Viewing the Shadow of the Black Hole at the Galactic Center
@article{Falcke1999ViewingTS, title={Viewing the Shadow of the Black Hole at the Galactic Center}, author={Heino Falcke and Fulvio Melia and Eric Agol}, journal={The Astrophysical Journal Letters}, year={1999}, volume={528}, pages={L13 - L16} }
In recent years, evidence for the existence of an ultracompact concentration of dark mass associated with the radio source Sagittarius A* in the Galactic center has become very strong. However, unambiguous proof that this object is indeed a black hole is still lacking. A defining characteristic of a black hole is the event horizon. To a distant observer, the event horizon casts a relatively large "shadow" with an apparent diameter of ∼10 gravitational radii that is due to the bending of light…
602 Citations
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