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  • 1
    Online Resource
    Online Resource
    Berlin, Heidelberg :Springer Berlin / Heidelberg,
    Keywords: Space sciences. ; Electronic books.
    Description / Table of Contents: This is an outstanding book, revised and updated, on star formation and evolution. Not only does the author present the current state of knowledge on stellar physics, but he handles with equal care the many problems that this field of research still faces.
    Type of Medium: Online Resource
    Pages: 1 online resource (506 pages)
    Edition: 2nd ed.
    ISBN: 9783642147340
    Series Statement: Astronomy and Astrophysics Library
    DDC: 523.88
    Language: English
    Note: Stellar Physics -- Preface to the Second English Edition -- Preface to the First English Edition -- Preface to the Russian Edition -- Contents of Volume 1 -- Contents of Volume 2 -- 7 Star Formation -- 7.1 Observations of the Regions of Star Formation -- 7.1.1 Introduction -- 7.1.2 Observational Data -- 7.2 Spherically Symmetric Collapseof Interstellar Clouds -- 7.2.1 Heat Balance of an Optically Thin Cloud -- 7.2.2 Equations for Cloud Collapse -- 7.2.3 Calculational Results -- 7.3 Collapse of Rotating Clouds -- 7.3.1 Set of Equations and Difference Scheme Properties -- 7.3.2 Calculational Results -- 8 Pre-Main Sequence Evolution -- 8.1 Hayashi Phase -- 8.1.1 Nuclear Reactions -- 8.1.2 Non-Ideality of Matter -- 8.1.3 Evolution of Low-Mass Stars, Minimum Mass of a Star on the Main Sequence, Role of Various Factors -- 8.1.4 Evolutionary Role of the Mass Loss -- 8.2 Evolution of Rapidly Rotating Stars on Gravitational Contraction Stages -- 8.2.1 On the Distribution of Angular Velocity of Rotation -- 8.2.2 Method for Evolutionary Calculations -- 8.2.3 Calculation Results -- 8.3 Models for the Matter Outflow from Young Stars -- 8.3.1 Outflowing Bipolytropic Models -- 8.3.2 Outflowing Models for Isentropic Hydrogen Stars -- 8.3.3 Models for Outflowing Coronae of Young Stars -- 8.3.4 On the Phenomenon of Fuor -- 9 Nuclear Evolution of Stars -- 9.1 Sources of Uncertainty in Evolutionary Calculations -- 9.1.1 Convection -- 9.1.2 Semiconvection -- 9.1.3 Convective Non-Locality and Overshooting -- 9.1.4 Opacity and Nuclear Reactions -- 9.1.5 Methods for Calculating Envelope -- 9.1.6 Other Factors -- 9.2 Evolution of Stars in Quiescent Burning Phases -- 9.2.1 Iben's Calculations -- 9.2.2 Paczynski's Calculations -- 9.2.3 Evolution of Massive Stars -- 9.2.4 Evolution of Massive Stars with Mass Loss -- 9.2.5 CAK Theory. , 9.2.6 Line-Driven Winds in the Presence of Strong Gravitational Fields -- 9.2.7 Calculations with New Opacity Tables -- 9.3 Evolution with Degeneracy, Thermal Flashes -- 9.3.1 Core Helium Flash -- 9.3.2 Horizontal Branch -- 9.3.3 Asymptotic Giant Branch -- 9.3.4 Thermal Flashes in Helium-Burning Shell -- 9.3.5 The Mass Loss in AGB Stars -- 9.3.6 Evolution with Mass Loss: From AGB to White Dwarf State -- 9.3.7 On Mixing on the AGB and in Neighbourhoods -- 9.3.8 Thermal Instability in Degenerate Carbon Core -- 9.3.9 Convective ²URCA Shells² -- 9.3.9.1 Energy Equation in Presence of the Convective URCA Shell -- 9.3.9.2 Convective Flux -- 10 Collapse and Supernovae -- 10.1 Presupernova Models -- 10.1.1 Stellar Cores at Threshold of Hydrodynamical Stability: Energetic Method -- 10.1.2 Stellar Cores at Thermal Instability Threshold -- 10.2 Explosions Resulting from the Thermal Instability Development in Degenerate Carbon Cores -- 10.2.1 Basic Equations -- 10.2.2 Detonation -- 10.2.3 Deflagration -- 10.2.4 Spontaneous Burning and Detonation -- 10.2.5 Instabilities of Nuclear Flames -- 10.3 Collapse of Low-Mass Stellar Cores -- 10.4 Hydrodynamical Collapse of Stellar Cores -- 10.4.1 Low-Energy Window for Neutrinos -- 10.4.2 Asymmetric Neutrino Emission During Collapse of a Star with a Strong Magnetic Field -- 10.4.3 Neutrino Oscillations in Matter -- 10.4.4 Convective Instability in Collapsing Stellar Cores -- 10.4.5 Two-Dimensional and Three-Dimensional Calculations of Neutrino Convection -- 10.4.6 Explosion of Rapidly Rotating Star -- 10.4.7 Standing Accretion Induced Instability -- 10.4.8 Acoustic Explosion Model -- 10.5 Magnetorotational Model of Supernova Explosion -- 10.5.1 Mechanism of Magnetorotational Explosion -- 10.5.2 Basic Equations -- 10.5.3 Cylindrical Approximation -- 10.5.4 Calculational Results. , 10.5.5 Two-Dimensional Numerical Method in MHD -- 10.5.6 Magnetorotational Explosion of the Initially Uniform Cloud -- 10.5.7 Magnetorotational Supernova: Quadruple and Dipole Magnetic Configurations -- 10.5.8 Development of the Magnetorotational Instability in 2D Simulations -- 10.5.9 Symmetry Breaking Of the Magnetic Field, Anisotropic Neutrino Emission and High Velocity Neutron Star Formation -- 10.5.10 A Kick Due to Hydrodynamic Instabilities -- 11 Final Stages of Stellar Evolution -- 11.1 White Dwarfs -- 11.1.1 Case T=0 -- 11.1.2 Account for a Finite Value of T and Cooling -- 11.1.3 Cooling of White Dwarfs Near the Stability Limit with the Inclusion of Heating by Non-Equilibrium -Processes [34] -- 11.1.4 On the Evolution of Magnetic Fields in White Dwarfs -- 11.1.5 Nova Outbursts -- 11.2 Neutron Stars -- 11.2.1 Cold Neutron Stars -- 11.2.2 Hot Neutron Stars -- 11.2.3 Cooling of Neutron Stars -- 11.2.4 Magnetic Field Decay in Neutron Stars -- 11.2.5 Stars with Neutron Cores -- 11.2.6 Quark stars -- 11.2.6.1 Strange Quark Matter -- 11.2.6.2 Strange Stars -- 11.2.6.3 The Surface: Bare or Crusted Strange Stars? -- 11.3 Black Holes and Accretion -- 11.3.1 Spherically Symmetric Accretion -- 11.3.2 Accretion at an Ordered Magnetic Field -- 11.3.3 Conical Accretion on to a Rapidly Moving Black Hole -- 11.3.4 Disk Accretion in Binaries -- 11.3.5 Accretion Disc Structure with Optically Thin/Thick Transition -- 11.3.6 Black Hole Advective Accretion Disks with Optical Depth Transition -- 11.3.6.1 Basic Equations -- 11.3.6.2 Singular Points and Uniqueness of Solutions -- 11.3.6.3 Method of Solution -- 11.3.6.4 Numerical Results and Physical Effects -- 11.3.7 Large-Scale Magnetic Fields Dragging in Accretion Disks -- 11.3.7.1 Turbulent Disk with Radiative Outer Zones -- 11.3.8 Battery Effect in Accretion Disks. , 11.3.8.1 Radiatively Induced Current and Toroidal Magnetic Field Production in Accretion Disks -- 11.3.8.2 Production of a Poloidal Magnetic Field in Optically Thin Accretion Flows by Poynting--Robertson Effect -- 11.3.9 Screening of the Magnetic Field of Disk Accreting Stars -- 11.3.10 Jet Confinement by Magneto-Torsional Oscillations -- 11.3.10.1 Profiling in Axially Symmetric MHD Equations -- 11.3.10.2 Further Simplification: Reducing the Problem to an Ordinary Differential Equation -- 11.3.10.3 Numerical Solution -- 11.3.10.4 Restrictions of the Model -- 11.4 Cosmic Gamma Ray Bursts: Observations and Modeling -- 11.4.1 Central Engine of Cosmic Gamma-Ray Bursts -- 11.4.2 Optical Afterglows -- 11.4.3 Short GRB and Giant SGR Bursts -- 11.4.4 High Energy Afterglows (30--10,000MeV) -- 12 Dynamic Stability -- 12.1 Hierarchy of Time Scales -- 12.2 Variational Principle and Small Perturbations -- 12.2.1 Variational Principle in General Relativity -- 12.2.2 Newtonian and Post-Newtonian Limits -- 12.2.3 Method of Small Perturbations in Newtonian Theory -- 12.3 Static Criteria for Stability -- 12.3.1 Non-Rotating Stars -- 12.3.2 Criteria for Rotating Stars -- 12.3.3 Removal of Degeneracy of Neutral Oscillatory Modes in Rotating Isentropic Stars -- 12.3.4 Numerical Examples -- 12.4 Star Stability in the Presence of a Phase Transition -- 12.4.1 Evaluation of Variations and 2 -- 12.4.2 Other Forms of Stability Criterion -- 12.4.3 Rough Test for Stability -- 12.4.4 Derivation of Stability Condition for a Phase Transition in the Center of Star -- 12.5 Dynamic Stabilization of NonSpherical Bodies Against Unlimited Collapse -- 12.5.1 Equations of Motion -- 12.5.2 Dimensionless Equations -- 12.5.3 Numerical Results for the Case H=0 -- 12.5.4 Poincaré Section -- 12.5.4.1 The Bounding Curve -- 12.6 General Picture -- 13 Thermal Stability. , 13.1 Evolutionary Phases Exhibiting Thermal Instabilities -- 13.1.1 Instability in Degenerate Regions -- 13.1.2 Instabilities in the Absence of Degeneracy -- 13.2 Thermal Instability Development in Non-Degenerate Shells -- 13.2.1 Stability of a Burning Shell with Constant Thickness -- 13.2.2 Calculations of Density Perturbations -- 13.2.3 A Strict Criterion for Thermal Stability -- 14 Stellar Pulsations and Stability -- 14.1 Eigenmodes -- 14.1.1 Equations for Small Oscillations -- 14.1.2 Boundary Conditions -- 14.1.3 p-, g- and f-Modes -- 14.1.4 Pulsational Instability -- 14.2 Pulsations in Stars with Phase Transition -- 14.2.1 Equations of Motion in the Presence of a Phase Transition -- 14.2.2 Physical Processes at the Phase Jump -- 14.2.3 Adiabatic Oscillations of Finite Amplitude -- 14.2.4 Decaying Finite-Amplitude Oscillations -- 14.3 Pulsational Stability of Massive Stars -- 14.3.1 The Linear Analysis -- 14.3.2 Non-Linear Oscillations -- 14.4 On Variable Stars and Stellar Seismology -- References -- List of Symbols and Abbreviations -- Some Important Constants -- Subject Index.
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  • 2
    Online Resource
    Online Resource
    Berlin, Heidelberg :Springer Berlin / Heidelberg,
    Keywords: Stars--Evolution. ; Electronic books.
    Type of Medium: Online Resource
    Pages: 1 online resource (393 pages)
    Edition: 1st ed.
    ISBN: 9783662226391
    Series Statement: Astronomy and Astrophysics Library
    DDC: 523.88
    Language: English
    Note: Stellar Physics 2: Stellar Evolution and Stability -- ASTRONOMY AND ASTROPHYSICS LIBRARY -- Copyright -- Preface to the English Edition -- Preface to the Russian Edition -- Contents -- Contents of Volume 1 -- 7. Star Formation -- 8. Pre-main Sequence Evolution -- 9. Nuclear Evolution of Stars -- 10. Collapse and Supernovae -- 11. Final Stages of Stellar Evolution -- 12. Dynamic Stability -- 13. Thermal Stability -- 14. Stellar Pulsations and Stability -- References -- List of Symbols and Abbreviations -- Some Important Constants -- Subject Index.
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  • 3
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    In:  EPIC32nd European Conference on Permafrost EUCOP II, Potsdam, Germany, June 12-16, 2005 p.
    Publication Date: 2019-07-17
    Description: The paper for the first time focuses on the fundamental geocryological goal - direct determining of permafrost agewith implications in many fields of geo- and bioscience. In general, the duration of the permafrost existence does notcoincide with the age of the sediments. Therefore, a cross-section of the cryolithosphere (except the syngeneticallyfrozen layers, that were frozen upon deposition and never had thawed) represents a sequence with known age of thesediments and with permafrost age, which is unknown or different to the sediment ages.Theoretically, the problem could be solved using the approach of nuclear physics. We present a method of permafrostdating with the cosmogenic radionuclides 36Cl and 10Be in ice as a natural chronometer. The principal advantage ofthe proposed dating method for permafrost studies is based on the determination of the time of 36Cl and 10Be fixationthat corresponds to the age of the ice. As the first application, ice wedges are dated. As signals, the 36Cl and 10Beratios are used. 36Cl and 10Be are produced in the atmosphere by nuclear and spallation reactions of cosmic rays withargon and nitrogen or oxygen, respectively. Stable chlorine enters the atmosphere from the oceans and is containedin the precipitations. The ratio does not depend on chloride concentrations in precipitations and on sublimation ofsnow. In-situ production of 36Cl in ice via neutron capture reactions on chlorine and of 10Be via cosmic ray inducedreactions on oxygen are calculated.Preliminary analysis of the results supports feasibility of the permafrost dating. 36Cl/Cl ratios in late and middle PleistoceneIcy Complexes samples from the cape Svjatoy Nos on the Laptev Sea coast (72° N, 140° E) were measured byaccelerator mass spectrometry. The time difference between the formations of these Complexes was estimated as 0.4million years. This time difference compares reasonably well with a time difference estimated by traditional geologicalmethods. Dating limit based on the presented method corresponds to an age limit of 3 million years. This intervalcovers all possible Arctic permafrost horizons and the significant (from late Pliocene) part of Antarctic permafrost. Asa next approach step, 36Cl and 10Be in ice-cement and segregated ice will be dated. To develop the cosmogenic datingof permafrost age, it is necessary to correlate these data with the geological and permafrost history.
    Repository Name: EPIC Alfred Wegener Institut
    Type: Conference , notRev
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  • 4
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
    Format: application/pdf
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  • 5
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , peerRev
    Format: application/pdf
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  • 6
    facet.materialart.
    Unknown
    In:  EPIC3Vol. 12, EGU2010-2021-1, 2010, EGU General Assembly , Vienna, 2010 p.
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
    Type: Conference , notRev
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  • 7
    Publication Date: 2019-07-17
    Repository Name: EPIC Alfred Wegener Institut
    Type: Article , isiRev
    Format: application/pdf
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  • 8
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The results of a search for narrow resonances ine + e − annihilation at centre-of-mass energies between 7.23 and 10.34 GeV are presented. The experiment was performed using the MD-1 detector at the VEPP-4 storage ring. The total luminosity integral of 16 pb−1 was taken. There is no evidence that new states exist. The upper limits on the leptonic widthΓ ee of possible resonances are less, by a factor of 10–80, than theΓ ee for the ϒ(1S) meson.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The total cross section for γγ→hadrons was measured as a function of the invariant massW of the system (1.25 to 4.25 GeV) at thee + e −-collider VEPP-4 with the detector MD-1. For the first time the data were obtained by detecting both scattered leptons with almost zero emission angles. The mean squared four momentum transfer 〈q 2〉 is −0.005 GeV2, the rmsW resolution is 100–250 MeV. The data on the mean charged multiplicity 〈n C 〉 are well described by the function 〈n C 〉=(1.62 ±0.37)+(1.83±0.45)·ln(W(GeV)). TheW dependence of the total cross section is consistent with the theoretical prediction σ(nb)=240+270/W(GeV).
    Type of Medium: Electronic Resource
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  • 10
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The solar activity, expressed as the sunspot number, has been recorded consistently since 1843, when Schwabe discovered the 11 -yr cycle. Earlier data can be reconstructed from historical documents3"5 containing references to auroral events as well as mentioning sunspot activity. Although much ...
    Type of Medium: Electronic Resource
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