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A strange star or quark star is a hypothetical type of star composed of strange matter, or quark matter. This is an ultra-dense phase of matter that is theorized to form inside particularly massive neutron stars. The Pleiades star cluster A star is a massive, compact body of plasma in outer space that is currently producing or has produced energy through nuclear fusion. ...
Strange matter is an ultra-dense phase of matter that is theorized to form inside particularly massive neutron stars. ...
Quark Matter refers to any of a number of phases of matter built out of quarks and gluons. ...
In the physical sciences, a phase is a set of states of a macroscopic physical system that have relatively uniform chemical composition and physical properties (i. ...
A neutron star is one of the few possible endpoints of stellar evolution. ...
It is theorized that when the neutronium which makes up a neutron star is put under sufficient pressure due to the star's gravity, the individual neutrons break down and their constituent quarks. Some of these quarks may become strange quarks and then form strange matter. The star then becomes known as a "strange star" or "quark star". Neutronium is a term used in science fiction and popular literature to refer to an extremely dense phase of matter composed primarily of neutrons. ...
Gravity is a force of attraction that acts between bodies that have mass. ...
Properties In physics, the neutron is a subatomic particle with no net electric charge and a mass of 939. ...
Quarks are one of the two basic constituents of matter in the Standard Model of particle physics. ...
The strange quark is a second-generation quark with a charge of -(1/3)e and a strangeness of −1. ...
Strange star
Strange matter is composed of up quarks, down quarks and strange quarks bound to each other directly, in a similar manner to how neutronium is composed of neutrons; a strange star is essentially a single gigantic hadron. A strange star lies between neutron stars and black holes in terms of both mass and density, and if sufficient additional matter is added to a strange star it will collapse into a black hole as well. The up quark is a first-generation quark with a charge of +(2/3)e. ...
For other uses of this term, see: Quark (disambiguation) 1974 discovery photograph of a possible charmed baryon, now identified as the Σc++ In particle physics, the quarks are subatomic particles thought to be elemental and indivisible. ...
For other uses of this term, see: Quark (disambiguation) 1974 discovery photograph of a possible charmed baryon, now identified as the Σc++ In particle physics, the quarks are subatomic particles thought to be elemental and indivisible. ...
In particle physics, a hadron is a subatomic particle which experiences the strong nuclear force. ...
A black hole is a concentration of mass great enough that the force of gravity prevents anything past its event horizon from escaping it except through quantum tunnelling behaviour (known as Hawking Radiation). ...
Strange matter is one candidate for the theoretical dark matter that is a feature of several cosmological theories. In cosmology, dark matter refers to matter particles, of unknown composition, that do not emit or reflect enough electromagnetic radiation to be detected directly, but whose presence can be inferred from gravitational effects on visible matter such as stars and galaxies. ...
Cosmology is the study of the large-scale structure and history of the universe. ...
Recent theoretical research has found mechanisms by which quark stars with "strange quark nuggets" may decrease the objects' electric fields and densities from previous theoretical expectations, causing such stars to appear very much like--nearly indistinguishable from--neutron stars (Jaikumar et al. 2006). However, the team made some fundamental assumptions that led to uncertainties in their theory large enough that the case for it is not yet solid. More research, both observational and theoretical, remains to be done on strange stars in the future.
Quark star A quark star may be formed from a neutron star through a process called quark de-confinement. It is in this process that produces the quark nova. The resultant star should have free quarks in its interior. The deconfinement process should release immense amounts of energy, perhaps being the most energic explosions in existence. It may be that gamma ray bursts are indeed quark-novae. A quark-nova is a type of nova that theoretically can occur when a neutron star spontaneously collapses to become a quark star. ...
In astronomy, gamma-ray bursts (GRBs) are flashes of gamma rays that last from seconds to hours, the longer ones being followed by several days of X-ray afterglow. ...
Neutron stars with masses of 1.5 - 1.8 solar masses with rapid spin are theoretically the best candidates for conversion. This amounts to 1% of the projected neutron star population. An extrapolation based on this indicates that up to 2 quark-novae may occur in the Milky Way each day. This would mean that there is a large population of quark stars in our galaxy.
Theoretically quark stars may be radio quiet, so radio-quiet neutron stars may be quark stars. A radio-quiet neutron star is a neutron star that does not seem to emit radio emissions like most other neutron stars. ...
Observed overdense neutron stars Strange stars and quark stars are largely theoretical at this point, but observations released by the Chandra X-Ray Observatory on April 10, 2002 detected two candidates, designated RX J1856.5-3754 and 3C58, which had previously been thought to be neutron stars. Based on the known laws of physics, the former appeared much smaller and the latter much colder than they should, suggesting that they are composed of material denser than neutronium. However, these observations have been under attack by researchers who say the results were not conclusive; it remains to be seen how the question of strange star or quark star existence will play out. For other uses, see Chandra (disambiguation). ...
April 10 is the 100th day of the year in the Gregorian calendar (101st in leap years). ...
For album titles with the same name, see 2002 (album). ...
RX J1856. ...
an X-Ray image of 3C58 from the orbiting Chandra X-Ray Observatory. ...
See also Quark matter or QCD matter refers to any of a number of phases of matter whose degrees of freedom include quarks and gluons. ...
Strange matter is an ultra-dense phase of matter that is theorized to form inside particularly massive neutron stars. ...
A quark-gluon plasma (QGP) is a phase of quantum chromodynamics (QCD) which exists at extremely high temperature and density. ...
Quantum chromodynamics (QCD) is the theory of the strong interaction, a fundamental force describing the interactions of the quarks and gluons found in nucleons (such as the proton and neutron). ...
This article is about the celestial body. ...
Neutronium is a term used in science fiction and popular literature to refer to an extremely dense phase of matter composed primarily of neutrons. ...
Degenerate matter is matter which has sufficiently high density that the dominant contribution to its pressure arises from the Pauli exclusion principle. ...
Properties In physics, the neutron is a subatomic particle with no net electric charge and a mass of 939. ...
A preon star is a hypothetical compact star made of preons, a group of theoretical subatomic particles that may compose quarks and leptons. ...
In particle physics, preons are postulated point-like particles, that are subparticles of quarks and leptons. ...
Degenerate matter is matter which has sufficiently high density that the dominant contribution to its pressure arises from the Pauli exclusion principle. ...
In particle physics, Preons are postulated pointlike particles, that are subparticles of quarks and leptons. ...
A quark-nova is a type of nova that theoretically can occur when a neutron star spontaneously collapses to become a quark star. ...
External links - Neutron Star/Quark Star Interior (image to print)
- Quark star glimmers Nature 11 April 2002
- Debate sparked on quark stars
- Popular Science: Wish Upon a Quark Star
- Astro-ph: Is RX J185635-375 a Quark Star?
- Curious About Astronomy: What process would bring about a quark star?
- Astonomy Picture of the Day 14 April 2002 - RX J185635-375: Candidate Quark Star (med billede)
- Wired News: Quarks or Quirky Neutron Stars? 19 April 2002
- NASA, Ask A High Energy Astronomer: Strange Quark Stars
- Nucl-Th: The Strange Star Surface: A Crust with Nuggets
- PhysOrg: Seeing "Strange" Stars
- Quark Stars Could Produce Biggest Bang (SpaceDaily) Jun 7, 2006
- Meissner Effect in Quark Stars (University of Calgary)
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