DBpedia – Linked Data Fragments

Matches in DBpedia 2016-04 for { <http://wikidata.dbpedia.org/resource/Q4202> ?p ?o }

• Q4202 subject Q6864552.
• Q4202 subject Q7033757.
• Q4202 subject Q7045562.
• Q4202 subject Q8266666.
• Q4202 subject Q8430682.
• Q4202 abstract "Template:ForA 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 11–11.5 km (7 miles), they can have a mass of about twice that of the Sun.Neutron stars are composed almost entirely of neutrons, which are subatomic particles with no 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☉. Compact stars with more than 10 M☉ will overcome the neutron degeneracy pressure and gravitational collapse will usually occur to produce a black hole, though the smallest observed mass of a stellar black hole is about 5 M☉. 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 (see quantum gravity).Some neutron stars rotate very rapidly (up to 716 times a second, or approximately 43,000 revolutions per minute, giving a linear speed at the surface on the order of 6999165000000000000♠0.165 c) 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 around 100 million neutron stars in the Milky Way, a figure obtained by estimating the number of stars that have gone supernova. However, most are old and cold, and neutron stars 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.".
• Q4202 thumbnail PIA18848-PSRB1509-58-ChandraXRay-WiseIR-20141023.jpg?width=300.
• Q4202 wikiPageExternalLink pulsars.html.
• Q4202 wikiPageExternalLink sb040806-1.htm.
• Q4202 wikiPageExternalLink nstar.html.
• Q4202 wikiPageExternalLink 0309041.
• Q4202 wikiPageExternalLink article.ns?id=dn9397&feedId=online-news_rss20.
• Q4202 wikiPageExternalLink dn9428-massive-neutron-star-rules-out-exotic-matter.html.
• Q4202 wikiPageExternalLink NASA_Sees_Hidden_Structure_Of_Neutron_Star_In_Starquake.html.
• Q4202 wikiPageExternalLink NStarErrata.html.
• Q4202 wikiPageExternalLink dn9730-neutron-star-clocked-at-mind-boggling-velocity.
• Q4202 wikiPageWikiLink Q1.
• Q4202 wikiPageWikiLink Q102165.
• Q4202 wikiPageWikiLink Q1044623.
• Q4202 wikiPageWikiLink Q1047034.
• Q4202 wikiPageWikiLink Q1049029.
• Q4202 wikiPageWikiLink Q106667.
• Q4202 wikiPageWikiLink Q10934.
• Q4202 wikiPageWikiLink Q109910.
• Q4202 wikiPageWikiLink Q1111.
• Q4202 wikiPageWikiLink Q11344.
• Q4202 wikiPageWikiLink Q1139232.
• Q4202 wikiPageWikiLink Q11412.
• Q4202 wikiPageWikiLink Q11415.
• Q4202 wikiPageWikiLink Q1141611.
• Q4202 wikiPageWikiLink Q11423.
• Q4202 wikiPageWikiLink Q11452.
• Q4202 wikiPageWikiLink Q11455.
• Q4202 wikiPageWikiLink Q1150817.
• Q4202 wikiPageWikiLink Q1151937.
• Q4202 wikiPageWikiLink Q1151964.
• Q4202 wikiPageWikiLink Q115462.
• Q4202 wikiPageWikiLink Q11579.
• Q4202 wikiPageWikiLink Q11582.
• Q4202 wikiPageWikiLink Q1191085.
• Q4202 wikiPageWikiLink Q1195471.
• Q4202 wikiPageWikiLink Q119583.
• Q4202 wikiPageWikiLink Q12354166.
• Q4202 wikiPageWikiLink Q1290780.
• Q4202 wikiPageWikiLink Q131594.
• Q4202 wikiPageWikiLink Q1319794.
• Q4202 wikiPageWikiLink Q1319958.
• Q4202 wikiPageWikiLink Q1331626.
• Q4202 wikiPageWikiLink Q133267.
• Q4202 wikiPageWikiLink Q13416892.
• Q4202 wikiPageWikiLink Q1344018.
• Q4202 wikiPageWikiLink Q13590494.
• Q4202 wikiPageWikiLink Q1387203.
• Q4202 wikiPageWikiLink Q1394769.
• Q4202 wikiPageWikiLink Q1439816.
• Q4202 wikiPageWikiLink Q15218857.
• Q4202 wikiPageWikiLink Q1547424.
• Q4202 wikiPageWikiLink Q155920.
• Q4202 wikiPageWikiLink Q156286.
• Q4202 wikiPageWikiLink Q161254.
• Q4202 wikiPageWikiLink Q165618.
• Q4202 wikiPageWikiLink Q166530.
• Q4202 wikiPageWikiLink Q17117332.
• Q4202 wikiPageWikiLink Q1727710.
• Q4202 wikiPageWikiLink Q1758384.
• Q4202 wikiPageWikiLink Q180892.
• Q4202 wikiPageWikiLink Q1848968.
• Q4202 wikiPageWikiLink Q185243.
• Q4202 wikiPageWikiLink Q185918.
• Q4202 wikiPageWikiLink Q186481.
• Q4202 wikiPageWikiLink Q1894471.
• Q4202 wikiPageWikiLink Q189990.
• Q4202 wikiPageWikiLink Q190035.
• Q4202 wikiPageWikiLink Q190426.
• Q4202 wikiPageWikiLink Q19069.
• Q4202 wikiPageWikiLink Q191118.
• Q4202 wikiPageWikiLink Q192685.
• Q4202 wikiPageWikiLink Q1940232.
• Q4202 wikiPageWikiLink Q2.
• Q4202 wikiPageWikiLink Q206037.
• Q4202 wikiPageWikiLink Q208395.
• Q4202 wikiPageWikiLink Q2111.
• Q4202 wikiPageWikiLink Q2126.
• Q4202 wikiPageWikiLink Q214967.
• Q4202 wikiPageWikiLink Q22247.
• Q4202 wikiPageWikiLink Q2225.
• Q4202 wikiPageWikiLink Q2269733.
• Q4202 wikiPageWikiLink Q2294.
• Q4202 wikiPageWikiLink Q230883.
• Q4202 wikiPageWikiLink Q233974.
• Q4202 wikiPageWikiLink Q234181.
• Q4202 wikiPageWikiLink Q2348.
• Q4202 wikiPageWikiLink Q2361910.
• Q4202 wikiPageWikiLink Q2511333.
• Q4202 wikiPageWikiLink Q2513.
• Q4202 wikiPageWikiLink Q2568452.
• Q4202 wikiPageWikiLink Q2692116.
• Q4202 wikiPageWikiLink Q2755153.
• Q4202 wikiPageWikiLink Q2979836.
• Q4202 wikiPageWikiLink Q2985002.

• next