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Book
Naines blanches : comptes rendus du Colloque International d'Astrophysique tenu au Collège de France du 17 au 23 Juillet 1939 sous la Présidence du Professeur Henry Norris Russell
Authors: --- ---
Year: 1941 Publisher: Paris : Hermann,

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Keywords

WHITE DWARFS --- WHITE DWARFS


Dissertation
Convection in pulsating white dwarfs
Authors: --- --- --- --- --- et al.
Year: 2019 Publisher: Liège Université de Liège (ULiège)

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In this work, the emphasis will be placed on the understating of the theory needed to try
to describe correctly the interaction between convection and pulsation. We will shed light on
important terms appearing due to turbulent flows and see how we can describe them. Hence,
we will present more evolved models that should reproduce the reality with a better fidelity.
Finally, to illustrate and compare the different possible models introduced previously, we will
study a well-known type of variable stars: the ZZ Ceti white dwarfs. These dying stars are
known for their extremely thin but efficient convection envelope (as most white dwarfs) and
for their instability strip for which better predictions are still needed in order to match the
observations. Dans ce travail, l'emphase sera mise sur la compréhension de la théorie nécessaire pour décrire correctement l’interaction entre la convection et les pulsations. Nous mettrons en évidence l'apparition de termes importants supplémentaires provenant des écoulements turbulents et nous verrons comment ils peuvent être décrits. De plus, nous présenterons des modèles plus évolués censés reproduire la réalité avec une meilleure fidélité. Finalement, pour illustrer et comparer les différents modèles que nous auront préalablement introduits, nous étudierons un type d'étoiles variables bien connu : les naines blanches ZZ Ceti. Ces étoiles en fin de vie sont connues pour leur enveloppe convective fine mais très importante et surtout pour leur bande d'instabilité pour laquelle de meilleures prédictions sont toujours nécessaires afin de reproduire les observations.

Physics of dense matter : symposium n°53 held in Boulder, Colorado, U.S.A., 21-25 August, 1972
Authors: ---
ISBN: 9027704066 9027704074 Year: 1974 Publisher: Dordrecht ; Boston, MA : D. Reidel,


Book
Stark Broadening of Spectral Lines in Plasmas
Author:
ISBN: 3038974560 3038974552 Year: 2019 Publisher: MDPI - Multidisciplinary Digital Publishing Institute

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Experimental and theoretical studies of Stark broadening of spectral lines in plasmas are the cornerstone of a large number of spectroscopic diagnostics of laboratory and astrophysical plasmas. As such, they are very important both fundamentally and practically, the latter being due to the numerous practical applications of plasmas. Examples are studies dealing with: controlled thermonuclear fusion (that would provide a virtually unlimited source of energy), plasma-based lasers for medical and other purposes, technological microwave discharges (especially those used for manufacturing microchips), a better understanding of solar activity, other astrophysical objects (white dwarfs, flare stars, and so on). The book reviews advances in this area achieved in recent years and presents new original papers building on these advances.

White Dwarfs: Cosmological and Galactic Probes
Authors: --- ---
ISBN: 1280337508 9786610337507 1402037252 1402036930 9048169321 Year: 2005 Publisher: Dordrecht : Springer Netherlands : Imprint: Springer,

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The emphasis on white dwarf stars and cosmology arises from the most recent advances in cosmological and galactic structure research in which white dwarf stars are playing a very prominent role. Examples are Type Ia supernovae (i.e. white dwarf supernovae), the origin and evolution of the universe, the age of the galactic disk, cosmochronology using white dwarfs in globular clusters and galactic clusters, and the physics of accretion onto compact (very dense) stars. As an assisting guide to the reader, we have included, by invitation, comprehensive review articles in each of the four major areas of the book, white dwarf supernovae, cosmology, accretion physics and galactic structure. The reviews include introductory material that they build upon. The book is suitable and most useful to advanced undergraduates, graduate students and scientific professionals (e.g. astronomers, astrophysicists, cosmologists, physicists).


Book
Suzaku Studies of White Dwarf Stars and the Galactic X-ray Background Emission
Author:
ISBN: 4431542183 4431547177 4431542191 1299198015 Year: 2013 Publisher: Tokyo : Springer Japan : Imprint: Springer,

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This thesis presents a study of the origin of an apparently extended X-ray emission associated with the Galactic ridge. The study was carried out with broadband spectra obtained from mapping observations in the Galactic bulge region conducted in 2005–2010 by the Suzaku space X-ray observatory. The spectra were analyzed with a newly constructed X-ray spectral model of an accreting white dwarf binary that is one of the proposed candidate stars for the origin of the Galactic ridge emission in the higher energy band. Fitting of the observed Galactic ridge spectra with the model showed that there is another spectral component that fills the gap between the observed X-ray flux and the component expected from the accreting white dwarf spectral model in the lower energy band. This additional soft spectral component was nicely explained by an X-ray spectral model of normal stars. The result, together with previously reported high-resolution imaging results, strongly supports the idea that the Galactic ridge X-ray emission is an assembly of dim, discrete X-ray point sources.

Special and General Relativity : With Applications to White Dwarfs, Neutron Stars and Black Holes
Author:
ISBN: 9780387471099 0387471065 9780387471068 038747109X 1441923667 Year: 2007 Publisher: New York, NY : Springer New York : Imprint: Springer,

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Special and General Relativity are concisely developed together with essential aspects of nuclear and particle physics. Problem sets are provided for many chapters, making the book ideal for a course on the physics of white dwarf and neutron star interiors.

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