We investigate the null geodesics and the shadow cast by the Kerr–Newman–Kiselev–
Letelier (KNKL) black hole for the equation of state parameter\(\omega _q=-2/3\) and for …

The study of compact object populations has come a long way since the determination of the
mass of the Hulse–Taylor pulsar, and we now count on more than 150 known Galactic …

General relativity is one of the pillars of modern physics. For decades, the theory has been
mainly tested in the weak-field regime with experiments in the solar system and radio …

The presence of spacetime singularities in physically relevant solutions of the Einstein
Equations is normally interpreted as a symptom of the breakdown of classical general …

Gravitational-wave observations of binary black holes provide a suitable arena to test the
fundamental nature of gravity in the strong-field regime. Using the data of the inspiral of 29 …

The continuum-fitting and the iron line methods are currently the two leading techniques for
probing the strong gravity region around accreting black holes. In the present work, we test …

Different astrophysical methods can be combined to detect possible deviations from General
Relativity. In this work, we consider a class of f (R) gravity models selected by the existence …

A Multiwavelength Study of GRS 1716-249 in Outburst: Constraints on Its System
Parameters - IOPscience This site uses cookies. By continuing to use this site you agree to …

Einstein's theory of General Relativity is one of the pillars of modern physics. For decades,
the theory has been mainly tested in the weak field regime with experiments in the Solar …

X-ray reflection spectroscopy is currently one of the leading techniques for studying the inner
part of accretion disks around black holes, measuring black hole spins, and even testing …