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DETERMINE THE EFFECTIVE PARAMETERS IN GRAVITATIONAL LENSES AND STUDY THE ALTERNATIVE EFFECTS BETWEEN THEM | ||
| Journal of University of Anbar for Pure Science | ||
| Article 43, Volume 3, Issue 3, 2009, Pages 184-190 PDF (599.79 K) | ||
| Document Type: Research Paper | ||
| DOI: 10.37652/juaps.2009.15552 | ||
| Authors | ||
| S. A.AL-SABAAWE; M. A.AL-OBAYDE | ||
| University of Mosul - College of Science | ||
| Abstract | ||
| The importance of the gravitational lens in cosmology and astronomy, and a brief historical review for the evolution of the gravitational lenses have been introduced. The effective parameters are determined by using the geometrical model of the Point mass gravitational lens. A study of the effective strength of the geometrical distances ,the source and the lens distances , the distance between the lens and the source ,and the impact parameter in the distance from the source to the image. By using the variation of the image distance with respect to the geometrical distance . We concluded that the strengths effect of these parameters approaching zero at very large distances, except that of the distance between the lens and the source which seems to be constant. This kind of behavior has been explained . | ||
| References | ||
|
1.Wambsganss,J.,(2001),"Gravitational Lensing in Astronomy" ,Max-Planck -Gesells chaft .ISSN,Germany,1433-8351
2.Narayaan,R.,Bartelman M.(1997), "Lectures on Gravitational Lensing", in: Formation of Structure in the Universe; edited by A. Dekel and J.P. Ostriker; Cambridge University Press .Also ,arXiv.org/ps/astro-ph/9606001v2
3.Futamase, T., Hattori, M.,and Hamana, T .,(1998), "Gravitationally Lensed Yet Morphologically Regular Images In Cllusters of Galaxies as astronomical Tools",APJ,508,L47-L49.
4.Courbin, F.,(2003),"Qasar Lensing :the Observer,s Point of View", Gravitational Lensimg: a unique tool for cosmology, ASP Conference Series,Vol.xxx, ),
5.Williams,L.L.R.,Schechter,P.L.,(1997),"The quest for the golden lens: Measurement of the Hubble Constant Via Gravitational Lensing— A Review of the Jodrell Bank “GoldenLenses”Workshop" ,astroph/9709059v1
6.Kundic,T.,Cohen,J.G., Blandford ,R.D. and Lubin,L .M.,(1997)," Keck Spectrosc opy of the Gravitational Lens System PG 1115+080: Redshifts of Lensing Galaxies",AJ.114:2.507510,
7.Surdej ,J .,and Claeskens, J. f.,(2001),"the century of Space Science", Kluwer Academic Publishers. Netherlands.
8.Schneider, P., (2003),"gravitational Lensing as a Probe of structure",arXiv: astrophys /0306465v1.
9.Trott C. and Webster R., (2003),"Determining the properties of galaxy 2237+0305 using Gravitational Lensing" International Astronomical Union Symposium no. 220, held 21 - 25 July 2003 in Sydney, Australia. Eds: S. D. Ryder, D. J. Pisano, M. A. Walker, and K. C. Freeman. San Francisco: Astronomical Society of the Pacific., p.109.Also arXiv:astro-ph/0310530v1
10. Bartelmann, M., and Schneider, P.,( 2000 )," Weak Gravitational Lensing", Physics Reports, Volume 340, Issue 4-5, p. 291-472.
11. aerbeke. L.V.,and Mellirr , Y., (1996),"Weak Lensing as aProbe of Dark Matter ",arXiv:astro-ph/9606100v1. Proceedings of the XXXIst RENCONTRES DE MORIOND Series: Moriond Workshops Les Arcs, Savoie, France January 27-2, 1996 Dark matter in cosmology quantum measurment, Experimental gravitation.
12. Einstein A., (1916). "The Foundation of the General Theory of Relativity". Annalen der Physik,49,160-164
13. Eddington, A. , (1920), "Space, Time and Gravitation", Book.Cited by[ Mc Clelland, 2008]
14. Lodge, O., (1919),"Gravitation and Light", Nature. 104, 354.
15. Chwolson, O., (1924), "Uber eine mogliche form fiktiver Doppelsterne", APJ, 57, 238. Cited by[ McClelland,2008]
16. Einstein, A., (1936)," Lens-Like Action of a Star by the Deviation of Light in the Gravitational Field", Science, 84, 2188, 506-507.
17. Tikhov , (1938), "Sur la déviation des rayons lumineux dans le champ de gravitation des é toiles" , Izvestiia Glavnoi astronomicheskoi observatorii v Pulkove. Cited by[ McClelland,2008]
18. Zwicky, (1937), "On the Probability of Detecting Nebulae Which Act as Gravitational Lenses", Physical Review, 51,8, 679-679.
19. Zwicky , (1937), "Nebulae as Gravitational Lenses" ,Physical Review, 51,4, 290-290.
20. Barnothy, J. , (1965), "Quasars and the Gravitational Image Intensifier", Astronomical Journal ,70, 666.
21. McClelland T.,(2008)," A REVIEW OF THE HISTORY, THEORY AND OBSERVATIONS OF GRAVITATIONAL MICROLENSING UPUNTIL THE PRESENT DAY", Thesis for the Degree of Master, University of Canterbury
22. Liebes ,(1969), "Gravitational Lens Simulator", American Journal of Physics, 37,1,103.
23. Refsdal, S., (1964), "On the Possibility of determining Hubble's parameter and the masses of galaxies from the gravitational lens effect.", MNRAS.128,307
24. Refsdl , S.,(1966),"On the Possibility of Testing Cosmological .Theories From The Gravitational Lens Effect",MNRAS,132,101-111.
25. Wlash, D., Carswell, R., and Weymann, R., (1979), "0957 + 561 A, B - Twin quasistellar objects or gravitational lens", Nature, 279, 81-384.
26. Weymann, R. J., Latham, D., Roger, J., et al. 1980, Nature, 285, 641.
27. Schneider, P., (1995)," Cosmological Applications of Gravitational Lensing", Astrophysics 1995. Astron. Astrophys. 302:639-48. Also (astro-ph), astro-ph/9512047.
28. Refsdl, S. and Surdej , J.,(1994),"Gravtaional Lenses",Rep.Prog.Pys.,56,117-185. | ||
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