th. V.; Kosmas, O.; Kosmas, T. S.

Published

2024

Language

EN