Schwarzschild black hole

From Academic Kids

A Schwarzschild black hole or static black hole is a black hole fully defined by its only parameter, the mass M. In general black holes could have in addition angular momentum (rotating black holes) and electric charge (see charged black holes). A Schwarzschild black hole has zero angular momentum and no charge.

The Schwarzschild black hole is characterized by a surrounding area, called the event horizon which is situated at the Schwarzschild radius, often called the radius of a black hole. Any non-rotating and non-charged mass that is smaller than the Schwarzschild radius forms a black hole.

The static black hole is represented by the Schwarzschild metric, a solution to the Einstein field equations for a point mass in empty space (vacuum), found by Karl Schwarzschild in 1916. The solution of the Einstein field equations is valid for any mass M, so in principle (according to general relativity theory) a Schwarzschild black hole of any mass could exist if nature is kind enough to form one.

See also

Black holes by type

A classification by mass

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