Statistics of QSO Lensing and Cosmological Parameters

نویسندگان
چکیده

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Dependences of QSO Lya absorption line statistics on cosmological parameters

We have performed high-resolution hydrodynamic simulations of the Lya forest in a variety of popular cold dark matter dominated cosmologies, including a low density and a vacuumdominated model. The ̄uctuation amplitude of these models is chosen to match the observed abundance of galaxy clusters at low redshift. We assume that the intergalactic medium is photoionized and photoheated by a uniform...

متن کامل

Dependencies of QSO Lyα absorption line statistics on cosmological parameters

We have performed high-resolution hydrodynamic simulations of the Lyα forest in a variety of popular cold dark matter dominated cosmologies, including a low density and a vacuum-dominated model. The fluctuation amplitude of these models is chosen to match the observed abundance of galaxy clusters at low redshift. We assume that the intergalactic medium is photoionized and photoheated by a unifo...

متن کامل

Weak Lensing: Prospects for Measuring Cosmological Parameters

Weak lensing of galaxies by large-scale structure can potentially measure cosmological quantities as accurately as the cosmic microwave background (CMB). However, the relation between observables and fundamental parameters is more complex and degenerate, especially in the full space of adiabatic cold dark matter models considered here. We introduce a Fisher matrix analysis of the information co...

متن کامل

Weak Lensing from Space Iii: Cosmological Parameters

Weak gravitational lensing provides a unique method to directly map the dark matter in the universe and measure cosmological parameters. The current weak lensing surveys are limited by the atmospheric seeing from the ground and by the small field of view of existing space telescopes. These limitations can be circumvented using wide field observations from space, such as those afforded by the fu...

متن کامل

Gravitational lensing statistics and constraints on the cosmological constant revisited

We re-analyze constraints on the cosmological constant that can be obtained by examining the statistics of strong gravitational lensing of distant quasars by intervening galaxies, focusing on on uncertainties in galaxy models (including velocity dispersion, luminosity functions, core radii and magnification bias effects) and on the parameters of the galaxy distribution and luminosity functions....

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Progress of Theoretical Physics Supplement

سال: 1999

ISSN: 0375-9687

DOI: 10.1143/ptps.133.115