Strong gravitational lensing of quasars has the potential to unlock the poorly understood
physics of these fascinating objects, as well as serve as a probe of the lensing mass …

Shadow formation around supermassive black holes were simulated. Due to enormous
progress in observational facilities and techniques of data analysis researchers approach to …

In the present-day universe, supermassive black hole masses (Script M BH) appear to be
strongly correlated with their galaxy's bulge luminosity, among other properties. In this study …

We review results from our monitoring observations of several lensed quasars performed in
the optical, UV, and X‐ray bands. Modeling of the multi‐wavelength light curves provides …

We present a promising new technique, the g-distribution method, for measuring the
inclination angle (i), the innermost stable circular orbit (ISCO), and the spin of a …

We present results from monitoring observations of the gravitationally lensed quasar RX
J1131− 1231 performed with the Chandra X-Ray Observatory. The X-ray observations were …

Previously, planets have been detected only in the Milky Way galaxy. Here, we show that
quasar microlensing provides a means to probe extragalactic planets in the lens galaxy, by …

Quasar microlensing serves as a unique probe of discrete objects within galaxies and
galaxy clusters. Recent advancement of the technique shows that it can constrain planet …

Quasar microlensing deals with the effect of compact objects along the line of sight on the
apparent brightness of the background quasars. Due to the relative motion between quasar …

Microlensing has proved an effective probe of the structure of the innermost regions of
quasars and an important test of accretion disk models. We present light curves of the …