5 citations · 6 across the 4 of their papers we have counts for
4 papers
SMBH shadows: gravity fingerprints revealed by spectral line background radiation
Konstantinos Kostaros, Padelis Papadopoulos, Wing-Fai Thi +1
SMBHs at the centers of galaxies, illuminated by their accretion disks, can reveal valuable information on BH spacetimes via their shadows, which can be used for strong-gravity tes…
Einstein ring fingerprint around supermassive black holes illuminated by broad line region spectral lines
Konstantinos Kostaros, George Pappas, Padelis Papadopoulos +1
The continuum emission from the hot and ionized inner regions of accretion disks around supermassive black holes (SMBHs), which is strongly lensed by the light ring (i.e., the unst…
Modelling Gaia photometry signals of dark halos
George Pappas, Ippocratis D. Saltas, Laurent Eyer
We use the framework of microlensing to show that observations of binary systems, such as those made by {\it Gaia}, combined with follow-up weak lensing measurements, can provide a…
Fractal signatures of non-Kerr spacetimes in the shadow of light-ring bifurcations
Konstantinos Kostaros, Padelis Papadopoulos, George Pappas
Light-ring bifurcations that can occur for prolate non-Kerr compact objects can leave an indelible signature on SMBH shadows as a fractal sequence of eyebrow-like formations. These…