Dark star (dark matter)

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Template:Expert needed A dark star is a type of star that may have existed early in the universe before conventional stars were able to form. The stars would be composed mostly of normal matter, like modern stars, but a high concentration of neutralino dark matter within them would generate heat via annihilation reactions between the dark-matter particles. This heat would prevent such stars from collapsing into the relatively compact sizes of modern stars and therefore prevent nuclear fusion among the normal matter atoms from being initiated.[1]

Under this model, a dark star is predicted to be an enormous cloud of hydrogen and helium ranging between 4 and 2000 astronomical units in diameter and with a surface temperature low enough that the emitted radiation would be invisible to the naked eye.[2]

In the unlikely event that dark stars have endured to the modern era, they could be detectable by their emissions of gamma rays, neutrinos, and antimatter and would be associated with clouds of cold molecular hydrogen gas that normally would not harbor such energetic particles.[3][2]


  1. Spolyar, Douglas; Freese, Katherine; Gondolo, Paolo (2008). "Dark matter and the first stars: a new phase of stellar evolution". Physical Review Letters 100 (5): 051101. arXiv:0705.0521. Bibcode 2008PhRvL.100e1101S. doi:10.1103/PhysRevLett.100.051101. PMID 18352355.
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  • Freese, Katherine; Gondolo, Paolo; Spolyar, Douglas (2008). "The Effect of Dark Matter on the First Stars: A New Phase of Stellar Evolution". AIP Conference Proceedings 990: 42-44. arXiv:0709.2369. Bibcode 2008AIPC..990...42F. doi:10.1063/1.2905656.
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  • Freese, Katherine; Bodenheimer, Peter; Gondolo, Paolo; Spolyar, Douglas (2008). "Dark Stars: the First Stars in the Universe may be powered by Dark Matter Heating". AIP Conference Proceedings 1166: 33-38. arXiv:0812.4844. Bibcode 2009AIPC.1166...33F. doi:10.1063/1.3232192.
Observation data
Epoch {{{epoch}}}      Equinox
Constellation {{{3}}}
Right ascension {{{ra1}}}
Declination {{{dec1}}}
Apparent magnitude (V) {{{appmag_v1}}}
Right ascension {{{ra2}}}
Declination {{{dec2}}}
Apparent magnitude (V) {{{appmag_v2}}}
Evolutionary stage {{{9}}}
Spectral type {{{7}}}
Distance{{{4}}} ly
Radius{{{5}}} R
Diameter{{{5}}} D
Luminosity (bolometric){{{11}}} L
Temperature{{{8}}} K
Other designations
{{{1}}}, {{{2}}}

{{{1}}}, also known as {{{2}}}, is a star located in the constellation {{{3}}}. It is located {{{4}}} light years away from the Earth. {{{1}}} has a diameter of {{{5}}} D, making it around the size of the orbit of {{{6}}}. {{{1}}} has a stellar class of {{{7}}} and a temperature of {{{8}}} degrees Kelvin; it is a {{{9}}} that is currently burning {{{10}}} within its core. {{{1}}} is around {{{11}}} times brighter than the Sun. {{{12}}}{{{13}}}