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fbtwitterlinkedinvimeoflicker grey 14rssslideshare1
Henry, Richard C. (1999)
Languages: English
Types: Preprint
Subjects: Astrophysics

Classified by OpenAIRE into

arxiv: Astrophysics::High Energy Astrophysical Phenomena, General Relativity and Quantum Cosmology
Identifiers:doi:10.1086/308819
I have derived the Kretschmann scalar for a general black hole of mass m, angular momentum per unit mass a, and electric charge Q. The Kretschmann scalar gives the amount of curvature of spacetime, as a function of position near (and within) a black hole. This allows one to display the "appearance" of the black hole itself, whether the black hole is merely of stellar mass, or is a supermassive black hole at the center of an active galaxy. Schwarzschild black holes, rotating black holes, electrically charged black holes, and rotating electrically-charged black holes, are all illustrated. Rotating black holes are discovered to possess a negative curvature that is not analagous to that of a saddle.
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