Matches in DBpedia 2016-04 for { <http://dbpedia.org/resource/Neutron_star> ?p ?o }
- Neutron_star abstract "A neutron star is a type of compact star that can result from the gravitational collapse of a massive star after a supernova. Neutron stars are the densest and smallest stars known to exist in the universe; with a radius of only about 12–13 km (7 mi), they can have a mass of about twice that of the Sun.Neutron stars are composed almost entirely of neutrons, which are subatomic particles without net electrical charge and with slightly larger mass than protons. Neutron stars are very hot and are supported against further collapse by quantum degeneracy pressure due to the phenomenon described by the Pauli exclusion principle, which states that no two neutrons (or any other fermionic particles) can occupy the same place and quantum state simultaneously.A neutron star has a mass of at least 1.1 and perhaps up to 3 solar masses (M☉), though the highest observed mass is 2.01 M☉ Neutron stars typically have a surface temperature around ~7005600000000000000♠6×105 K. Neutron stars have overall densities of 7017370000000000000♠3.7×1017 to 7017590000000000000♠5.9×1017 kg/m3 (7014260000000000000♠2.6×1014 to 7014409999999999999♠4.1×1014 times the density of the Sun), which is comparable to the approximate density of an atomic nucleus of 7017300000000000000♠3×1017 kg/m3.The neutron star's density varies from below 7009100000000000000♠1×109 kg/m3 in the crust—increasing with depth—to above 7017600000000000000♠6×1017 or 7017800000000000000♠8×1017 kg/m3 deeper inside (denser than an atomic nucleus). A normal-sized matchbox containing neutron-star material would have a mass of approximately 5 trillion tons or ~1000 km3 of Earth rock.In general, compact stars of less than 1.39 M☉ (the Chandrasekhar limit) are white dwarfs, whereas compact stars with a mass between 1.4 M☉ and 3 M☉ (the Tolman–Oppenheimer–Volkoff limit) should be neutron stars. The maximum observed mass of neutron stars is about 2 M☉. The smallest observed mass of a stellar black hole is about 5 M☉, though compact stars with more than 10 M☉ will overcome the neutron degeneracy pressure and gravitational collapse will usually occur to produce a black hole. Between 3 M☉ and 5 M☉, hypothetical intermediate-mass stars such as quark stars and electroweak stars have been proposed, but none have been shown to exist. The equations of state of matter at such high densities are not precisely known because of the theoretical and empirical difficulties.Some neutron stars rotate very rapidly (up to 716 times a second, or approximately 43,000 revolutions per minute) and emit beams of electromagnetic radiation as pulsars. Indeed, the discovery of pulsars in 1967 first suggested that neutron stars exist.Gamma-ray bursts may be produced from rapidly rotating, high-mass stars that collapse to form a neutron star, or from the merger of binary neutron stars. There are thought to be on the order of 108 neutron stars in the galaxy, but they can only be easily detected in certain instances, such as if they are a pulsar or part of a binary system. Non-rotating and non-accreting neutron stars are virtually undetectable; however, the Hubble Space Telescope has observed one thermally radiating neutron star, called RX J185635-3754.".
- Neutron_star thumbnail PIA18848-PSRB1509-58-ChandraXRay-WiseIR-20141023.jpg?width=300.
- Neutron_star wikiPageExternalLink pulsars.html.
- Neutron_star wikiPageExternalLink sb040806-1.htm.
- Neutron_star wikiPageExternalLink nstar.html.
- Neutron_star wikiPageExternalLink 0309041.
- Neutron_star wikiPageExternalLink article.ns?id=dn9397&feedId=online-news_rss20.
- Neutron_star wikiPageExternalLink dn9428-massive-neutron-star-rules-out-exotic-matter.html.
- Neutron_star wikiPageExternalLink NASA_Sees_Hidden_Structure_Of_Neutron_Star_In_Starquake.html.
- Neutron_star wikiPageExternalLink NStarErrata.html.
- Neutron_star wikiPageExternalLink dn9730-neutron-star-clocked-at-mind-boggling-velocity.
- Neutron_star wikiPageID "21869".
- Neutron_star wikiPageLength "42515".
- Neutron_star wikiPageOutDegree "224".
- Neutron_star wikiPageRevisionID "707425634".
- Neutron_star wikiPageWikiLink Accretion_(astrophysics).
- Neutron_star wikiPageWikiLink Albert_Einstein.
- Neutron_star wikiPageWikiLink Angular_momentum.
- Neutron_star wikiPageWikiLink Anomalous_X-ray_pulsar.
- Neutron_star wikiPageWikiLink Antony_Hewish.
- Neutron_star wikiPageWikiLink Asteroseismology.
- Neutron_star wikiPageWikiLink Atomic_nucleus.
- Neutron_star wikiPageWikiLink Binary_pulsar.
- Neutron_star wikiPageWikiLink Binary_star.
- Neutron_star wikiPageWikiLink Binary_system.
- Neutron_star wikiPageWikiLink Binding_energy.
- Neutron_star wikiPageWikiLink Black_hole.
- Neutron_star wikiPageWikiLink Calvera_(X-ray_source).
- Neutron_star wikiPageWikiLink Category:Articles_containing_video_clips.
- Neutron_star wikiPageWikiLink Category:Exotic_matter.
- Neutron_star wikiPageWikiLink Category:Neutron.
- Neutron_star wikiPageWikiLink Category:Neutron_stars.
- Neutron_star wikiPageWikiLink Category:Star_types.
- Neutron_star wikiPageWikiLink Centaurus.
- Neutron_star wikiPageWikiLink Centaurus_X-3.
- Neutron_star wikiPageWikiLink Chandra_X-ray_Observatory.
- Neutron_star wikiPageWikiLink Chandrasekhar_limit.
- Neutron_star wikiPageWikiLink Chemical_element.
- Neutron_star wikiPageWikiLink Compact_star.
- Neutron_star wikiPageWikiLink Constellation.
- Neutron_star wikiPageWikiLink Crab_Nebula.
- Neutron_star wikiPageWikiLink Crab_Pulsar.
- Neutron_star wikiPageWikiLink Degenerate_matter.
- Neutron_star wikiPageWikiLink Donald_C._Backer.
- Neutron_star wikiPageWikiLink Down_quark.
- Neutron_star wikiPageWikiLink Dragons_Egg.
- Neutron_star wikiPageWikiLink Earth.
- Neutron_star wikiPageWikiLink Electric_charge.
- Neutron_star wikiPageWikiLink Electron.
- Neutron_star wikiPageWikiLink Electron_capture.
- Neutron_star wikiPageWikiLink Electroweak_star.
- Neutron_star wikiPageWikiLink Equation_of_state.
- Neutron_star wikiPageWikiLink Escape_velocity.
- Neutron_star wikiPageWikiLink Exotic_star.
- Neutron_star wikiPageWikiLink Fermion.
- Neutron_star wikiPageWikiLink Franco_Pacini.
- Neutron_star wikiPageWikiLink Fritz_Zwicky.
- Neutron_star wikiPageWikiLink Gamma-ray_burst.
- Neutron_star wikiPageWikiLink General_relativity.
- Neutron_star wikiPageWikiLink Glitch_(astronomy).
- Neutron_star wikiPageWikiLink Gold.
- Neutron_star wikiPageWikiLink Gravitational_binding_energy.
- Neutron_star wikiPageWikiLink Gravitational_collapse.
- Neutron_star wikiPageWikiLink Gravitational_lens.
- Neutron_star wikiPageWikiLink Gravitational_wave.
- Neutron_star wikiPageWikiLink Gravity.
- Neutron_star wikiPageWikiLink Great_Pyramid_of_Giza.
- Neutron_star wikiPageWikiLink Helium.
- Neutron_star wikiPageWikiLink Hubble_Space_Telescope.
- Neutron_star wikiPageWikiLink Hulse–Taylor_binary.
- Neutron_star wikiPageWikiLink Hydrogen.
- Neutron_star wikiPageWikiLink Interstellar_medium.
- Neutron_star wikiPageWikiLink Iosif_Shklovsky.
- Neutron_star wikiPageWikiLink Iron.
- Neutron_star wikiPageWikiLink James_Chadwick.
- Neutron_star wikiPageWikiLink Jocelyn_Bell_Burnell.
- Neutron_star wikiPageWikiLink John_Antoniadis.
- Neutron_star wikiPageWikiLink Joseph_Hooton_Taylor,_Jr..
- Neutron_star wikiPageWikiLink Kaon.
- Neutron_star wikiPageWikiLink Kelvin.
- Neutron_star wikiPageWikiLink Lev_Landau.
- Neutron_star wikiPageWikiLink Light-year.
- Neutron_star wikiPageWikiLink Litre.
- Neutron_star wikiPageWikiLink Magellanic_Clouds.
- Neutron_star wikiPageWikiLink Magnetar.
- Neutron_star wikiPageWikiLink Main_sequence.
- Neutron_star wikiPageWikiLink Marta_Burgay.
- Neutron_star wikiPageWikiLink Mass.
- Neutron_star wikiPageWikiLink Microsecond.
- Neutron_star wikiPageWikiLink Milky_Way.
- Neutron_star wikiPageWikiLink Millisecond_pulsar.
- Neutron_star wikiPageWikiLink Moment_of_inertia.
- Neutron_star wikiPageWikiLink Neutrino.
- Neutron_star wikiPageWikiLink Neutron.
- Neutron_star wikiPageWikiLink Neutron-star_oscillation.
- Neutron_star wikiPageWikiLink Neutron_star_spin-up.
- Neutron_star wikiPageWikiLink Neutronium.
- Neutron_star wikiPageWikiLink Nobel_Prize_in_Physics.
- Neutron_star wikiPageWikiLink Nuclear_drip_line.
- Neutron_star wikiPageWikiLink Nuclear_pasta.