Hawking star

Short description: Theoretical type of star

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]

References

↑ Max Planck Society (22 December 2023). "What happens if you put a black hole into the sun?". phys.org. https://phys.org/news/2023-12-black-hole-sun-1.html.
↑ ^2.0 ^2.1 ^2.2 ^2.3 Adam Mann (13 December 2023). "Are tiny black holes hiding within giant stars?". Science 382 (6676). doi:10.1126/science.zckalbq. https://www.science.org/content/article/are-tiny-black-holes-hiding-within-giant-stars.
↑ ^3.0 ^3.1 ^3.2 ^3.3 Dave Malyon (16 December 2023). "Tiny Black Holes Proposed As Dark Matter: Consumes Stars From The Inside Out With 'Observable Consequences'". KNEWZ. https://knewz.com/tiny-black-holes-dark-matter-consuming-stars/.
↑ E. Alderson (15 May 2020). "Quasi-Stars: Black Holes at the Core of the Universe's Largest Stars". Medium. 38bfbc4e1b95. https://medium.com/predict/quasi-stars-black-holes-at-the-core-of-the-universes-largest-stars-38bfbc4e1b95.

External links

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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[PhysOrg-2023-12-black-hole-sun-1-1] Max Planck Society (22 December 2023). "What happens if you put a black hole into the sun?". phys.org. https://phys.org/news/2023-12-black-hole-sun-1.html.

[10.1126/science.zckalbq-2] 2.0 ^2.1 ^2.2 ^2.3 Adam Mann (13 December 2023). "Are tiny black holes hiding within giant stars?". Science 382 (6676). doi:10.1126/science.zckalbq. https://www.science.org/content/article/are-tiny-black-holes-hiding-within-giant-stars.

[KNEWZ-20231216-3] 3.0 ^3.1 ^3.2 ^3.3 Dave Malyon (16 December 2023). "Tiny Black Holes Proposed As Dark Matter: Consumes Stars From The Inside Out With 'Observable Consequences'". KNEWZ. https://knewz.com/tiny-black-holes-dark-matter-consuming-stars/.

[Medium-38bfbc4e1b95-4] E. Alderson (15 May 2020). "Quasi-Stars: Black Holes at the Core of the Universe's Largest Stars". Medium. 38bfbc4e1b95. https://medium.com/predict/quasi-stars-black-holes-at-the-core-of-the-universes-largest-stars-38bfbc4e1b95.

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v t e Black holes
Types	Schwarzschild Rotating Charged Virtual Kugelblitz Primordial Planck particle
Size	Micro Extremal Electron Stellar Microquasar Intermediate-mass Supermassive Active galactic nucleus Quasar Blazar
Formation	Stellar evolution Gravitational collapse Neutron star Related links Tolman–Oppenheimer–Volkoff limit White dwarf Related links Supernova Related links Hypernova Gamma-ray burst Binary black hole
Properties	Gravitational singularity Ring singularity Theorems Event horizon Photon sphere Innermost stable circular orbit Ergosphere Penrose process Blandford–Znajek process Accretion disk Hawking radiation Gravitational lens Bondi accretion M–sigma relation Quasi-periodic oscillation Thermodynamics Immirzi parameter Schwarzschild radius Spaghettification
Issues	Black hole complementarity Information paradox Cosmic censorship ER=EPR Final parsec problem Firewall (physics) Holographic principle No-hair theorem
Metrics	Schwarzschild (Derivation) Kerr Reissner–Nordström Kerr–Newman Hayward
Alternatives	Nonsingular black hole models Black star Dark star Dark-energy star Gravastar Magnetospheric eternally collapsing object Planck star Q star Fuzzball
Analogs	Optical black hole Sonic black hole
Lists	Black holes Most massive Nearest Quasars Microquasars
Related	Black Hole Initiative Black hole starship Compact star Exotic star Quark star Preon star Gamma-ray burst progenitors Gravity well Hypercompact stellar system Membrane paradigm Naked singularity Quasi-star Rossi X-ray Timing Explorer Timeline of black hole physics White hole Wormhole
Category Commons

v t e Stars
Formation	Accretion Molecular cloud Bok globule Young stellar object Protostar Pre-main-sequence Herbig Ae/Be T Tauri FU Orionis Herbig–Haro object Hayashi track Henyey track
Evolution	Main sequence Red-giant branch Horizontal branch Red clump Asymptotic giant branch Blue loop Protoplanetary nebula Planetary nebula PG1159 Dredge-up Instability strip Luminous blue variable Blue straggler Stellar population Supernova Superluminous supernova / Hypernova
Spectral classification	Early Late Main sequence O B A F G K M Brown dwarf WR OB Subdwarf O B Subgiant Giant Blue Red Yellow Bright giant Supergiant Blue Red Yellow Hypergiant Yellow Carbon S CN CH White dwarf Chemically peculiar Am Ap/Bp HgMn Helium-weak Barium Extreme helium Lambda Boötis Lead Technetium Be Shell B[e]
Remnants	White dwarf Helium planet Black dwarf Neutron Radio-quiet Pulsar Binary X-ray Magnetar Stellar black hole X-ray binary Burster
Hypothetical	Blue dwarf Green Black dwarf Exotic Boson Electroweak Strange Preon Planck Dark Dark-energy Quark Q Black Gravastar Frozen Quasi-star Thorne–Żytkow object Iron Blitzar
Stellar nucleosynthesis	Deuterium burning Lithium burning Proton–proton chain CNO cycle Helium flash Triple-alpha process Alpha process Carbon burning Neon burning Oxygen burning Silicon burning S-process R-process Fusor Nova Symbiotic Remnant Luminous red nova
Structure	Core Convection zone Microturbulence Oscillations Radiation zone Atmosphere Photosphere Starspot Chromosphere Corona Stellar wind Bubble Bipolar outflow Accretion disk Asteroseismology Helioseismology Eddington luminosity Kelvin–Helmholtz mechanism
Properties	Designation Dynamics Effective temperature Luminosity Kinematics Magnetic field Absolute magnitude Mass Metallicity Rotation Starlight Variable Photometric system Color index Hertzsprung–Russell diagram Color–color diagram
Star systems	Binary Contact Common envelope Eclipsing Symbiotic Multiple Cluster Open Globular Super Planetary system
Earth-centric observations	Sun Solar System Sunlight Pole star Circumpolar Constellation Asterism Magnitude Apparent Extinction Photographic Radial velocity Proper motion Parallax Photometric-standard
Lists	Proper names Arabic Chinese Extremes Most massive Highest temperature Largest volume Smallest volume Brightest Historical Most luminous Nearest Nearest bright With exoplanets Brown dwarfs White dwarfs Milky Way novae Supernovae Candidates Remnants Planetary nebulae Timeline of stellar astronomy
Related articles	Substellar object Brown dwarf Sub-brown dwarf Planet Galactic year Galaxy Guest Gravity Intergalactic Starfield Tidal disruption event
'Category:Stars · '

Hawking star

Topic: Astronomy

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