Nonplanar Geometry Dust – Ion Acoustic Shocks in an Adiabatic Dusty Plasma with Nonthermal Electrons
Louis E. Akpabio,
Akaninyene D. Antia
Issue:
Volume 3, Issue 4, August 2015
Pages:
55-59
Received:
24 February 2015
Accepted:
10 April 2015
Published:
25 June 2015
Abstract: An unmagnetized dusty plasma consisting of static negatively charged dust fluid, nonthermal distributed electrons, and adiabatic ion fluid has been considered. Basic properties of the dust-ion-acoustic shock waves have been made by the reductive perturbation method to derive the Burgers’ equation for nonplanar geometry. The solution of modified Burgers’ equation in nonplanar geometry is numerically analyzed and it has been found that, the nonplanar geometry effects have a very vital role in the development of shock waves. We also discovered that; the inclusion of the nonthermal electron distribution significantly modifies the shock wave profile. The change of the DIASW structure due to the effect of ion temperature and dust density is studied.
Abstract: An unmagnetized dusty plasma consisting of static negatively charged dust fluid, nonthermal distributed electrons, and adiabatic ion fluid has been considered. Basic properties of the dust-ion-acoustic shock waves have been made by the reductive perturbation method to derive the Burgers’ equation for nonplanar geometry. The solution of modified Bur...
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Evaluation of the Average Energy Density of the Electromagnetic Component of the Physical Vacuum and Quantum Nature of Gravity
Issue:
Volume 3, Issue 4, August 2015
Pages:
60-64
Received:
21 May 2015
Accepted:
11 June 2015
Published:
4 July 2015
Abstract: In the frame of the previously proposed model of the Universe dynamics (Timashev Serge. Planckian Energy-Mass Source and the Dynamics of the Universe: Phenomenology // International Journal of Astrophysics and Space Science, 2014, Vol. 2, No. 3, pp. 33-45), the substance of dark energy is associated with the electromagnetic component of the physical vacuum (EM vacuum). The estimate of this value obtained in this paper shows that the calculated zero-point oscillation energy does indeed constitute dark energy with the density established by the present time. At the same time, the energy density of the ЕМ-vacuum completely defines the dimensionless constant of gravitational interactions, demonstrating the quantum nature of gravity.
Abstract: In the frame of the previously proposed model of the Universe dynamics (Timashev Serge. Planckian Energy-Mass Source and the Dynamics of the Universe: Phenomenology // International Journal of Astrophysics and Space Science, 2014, Vol. 2, No. 3, pp. 33-45), the substance of dark energy is associated with the electromagnetic component of the physica...
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