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Cygnus X-1 (abbreviated Cyg X-1) [11] is a galactic X-ray source in the constellation Cygnus and was the first such source widely accepted to be a black hole. [12] [13] It was discovered in 1964 during a rocket flight and is one of the strongest X-ray sources detectable from Earth, producing a peak X-ray flux density of 2.3 × 10 −23 W/(m 2 ⋅Hz) (2.3 × 10 3 jansky).
The Black Hole is a 1979 American science fiction film directed by Gary Nelson and produced by Walt Disney Productions.The film stars Maximilian Schell, Robert Forster, Joseph Bottoms, Yvette Mimieux, Anthony Perkins and Ernest Borgnine, while the voices of the main robot characters are provided by Roddy McDowall and Slim Pickens (both uncredited).
While in a non-rotating black hole the singularity occurs at a single point in the model coordinates, called a "point singularity", in a rotating black hole, also known as a Kerr black hole, the singularity occurs on a ring (a circular line), known as a "ring singularity". Such a singularity may also theoretically become a wormhole. [18]
Black Holes is the debut studio album by Canadian blues rock band, The Blue Stones. The album was released on October 20, 2015. [7] The album was re-released on October 26, 2018, through Entertainment One .
Black hole greybody factors are functions of frequency and angular momentum that characterizes the deviation of the emission-spectrum of a black hole from a pure black-body spectrum. As a result of quantum effects, an isolated black hole emits radiation that, at the black-hole horizon, matches the radiation from a perfect black body. [ 1 ]
Black Holes and Revelations is the fourth studio album by English rock band Muse, first released on 3 July 2006 through Warner Bros. Records and Muse's Helium-3 imprint. It was produced by Rich Costey over four months in New York City, London, Milan and southern France.
Black Hole Entertainment (also known as Black Hole Games) was a Hungarian video game developer, founded in 2001 in Budapest by seven young game enthusiasts. The company's first title was Armies of Exigo , developed with the financial backing of Andy Vajna , published by Electronic Arts and released in the end of 2004.
An animation of how light rays can be gravitationally bent to form a photon sphere. A photon sphere [1] or photon circle [2] arises in a neighbourhood of the event horizon of a black hole where gravity is so strong that emitted photons will not just bend around the black hole but also return to the point where they were emitted from and consequently display boomerang-like properties. [2]
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