All stars derive their energy through the thermonuclear fusion of light elements in to heavy elements. High temperatures are required so that the mutual electrostatic repulsion of the protons in each fusing atomic nucleus is overcome. ... Elements with more protons in their nuclei require higher temperatures. ... This sequence is now shown in the animation below. ... First Step of the Proton-Proton Chain Narration . Second Step of the Proton-Proton Chain Narration . ...

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What happens to a star heavier than five solar masses? ... Stars about ten solar masses probably behave like our five solar mass star until they reach the end of core-helium burning. ... The Crab nebula was formed after a massive explosion ripped a star apart in 1054. ... Today, the glowing outer layers of the star are still rushing away from a tiny star in the centre. ... An incredible explosion rips through the outer layers of the star, releasing colossal amounts of energy in a supernova explosion. ...

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Constraining properties of dense matter with precision radio timing measurements Bennett Link What spin variations have revealed about: Ї the ground state of NS matter Ї its dynamics Future directions (and wishes) The central question of nuclear physics What are the properties of matter above nuclear density (~ 3в1014 g cm-3)? ... The NS ground state (according to theory) >n=2.8в1014 g cm-3 superfluid neutrons Predictions: Most of the interior is liquid, with SF neutrons + SC protons (type II) ? ...

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... Motivation Probe matter at nuclear densities Condensed proton/neutron states Exotic QCD states? Pulsar glitch recovery Two stages: Sudden increase in frequency ( 100s) Recovery (~days) Recovery typically parameterized by (t ) = n n e -t / t n + p Modelling glitch recovery Hydrodynamic (viscous fluid interior) Relaxation of differential rotation between crust and fluid No assumptions about the microphysics Ekman ...

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... So at T 10 at T=10 10.5 (t 0.2s) 10.5 (t = 0.2s) (t 0.9s) So at T~10 10.14 End up with mainly protons, neutrons and electrons (some neutrinos) when Universe is 1 second old With ratio of N/P set as Neutrons decay with half-life of 887 seconds Formation/Destruction of Deuterium Neutrons converted to D at roughly 200s From Saha equation (but Neutron Except those neutrons that decay .. ... A bit less 28%*exp(-100s/900s) =24% when one takes into account neutron decay.. ...

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WORK CONDUCTED AT RSC ENERGIA . TO DEVELOP NUCLEAR ELECTRIC ROCKET ENGINES . ... The use of nuclear reactors as power plants for electrical rocket engines (RSC Energia concept till 1988) necessitated the development of a high-power Nuclear Power Plant (NPP) based on lithium-niobium technology. ... The electric power source is a fast neutron thermal emission reactor/converter with thermal emission converters of heat into electrical power built into its active zone; . ... MARTION MISSION | ...

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This data is derived from the 1986 CODATA recommended values of the fundamental physical constants. ... Constant . ... Newtonian constant of gravitation . ... Planck constant . ... Planck mass . ... Magnetic flux quantum . ... Fine structure constant . ... Inverse fine structure constant . ... Rydberg constant . ... Rydberg constant in joules . ... Electron magnetic moment . ... Electron magnetic moment in Bohr magnetons . ... Muon magnetic moment . ... Atomic mass constant . ... 3.091 Home Page ...

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Neutron Monitors ] [ Solar Neutrons ] [ Muon Telescopes ] [ Base Potchefstroom University ] [ Magnetometers ] [ GPS systems ] [ Ionosphere ] [ Related Data ] [ Space Weather ] . ... All Cosmic Ray Stations + InterPlanetary Data: WorldNet . Alma-AtaB (Mt.Tien Shan) DataBase of Kazakhstan Spectrograph Alma-AtaB (Mt.Tien Shan) new . ... Nagoya Muon Telescope and DATA or mail . ... Belgrade Muon Telescopes and DATA or ">mail . ... Real-Time database for Cosmic Ray Anisotropy (DB10) . ...

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Find Similar Abstracts . ... Astrophysics . ... ASTROPHYSICS, COSMOLOGY, ELEMENTARY PARTICLE INTERACTIONS, NUCLEAR PHYSICS, UNIVERSE, ASTRONOMICAL MODELS, ASTRONOMICAL SPECTROSCOPY, ATOMIC PHYSICS, BLACK HOLES (ASTRONOMY), NEUTRON STARS, NUCLEAR ASTROPHYSICS, NUCLEAR ENERGY, NUCLEAR EXPLOSIONS, NUCLEAR FISSION, RELATIVISTIC THEORY, STELLAR MASS ACCRETION, URANIUM . ... A selection of papers on nuclear physics, elementary particle physics, and astrophysics is presented. ...

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Обзоры hep-ph: тематический рубрикатор . ... Authors: O.V. Teryaev . Comments: 6 pages, contribution to The XVI International Baldin Seminar on High Energy Physics Problems ``Relativistic Nuclear Physics and Quantum Chromodynamics'', Dubna, June 10-15, 2002, to be published in the Proceedings . ... В этом небольшом докладе он вводит в рассмотрение обобщенные спиновые правила сумм для протона, нейтрона и дейтрона. ... Comments: 20 pages, 7 figures. ... Вернуться в тематический рубрикатор hep-ph ...

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Main parameters of Gamma Ray Spectrometer . Parts of GRS facility . ... Gamma Ray Spectrometer [GRS] with cooled germanium detector . ... Spectroscopy of gamma-ray emission from Mars in 16000 channels at the energy range 300-8000 keV; . Neutron Spectrometer - [NS] . ... High Energy Neutron Detector - [HEND] . ... Scintillation detector for fast neutrons at energies 1,0 ?10,0 MeV, for gamma-rays at energy range 60 keV ? 2 MeV and for hard X-rays at energy range 30 keV ? 1 MeV; . ...

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... Studying of nuclear radiation from martian subsurface based on HEND data " . ... The presentation is based on speaker's doctoral thesis and contains results of observations of Martian neutron albedo from Russian High Energy Neutron Detector onboard 2001 Mars Odyssey in 2002-2004 years. ... HEND neutron maps of martian polar permafrost regions with high content of water ice. ... The numerical model of martian subsurface and estimation of water content in polar and equatorial regions of Mars. ...

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Bigbang Forum Message . Forums: . ... The Sun Energy Source Is Not Nuclear Fusion But Magnetic Fields. ... The sun is not heated by fusion reaction but by magnetic fields coming from the galactic center. The nuclear fusion is a by product of the magnetic fields heating. ... www.astronomy.net . About Astronomy Net | Advertise on Astronomy Net | ... Forum posts are Copyright their authors as specified in the heading above the post. "dbHTML," "AstroGuide," "ASTRONOMY.NET" & "VA.NET" . ...

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• If The Sun's Nuclear Furnace Stopped What Would Happen. - an Astronomy Net

... Pulsar Wind in the Vela Nebula . ... 19.07.2001 . ... Credit Copyright: CXC , SAO , NASA Explanation: The Vela pulsar was born 10,000 years ago at the center of a supernova -- an exploding star . ... This view spans about 6 light-years across the central region of the much larger Vela supernova remnant . ... July 2001 . ... Publications with keywords: supernova remnant - Vela - pulsar . Publications with words: supernova remnant - Vela - pulsar . ... RCW 86: Historical Supernova Remnant . ...

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... Observing . ... Star Atlas . ... stars . ... Probing extreme matter through observations of neutron stars . ... NEUTRON STARS | ... These results constrain how nuclear matter т?? protons and neutrons and their constituent quarks т?? interact under the extreme conditions found in neutron stars. ... They used a similar procedure for Chandra observations of a neutron star in another globular cluster, NGC 6397, and for two other neutron stars in clusters that ESAт??s XMM-Newton observed. ...

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Institute of Nuclear Physics Russian Akademy of Sciences BAKSAN (KABARDINO-BALKARIYA,tower ELBRUS), RUSSIA BAKSAN ( BKSN ), 6 NM64 NEUTRON MONITOR (REMOVED FROM NLC2) CORRECTED FOR PRESSURE Altitude 1700 M Mean= 4708.4 May 2007 Geographic Coordinates ... (1965)= 5.6 GV; SF= 100 Pressure Coefficient= -0.73 %/mb Corrected to 820 mb Standard Pressure Comment: 1.000 4706 4704 4696 4682 4699 4705 4711 4727 4714 4705 4707 4733 4705 4722 4727 4721 4702 4703 4707 4703 4703 4693 4684 ...

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On this page you can compute thermodynamics, opacity and nuclear reaction rates for conditions which exist inside the Sun. ... Logarithmic partial derivative dlogP/dlogT (hi_t) . Logarithmic partial derivative dlogP/dlogRHO (hi_rho) . Logarithmic partial derivative dlogP/dlogX (hi_x) . Logarithmic partial derivative dlogU/dlogT (ksi_t) . ... Input field size does not limit the amount of data entered; you can type or paste thousands of lines (10,000 lines tested with output size over 5MB). ...

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... Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer. 2002 October 16 . Oklo: Ancient African Nuclear Reactors . ... Explanation: The remnants of nuclear reactors nearly two billion years old were found in the 1970s in Africa. These reactors are thought to have occurred naturally. ... Pictured above is Fossil Reactor 15, located in Oklo, Gabon . ... About APOD | ... NASA Technical Rep.: ...

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Astronotes Armagh Planetarium's Stellar Blog! ... Armagh Planetarium . ... Space Flight . Human Exploration . ... Posted on October 1, 2010 | 3 Comments NASA?s next manned spacecraft will be the Orion, a capsule which will be carried into space by a rocket. ... Continue Reading.. ... Nuclear power and space travel were both cool and wonderful new technologies. ... Here you will find the latest news and views from the fascinating worlds of astronomy and space exploration. ...

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90% H II regions/H II nuclei. We also find that, compared to starbursting nuclei, extranuclear regions typically separate even further from AGNs, especially for low-metallicity extranuclear environments. ... ADS Citation Query . citations = 109 . citations vs. year [year,citations] . 2006,2][2007,19][2008,17][2009,18][2010,18][2011,9][2012,10][2013,6][2014,4][2015,6] . Copyright 2012 Karl D. Gordon All Rights Reserved ...

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