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Silhouettes of invisible black holes
Vyacheslav I. Dokuchaev, Natalia O. Nazarova
In general relativity, isolated black holes are invisible due to an infinitely large redshift of photons propagating from the event horizon to the remote observer. However, the dar…
The brightest point in accretion disk and black hole spin: implication to the image of black hole M87*
Vyacheslav I. Dokuchaev, Natalia O. Nazarova
We propose the simple new method for extracting the value of the black hole spin from the direct high-resolution image of black hole by using a thin accretion disk model. In this m…
Event horizon silhouette: implications to supermassive black holes M87* and SgrA*
Vyacheslav I. Dokuchaev, Natalia O. Nazarova, Vadim P. Smirnov
We demonstrate that a dark silhouette of the black hole illuminated by a thin accretion disk and seen by a distant observer is, in fact, a silhouette of the event horizon hemispher…