Electroweak star

An electroweak star is a theoretical type of exotic star, whereby the gravitational collapse of the star is prevented by radiation pressure resulting from electroweak burning, that is, the energy released by conversion of quarks to leptons through the electroweak force. This process occurs in a volume at the star's core approximately the size of an apple, containing about two Earth masses.^[1]

The stage of life of a star that produces an electroweak star is theorized to occur after a supernova collapse. Electroweak stars are denser than quark stars, and may form when quark degeneracy pressure is no longer able to withstand gravitational attraction, but may still be withstood by electroweak burning radiation pressure. This phase of a star's life may last upwards of 10 million years.^[1]

1 See also
2 References
- 2.1 Sources
3 Further reading
4 External links

References

^ ^a ^b D. Shiga (4 January 2010). "Exotic stars may mimic big bang". New Scientist. http://www.newscientist.com/article/dn18334-exotic-stars-may-mimic-big-bang.html. Retrieved 2010-02-18.

Sources

"Theorists Propose a New Way to Shine -- And a New Kind of Star: 'Electroweak'". ScienceDaily. 15 December 2009. http://www.sciencedaily.com/releases/2009/12/091214131132.htm. Retrieved 2009-12-16.
"A New Way To Shine, A New Kind Of Star". SpaceDaily. 16 December 2009. http://www.spacedaily.com/reports/A_New_Way_To_Shine_A_New_Kind_Of_Star_999.html. Retrieved 2009-12-16.
"Theorists propose a new way to shine — and a new kind of star". Astronomy Magazine. 15 December 2009. http://www.astronomy.com/asy/default.aspx?c=a&id=8895. Retrieved 2009-12-16.
"Astronomers Predict New Class of 'Electroweak' Star"". Technology Review. 10 December 2009. http://www.technologyreview.com/blog/arxiv/24505/. Retrieved 2009-12-16.

External links

Tudor Vieru (15 December 2009). "New Type of Cosmic Objects: Electroweak Stars". Softpedia. http://news.softpedia.com/news/New-Type-of-Cosmic-Object-Electroweak-Star-129779.shtml. Retrieved 2009-12-16.

Star

Evolution	Formation Pre–main sequence Main sequence Horizontal branch Asymptotic giant branch Dredge-up Instability strip Red clump PG1159 star Mira variable Planetary nebula Protoplanetary nebula Luminous red nova Luminous blue variable Wolf–Rayet star Supernova impostor Supernova Hypernova Hertzsprung–Russell diagram Color–color diagram

Protostars	Molecular cloud H II region Bok globule Young stellar object Herbig–Haro object Hayashi track Hayashi limit Henyey track Orion T Tauri FU Orionis Herbig Ae/Be

Luminosity class	Subdwarf Dwarf Blue Red Subgiant Giant Blue Red Bright giant Supergiant Blue Red Yellow Hypergiant Yellow Blue straggler

Spectral classification	O B A F G K M Be OB Subdwarf B Late-type Peculiar Am Ap/Bp Oscillating Barium Carbon CH Extreme helium Lambda Boötis Lead Mercury-manganese S Shell Technetium

Remnants	White dwarf Black dwarf Helium planet Neutron star Pulsar Magnetar Stellar black hole Compact star Quark Exotic Stellar core: EF Eridani B

Failed and theoretical stars	Substellar object Brown dwarf Sub-brown dwarf Planetar Boson star Dark-matter star Quasistar Thorne–Żytkow object Iron star

Nucleosynthesis	Alpha process Triple-alpha process Proton–proton chain Helium flash CNO cycle Lithium burning Carbon burning Neon burning Oxygen burning Silicon burning S-process R-process Fusor Nova Remnants

Structure	Core Convection zone Microturbulence Oscillations Radiation zone Photosphere Starspot Chromosphere Corona Stellar wind Bubble Asteroseismology Eddington luminosity Kelvin–Helmholtz mechanism

Properties	Designation Dynamics Effective temperature Kinematics Magnetic field Magnitude Absolute Mass Metallicity Rotation UBV color Variability

Star systems	Binary Contact Common envelope Multiple Accretion disc Planetary system Earth's Solar System

Earth-centric observation of	Pole star Circumpolar star Magnitude Apparent Photographic Color Radial velocity Proper motion Parallax Photometric-standard star

Lists	Star names Arabic names Chinese names Most massive Least massive Largest Brightest Historical Most luminous Nearest Nearest bright Stars with exoplanets Brown dwarfs Planetary nebulae Novae Notable supernovae Supernova remnants Supernova candidates Timeline of stellar astronomy

Related articles	Planet Star cluster Association Open cluster Globular cluster Galaxy Supercluster Helioseismology Guest star Constellation Asterism Gravity Intergalactic star Infrared dark cloud

Star portal

Supernovae

Classes	Type Ia Type Ib and Ic Type II (IIP and IIL)

Related	Near-Earth supernova Supernova impostor Hypernova Quark-nova Pulsar kicks

Structure	Pair-instability supernova Supernova nucleosynthesis P-process R-process Gamma-ray burst Carbon detonation

Progenitors	Luminous blue variable Wolf–Rayet star Supergiant (Blue Red Yellow) Hypergiant (Yellow) White dwarf (Related links)

Remnants	Supernova remnant Neutron star (Pulsar Magnetar Related links) Stellar black hole (Related links) Compact star Supergiant (Quark star Exotic star)

Discovery	Guest star History of supernova observation Timeline of white dwarfs, neutron stars, and supernovae

Lists	Notable supernovae Supernova remnants Candidates Massive stars In fiction

Notable	Crab Supergiant (Crab Nebula) Tycho's Kepler's SN 1987A SN 185 SN 1006 SN 2003fg Vela Remnant Remnant G1.9+0.3 SN 2007bi

Research	Supernova Cosmology Project High-z Supernova Search Team Texas Supernova Search Nearby Supernova Factory Supernova Legacy Survey Supernova Early Warning System Monte Agliale Supernovae and Asteroid Survey Supernova/Acceleration Probe Sloan Supernova Survey

Electroweak star

Contents

See also

References

Sources

Further reading

External links