Revista Integración, temas de matemáticas.

Revista Integración, temas de matemáticas

Vol. 25 No. 1 (2007): Revista Integración, temas de matemáticas
Research and Innovation Articles

Perfil de materia oscura de grupos y cúmulos de galaxias: una aplicación del efecto lente gravitacional galaxia-galaxia

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  • L. Castañeda,
  • D. Caceres
L. Castañeda
Rheinische Friedrich-Wilhelms, Universität Bonn-Alemania, y Observatorio Astronómico Nacional,
Bio
D. Caceres
Observatorio Astronómico Nacional, Universidad Nacional de Colombia

Published 2007-04-30

Keywords

  • lentes gravitacionales,
  • dark matter profiles,
  • cosmology,
  • power-spectrum

How to Cite

Castañeda, L., & Caceres, D. (2007). Perfil de materia oscura de grupos y cúmulos de galaxias: una aplicación del efecto lente gravitacional galaxia-galaxia. Revista Integración, Temas De matemáticas, 25(1), 57–63. Retrieved from https://revistas.uis.edu.co/index.php/revistaintegracion/article/view/264

Abstract

Cosmology is in one of its most important periods of development. Theorical progress, and even more, growth in high-precision cosmological tests (satellites as WMAP and Planck) have given and will continue giving cosmology a period of unprecedented progress in the history of physics. The current paradigm of the so-called (ΛCDM) is supported so far, not without problems, by the general theory of relativity. However, two exotic components are dominant in current cosmological model: the dark matter and energy. We present one of the most direct and with fewer restrictions evidence on the study of fundamental cosmological parameters (Ωm, Ωλ, σ8 ) and analyze the use of shear in the cosmological study of the correlation function of two points. It is also briefly discussed the problem of bias among luminous matter and dark matter.

 

Keywords:lentes gravitacionales, dark matter profiles, cosmology, power-spectrum.

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References

[1] C.S. Kochanek, P. Schneider, J. Wambsganns, Gravitational Lensing, Strong, Weak and Micro. Introduction to Gravitational Lensing and Cosmology, Springer Verlag, 1 edition, (June 21, 2006).

[2] P. Schneider, J. Ehlers, E. Falco, Gravitational Lenses, Springer-Verlag: Heidelberg, 2nd printing, 1999 (SEF).

[3] P. Schneider, Weak Gravitational Lensing, astro-ph/0509252.

[4] T.G. Brainerd, R.D. Blandford, I. Smail, “Weak Gravitational Lensing by Galaxies”, Astrophysical Journal, 466, 623 (1996).