Temat: system potential - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Some new models of anisotropic compact stars with quadratic equation of state
Autorzy:: Malaver, Manuel
Powiązania:: https://bibliotekanauki.pl/articles/1163554.pdf
Data publikacji:: 2018
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: Adjustable parameter
Einstein-Maxwell system
Electromagnetic field
Exact solutions
Gravitational potential
Relativistic objects
Opis:: In this paper, we studied the behavior of relativistic objects with anisotropic charged matter distribution considering a prescribed form for the gravitational potential Z(x) which depends on an adjustable parameter n. The equation of state presents a quadratic relation between the energy density and the radial pressure. New exact solutions of the Einstein-Maxwell system are generated. A physical analysis of electromagnetic field indicates that is regular in the origin and well behaved. We show as a variation of the adjustable parameter n causes a modification in the charge density, the radial pressure and the mass of the stellar object.
Źródło:: World Scientific News; 2018, 109; 180-194
2392-2192
Pojawia się w:: World Scientific News
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Analytical models for quark stars with electric field
Autorzy:: Malaver, Manuel
Powiązania:: https://bibliotekanauki.pl/articles/1178867.pdf
Data publikacji:: 2017
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: Einstein-Maxwell system
MIT Bag Model
adjustable parameter
charged quark matter
energy density
gravitational potential
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 prescribed form of gravitational potential Z(x) used by Malaver (2016), which depends on an adjustable parameter n. Variables as the energy density, charge density, pressure and the metric functions are written in terms of elementary and polynomial functions. We show that the form chosen for the gravitational potential allows obtain physically acceptable solutions with any value of the adjustable parameter.
Źródło:: World Scientific News; 2017, 89; 39-47
2392-2192
Pojawia się w:: World Scientific News
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: On the fictional and real lost gravitation force
Autorzy:: Pluta, Z.
Hryniewicz, T.
Powiązania:: https://bibliotekanauki.pl/articles/411829.pdf
Data publikacji:: 2012
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: fikcyjna siła grawitacji
reguła d'Alemberta
prawdziwa grawitacja
siła grawitacji
potencjał pola (SSPF)
niestabilny statyczny potencjał pola (ASPF)
czasoprzestrzeń
fictional gravitation force
d'Alembert's rule
real gravitation force/gravitation force
stable static potential field (SSPF)
unstable static potential field (ASPF)
interstate space
space-time
rigid system
mass-flexible system
Opis:: The paper covers a critical approach to the natural reality study which is the method of scientific cognition. The existent so called d`Alembert's rule is the link of reality on which the specific attention is focused. The critics is directed to the fictional inertia force covered in the mentioned rule. The necessity for its elimination from the reality description has been presented. Instead, it is proved that a real inertia force occurs. A proper exemplification material has been delivered with two examples of force equilibrium of the system. One of them refers to a rigid system being both under stable and unstable states. The second one covers also these two states but it is referred to a mass-flexible system. Finally, the discussed solution of the problem has been explained on the example of mathematic pendulum and a mass-string system.
Źródło:: International Letters of Chemistry, Physics and Astronomy; 2012, 4; 8-16
2299-3843
Pojawia się w:: International Letters of Chemistry, Physics and Astronomy
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Adequate Theory of Vertical Motion of a Mass-Elastic System
Autorzy:: Pluta, Z.
Hryniewicz, T.
Powiązania:: https://bibliotekanauki.pl/articles/412071.pdf
Data publikacji:: 2013
Wydawca:: Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:: Theory of oscillation motion
Vertical mass-elastic system
Free harmonic oscillator motion
potential field
force characteristics
Source equation of path/way length
time constant
Opis:: The paper covers an adequate theory on vertical motion of the mass-elastic system. This system is an oscillator with the motion being a free harmonic motion. The first extended link of the consideration presents a critical analysis of the existent knowledge referred to this subject. Then the energetic states of the oscillator have been determined. Next the force characteristics of the free harmonic motion of the oscillator are presented. A general source equation of the path/way length and the resulting detailed forms, signalizing extensive possibilities to build up the characteristics, have been presented. Finally the connections between the characteristics of real and simulative motions were derived. It should be added that this first mentioned motion is the subject of adequate description presented here. The simulated motion is referred to the existent classical theory which has been subjected under a critical consideration.
Źródło:: International Letters of Chemistry, Physics and Astronomy; 2013, 6; 116-136
2299-3843
Pojawia się w:: International Letters of Chemistry, Physics and Astronomy
Dostawca treści:: Biblioteka Nauki

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