Constraining the cosmological parameters using strong lensing
نویسندگان
چکیده
منابع مشابه
Constraining Cosmological Parameters with Cmb Measurements
The current enthusiam to measure fluctuations in the CMB power spectrum at angular scales between 0.1 and 1 is largely motivated by the expectation that CMB determinations of cosmological parameters will be of unprecedented precision. In such circumstances it is important to estimate what we can already say about the cosmological parameters. In two recent papers (Lineweaver et al. 1997a & 1997b...
متن کاملWeak 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 کاملWeak 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 کاملConstraining Galaxy Mass Profiles with Strong Gravitational Lensing
Measured time delays between the images of a gravitationally lensed source can lead to a determination of the Hubble constant (Ho), but only if the lensing mass distribution is well understood. The inability to sufficiently constrain galaxy mass models results in large uncertainties on the derived Ho, and severely hampers the cosmological application of this otherwise elegant method. At the sam...
متن کاملCosmological parameters from strong gravitational lensing and stellar dynamics in elliptical galaxies
Context. Observations of the cosmic microwave background, light element abundances, large-scale distribution of galaxies, and distant supernovae are the primary tools for determining the cosmological parameters that define the global structure of the Universe. Aims. Here we illustrate how the combination of observations related to strong gravitational lensing and stellar dynamics in elliptical ...
متن کاملذخیره 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: Astronomy & Astrophysics
سال: 2002
ISSN: 0004-6361,1432-0746
DOI: 10.1051/0004-6361:20020448