Hostname: page-component-848d4c4894-75dct Total loading time: 0 Render date: 2024-06-08T19:56:31.490Z Has data issue: false hasContentIssue false

On the Present Time Approximate Values of the Characteristic Parameters of the Primordial Gravitational Waves

Published online by Cambridge University Press:  26 May 2016

M. Melek*
Affiliation:
Astronomy Department, Faculty of Science, Cairo University, Orman, Giza, Egypt; melek@frcu.eun.eg

Abstract

Core share and HTML view are not available for this content. However, as you have access to this content, a full PDF is available via the ‘Save PDF’ action button.

An approach is used to find out the present time approximate values of the characteristic amplitudes, the spectral densities, the intensties and the frequencies of the Primordial Gravitational Waves (PmGW), in the spatially perturbed Friedman - Robertson - Walker (FRW) adiabatically expanding Universe. The temporal variation of the magnitude of the time gradient of the characteristic amplitudes of the PmGW is calculated in spatial perturbed FRW Universe. The obtained results via this non-conventional approach may be of interest to shed some light on the possibilities of searching for the PmGW at definite frequency bands by the existing and the future networks of detectors.

Type
Part 10 Non-Photon Astrophysics and the Future
Copyright
Copyright © Astronomical Society of the Pacific 2003 

References

Allen, B. 1996, in “Les Houches School on Astrophysical Sources Of Gravitational Waves”, eds. Marck, J.A. and Lasota, J.P. (Cambridge University Press)Google Scholar
Astone, P., Ferrari, V., Maggiore, M., & Romano, J. D., 2000, Int. J. Mod. Phys. 9, 361 CrossRefGoogle Scholar
Astone, P., Lobo, J. A., & Schutz, B. F. 1994, CQG, 11, 2093 CrossRefGoogle Scholar
Ciufolini, I., Gorini, V., & Moschella, U. 2001, Gravitational Waves, (IoP Publishing Ltd., Bristol and Philadelphia), chapters 12 and 13 CrossRefGoogle Scholar
Kolb, E. W. & Turner, M. S. 1990, The Early Universe (Addison Wesley).Google Scholar
Lyth, D. H. & Riotto, A., 1999, Phys. Rep. 314, 1 CrossRefGoogle Scholar
Maggiore, M. 2000, Phys. Rep. 331, 284 CrossRefGoogle Scholar
Melek, M. 2000, Ap&SS, 272, 417 Google Scholar
Melek, M. 2002a, CQG, 19, 1343 CrossRefGoogle Scholar
Melek, M. 2002b, Ap&SS, 281, 4, 743 Google Scholar
Vecchio, A. 2002, CQG, 19, 1449 CrossRefGoogle Scholar