Temat: METRIC - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Generalized nonsingular model for compact stars electrically charged
Autorzy:: Malaver, Manuel
Powiązania:: https://bibliotekanauki.pl/articles/1157857.pdf
Data publikacji:: 2018
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: Adjustable parameter
Einstein-Maxwell system
MIT Bag Model
anisotropy
metric functions
Opis:: We found new class of solutions to the Einstein-Maxwell system of equations for charged quark matter within the framework of MIT Bag Model considering a particular form for the measure of anisotropy and a metric function which depends on an adjustable parameter α. Variables as the energy density, charge density, radial pressure and the metric functions are written in terms of elementary and polynomial functions. We show that the form chosen for the metric function allows obtain physically acceptable solutions with any value of the adjustable parameter.
Źródło:: World Scientific News; 2018, 92, 2; 327-339
2392-2192
Pojawia się w:: World Scientific News
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Charged stellar model with a prescribed form of metric function y(x) in a Tolman VII spacetime
Autorzy:: Malaver, Manuel
Powiązania:: https://bibliotekanauki.pl/articles/1163837.pdf
Data publikacji:: 2018
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: Compact relativistic objects
Electromagnetic field
Gravitational potential
Metric function
Tolman VII type potential
Opis:: In this paper, we study the behaviour of compact relativistic objects with charged anisotropic matter distribution considering Tolman VII type potential for the gravitational potential Z(x) and a particular form of the metric function y(x) proposed for Komathiraj and Maharaj (2007). The Einstein-Maxwell field equations are integrated analytical and we obtain the radial pressure, energy density, charge density, anisotropy and the mass function. A physical analysis of electromagnetic field indicates that is regular at the origin and well behaved. The new stellar model satisfies all physical properties in a realistic star.
Źródło:: World Scientific News; 2018, 108; 41-52
2392-2192
Pojawia się w:: World Scientific News
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Charged anisotropic models in a modified Tolman IV spacetime
Autorzy:: Malaver, Manuel
Powiązania:: https://bibliotekanauki.pl/articles/1177697.pdf
Data publikacji:: 2018
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: Adjustable parameter
Compact relativistic objects
Electromagnetic field
Gravitational potential
Metric function
Tolman IV type potential
Opis:: In this paper, we study the behaviour of compact relativistic objects with charged anisotropic matter distribution considering modified Tolman IV type potential for the gravitational potential Z(x) which depends on an adjustable parameter α and a particular form of the metric function y(x) used by Malaver (2009). The Einstein-Maxwell fields equations are integrated analytical and we obtain the radial pressure, energy density, charge density, anisotropy and the mass function. A physical analysis of electromagnetic field indicates that is regular at the origin and well behaved. The new stellar models satisfies all physical properties in a realistic star for any value of the adjustable parameter.
Źródło:: World Scientific News; 2018, 101; 31-43
2392-2192
Pojawia się w:: World Scientific News
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Analytical models for compact stars with a linear equation of state
Autorzy:: Malaver, Manuel
Powiązania:: https://bibliotekanauki.pl/articles/1191971.pdf
Data publikacji:: 2016
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: Einstein-Maxwell system
linear equation of state
charge density
MIT-Bag Model
metric function
exact solution
Opis:: In this paper, we found two new classes of solutions to the Einstein-Maxwell system of equations for compact stars assuming an anisotropic pressure and a linear equation of state for the matter distribution within the framework of MIT-Bag Model with a particular form of the metric function. The exact solutions can be written in terms of elementary function in presence of an electromagnetic field. All the obtained models have a singularity in the charge density but not admit singularities in the matter and metric functions at the centre.
Źródło:: World Scientific News; 2016, 50; 64-73
2392-2192
Pojawia się w:: World Scientific News
Dostawca treści:: Biblioteka Nauki

Artykuł

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