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Hawking star

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A Hawking star is a theoretical type of star, where the star's core contains a very small, substellar, primordial black hole, and is partially or completely powered by energy from matter accreting into the black hole, rather than stellar fusion. It is named for Stephen Hawking, who proposed the existence of primordial black holes.[1][2][3]

The existence and frequency of Hawking stars would be a test for the existence of primordial black holes and their commonality, and test their candidacy as a form of dark matter.[2][3]

These stars are theorized to exist in the contemporary universe,[2][3] unlike a similar type of stars from the early universe, quasi-stars, where very large gas clouds directly collapse into black holes surrounded by star's envelope, also powered by black hole accretion.[4] Unlike the primordial quasi-stars, Hawking stars would be the size of contemporary stars, whereas quasi-stars would be incredibly massive.[2][3]

See also

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  • Thorne–Żytkow object, a theoretical type of star formed by a neutron star merging with and becoming the core of another star
  • Supernova progenitor, a star that could collapse into a black hole after the end of its life
  • Stellar black hole, a black hole formed by the collapse of a star
  • Quasar, a star-like/point-like shining object, that is a galactic core black hole powered up by an accretion disk to an extreme degree

References

[edit]
  1. ^ Max Planck Society (22 December 2023). "What happens if you put a black hole into the sun?". phys.org.
  2. ^ a b c d Adam Mann (13 December 2023). "Are tiny black holes hiding within giant stars?". Science. Vol. 382, no. 6676. doi:10.1126/science.zckalbq.
  3. ^ a b c d Dave Malyon (16 December 2023). "Tiny Black Holes Proposed As Dark Matter: Consumes Stars From The Inside Out With 'Observable Consequences'". KNEWZ.
  4. ^ E. Alderson (15 May 2020). "Quasi-Stars: Black Holes at the Core of the Universe's Largest Stars". Medium. 38bfbc4e1b95.

Further reading

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[edit]
  • What If There's A Black Hole Inside The Sun? | Hawking Stars. Space Time. PBS. 20 December 2023. Q6kJaMf3Lgo on YouTube.


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