Linear Isentropic Oscillations of Stars

Linear Isentropic Oscillations of Stars PDF Author: Paul Smeyers
Publisher: Springer Science & Business Media
ISBN: 3642130305
Category : Science
Languages : en
Pages : 475

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Book Description
This book surveys the theory of free, linear, isentropic oscillations in spherically symmetric, gaseous equilibrium stars, from basic concepts to asymptotic representations of normal modes and with slow period changes in rapidly evolving pulsating stars.

Linear Isentropic Oscillations of Stars

Linear Isentropic Oscillations of Stars PDF Author: Paul Smeyers
Publisher: Springer Science & Business Media
ISBN: 3642130305
Category : Science
Languages : en
Pages : 475

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Book Description
This book surveys the theory of free, linear, isentropic oscillations in spherically symmetric, gaseous equilibrium stars, from basic concepts to asymptotic representations of normal modes and with slow period changes in rapidly evolving pulsating stars.

Saturation of the f-mode Instability in Neutron Stars

Saturation of the f-mode Instability in Neutron Stars PDF Author: Pantelis Pnigouras
Publisher: Springer
ISBN: 3319982583
Category : Science
Languages : en
Pages : 235

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Book Description
This book presents a study of the saturation of unstable f-modes (fundamental modes) due to low-order nonlinear mode coupling. Since their theoretical prediction in 1934, neutron stars have remained among the most challenging objects in the Universe. Gravitational waves emitted by unstable neutron star oscillations can be used to obtain information about their inner structure, that is, the equation of state of dense nuclear matter. After its initial growth phase, the instability is expected to saturate due to nonlinear effects. The saturation amplitude of the unstable mode determines the detectability of the generated gravitational-wave signal, but also affects the evolution of the neutron star. The study shows that the unstable (parent) mode resonantly couples to pairs of stable (daughter) modes, which drain the parent’s energy and make it saturate via a mechanism called parametric resonance instability. Further, it calculates the saturation amplitude of the most unstable f-mode multipoles throughout their so-called instability windows.

Literature 1984, Part 2

Literature 1984, Part 2 PDF Author: S. Böhme
Publisher: Springer Science & Business Media
ISBN: 3662123460
Category : Science
Languages : en
Pages : 928

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Book Description


Literature 1986, Part 1

Literature 1986, Part 1 PDF Author: Prof. Dr. Roland Wielen
Publisher: Springer Science & Business Media
ISBN: 366212355X
Category : Science
Languages : en
Pages : 1122

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Book Description


Pulsating Stars

Pulsating Stars PDF Author: Márcio Catelan
Publisher: John Wiley & Sons
ISBN: 3527655204
Category : Science
Languages : en
Pages : 500

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Book Description
This book surveys our understanding of stars which change in brightness because they pulsate. Pulsating variable stars are keys to distance scales inside and beyond the Milky Way galaxy. They test our understanding not only of stellar pulsation theory but also of stellar structure and evolution theory. Moreover, pulsating stars are important probes of the formation and evolution of our own and neighboring galaxies. Our understanding of pulsating stars has greatly increased in recent years as large-scale surveys of pulsating stars in the Milky Way and other Local Group galaxies have provided a wealth of new observations and as space-based instruments have studied particular pulsating stars in unprecedented detail.

Baryonic Processes in the Large-Scale Structuring of the Universe

Baryonic Processes in the Large-Scale Structuring of the Universe PDF Author: Jean-Baptiste Durrive
Publisher: Springer
ISBN: 3319618814
Category : Science
Languages : en
Pages : 192

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Book Description
This thesis addresses two very different but equally important topics in the very broad fields of astrophysics and cosmology: (I) the generation of cosmological magnetic fields and (II) gravitational fragmentation of the Cosmic Web. All mathematical developments are completed by illuminating physical interpretations, and the thesis, which is guided by existing observations, is purely theoretical. In part I, the author further develops a magnetogenesis model proposed in the literature, providing an unprecedented level of physical understanding. He demonstrates that the physics of photoionisation is very likely to have premagnetised, at a relevant level, the entire Universe at the early epoch of the formation of the first luminous sources. In part II, the author adapts the tools of plasma spectral theory to the context of gravitational instability of the baryonic gas within the stratified structures of the Cosmic Web. He skillfully derives the wave equation governing the growth of perturbations and explores various equilibrium configurations, in planar and cylindrical geometries characteristic of cosmic walls and filaments, for isothermal and polytropic conditions, with or without an external gravitational background. Clearly structured and written in pedagogical style, this outstanding thesis puts the results into perspective and highlights the merits and limitations of the various approaches explored.

Literature 1997, Part 1

Literature 1997, Part 1 PDF Author: Astronomisches Rechen-InstitutARI
Publisher: Springer Science & Business Media
ISBN: 3642517587
Category : Science
Languages : en
Pages : 1746

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Book Description
Astronomy and Astrophysics Abstracts is devoted to the recording, summarizing and indexing of astronomical publications throughout the world. Two volumes are scheduled to appear per year. Volume 67 records 10,903 papers covering besides the classical fields of astronomy and astrophysics such matters as space flights related to astronomy, lunar and planetary probes and satellites, meteorites and interplanetary matter, X rays and cosmic rays, quasars and pulsars. The abstracts are classified under more than one hundred subject categories thus permitting quick surveying of the bulk of material published on the same topic within six months. For instance, this volume records 119 papers on minor planets, 155 papers on supernovae, and 554 papers on cosmology.

Asteroseismology in the Kepler Era

Asteroseismology in the Kepler Era PDF Author: Andrzej S. Baran
Publisher: Frontiers Media SA
ISBN: 2889714772
Category : Science
Languages : en
Pages : 178

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Book Description


Challenges of asteroseismology in the era of space missions

Challenges of asteroseismology in the era of space missions PDF Author: Javier Pascual Granado
Publisher: Frontiers Media SA
ISBN: 283251152X
Category : Science
Languages : en
Pages : 157

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Tidal Evolution and Oscillations in Binary Stars

Tidal Evolution and Oscillations in Binary Stars PDF Author: Antonio Claret
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 360

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Book Description