15 citations · 20 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…
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…
Chaotic photon orbits and shadows of a non-Kerr object described by the Hartle-Thorne spacetime
Konstantinos Kostaros, George Pappas
The data from the event horizon telescope have provided a novel view of the vicinity of the horizon of a black hole (BH), by imaging the region around the light-ring. They have als…