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  2. Black hole - Wikipedia

    en.wikipedia.org/wiki/Black_hole

    A black hole with the mass of a car would have a diameter of about 10 −24 m and take a nanosecond to evaporate, during which time it would briefly have a luminosity of more than 200 times that of the Sun. Lower-mass black holes are expected to evaporate even faster; for example, a black hole of mass 1 TeV/c 2 would take less than 10 −88 ...

  3. Gravitational lens - Wikipedia

    en.wikipedia.org/wiki/Gravitational_lens

    The aqua circle is the light source as it would be seen if there were no lens, while white spots are the multiple images of the source (see Einstein ring). A gravitational lens is matter, such as a cluster of galaxies or a point particle, that bends light from a distant source as it travels toward

  4. Outline of black holes - Wikipedia

    en.wikipedia.org/wiki/Outline_of_black_holes

    Extremal black hole – black hole with the minimal possible mass that can be compatible with a given charge and angular momentum. Black hole electron – if there were a black hole with the same mass and charge as an electron, it would share many of the properties of the electron including the magnetic moment and Compton wavelength.

  5. Dark matter - Wikipedia

    en.wikipedia.org/wiki/Dark_matter

    Primordial black holes as a dark matter candidate has the major advantage that it is based on a well-understood theory (General Relativity) and objects (black holes) that are already known to exist. However, producing primordial black holes requires exotic cosmic inflation or physics beyond the standard model of particle physics , [ 125 ] and ...

  6. Binary black hole - Wikipedia

    en.wikipedia.org/wiki/Binary_black_hole

    A binary black hole (BBH), or black hole binary, is an astronomical object consisting of two black holes in close orbit around each other. Like black holes themselves, binary black holes are often divided into binary stellar black holes , formed either as remnants of high-mass binary star systems or by dynamic processes and mutual capture; and ...

  7. Wikipedia:VideoWiki/Black Hole - Wikipedia

    en.wikipedia.org/wiki/Wikipedia:VideoWiki/Black_Hole

    A black hole is a region of spacetime exhibiting such strong gravitational effects that nothing—not even particles and electromagnetic radiation such as light—can escape from inside it. [1] The theory of general relativity predicts that a sufficiently compact mass can deform spacetime to form a black hole.

  8. Introduction to general relativity - Wikipedia

    en.wikipedia.org/wiki/Introduction_to_general...

    For instance, in the long term, the collapse of a hypothetical matter cube will not result in a cube-shaped black hole. Instead, the resulting black hole will be indistinguishable from a black hole formed by the collapse of a spherical mass. In its transition to a spherical shape, the black hole formed by the collapse of a more complicated ...

  9. Direct collapse black hole - Wikipedia

    en.wikipedia.org/wiki/Direct_collapse_black_hole

    Direct collapse black holes (DCBHs) are massive black hole seeds theorized to have formed in the high-redshift Universe and with typical masses at formation of ~ 10 5 M ☉, but spanning between 10 4 M ☉ and 10 6 M ☉. The environmental physical conditions to form a DCBH (as opposed to a cluster of stars) are the following: [3] [4]