Perfil de materia oscura de grupos y cúmulos de galaxias: una aplicación del efecto lente gravitacional galaxia-galaxia
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Universidad Industrial de Santander
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La cosmología se encuentra en una de sus más importantes épocas de desarrollo; los avances teóricos y, más aún, el crecimiento de pruebas cosmológicas de alta precisión (satélites como WMAP y Planck) han impulsado y seguirán impulsando en la cosmología un período de avance sin precedentes en la historia de la física. El paradigma actual del llamado (ΛCDM) es soportado hasta la fecha, no sin problemas, por la teoría general de la relatividad. Sin embargo, dos componentes exóticas son dominantes del modelo cosmológico actual: la materia y la energía oscuras. Nosotros presentamos una de las pruebas más directas y con menos restricciones al estudio de parámetros fundamentales cosmológicos (Ωm, Ωλ, σ8) y estudiamos el uso de la esquila cosmológica en el estudio de la función de correlación de dos puntos. Se discute brevemente el problema del sesgo entre materia luminosa y materia oscura.
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.
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.
Keywords
lentes gravitacionales, dark matter profiles, cosmology, power-spectrum, lentes gravitacionales, materia oscura, cosmología, espectro de potencias