@misc{Kashlinsky1998, abstract = { It is shown how data on the cluster correlation function can be used in order to reconstruct the density of the pregalactic density field on the cluster mass scale. The method is applied to the data on the cluster correlation amplitude -- richness dependence. The spectrum of the recovered density field has the same shape as the density field derived from data on the galaxy correlation function which is measured as function of linear scales. Matching the two amplitudes relates the mass to the comoving scale it contains and thereby leads to a direct determination of $\Omega$. The resultant density parameter turns out to be $\Omega$=0.25. }, added-at = {2011-04-23T19:03:01.000+0200}, author = {Kashlinsky, A.}, biburl = {https://www.bibsonomy.org/bibtex/2ad416aa019f26b305b83486785c4c4a2/ad4}, description = {Determining $\Omega$ from cluster correlation function}, interhash = {0ff12b8becf7d683414e4b0f79433659}, intrahash = {ad416aa019f26b305b83486785c4c4a2}, keywords = {Clusters Dark Galaxy Matter}, note = {cite arxiv:astro-ph/9806236 Comment: to appear in Physics Reports, "Dark Matter 98", vol.306}, timestamp = {2011-04-23T19:03:01.000+0200}, title = {Determining $\Omega$ from cluster correlation function}, url = {http://arxiv.org/abs/astro-ph/9806236}, year = 1998 } @misc{Bahcall1998, abstract = { The existence of the three most massive clusters of galaxies observed so far at z>0.5 is used to constrain the mass density parameter of the universe, Omega, and the amplitude of mass fluctuations, sigma_8. We find Omega=0.2 (+0.3,-0.1), and sigma_8=1.2 (+0.5,-0.4) (95 %). We show that the existence of even the single most distant cluster at z=0.83, MS1054-03, with its large gravitational lensing mass, high temperature, and large velocity dispersion, is sufficient to establish powerful constraints. High-density, Omega=1 (sigma_8 ~ 0.5-0.6) Gaussian models are ruled out by these data (< 10^{-6} probability); the Omega=1 models predict only ~10^{-5} massive clusters at z > 0.65 (~10^{-3} at z > 0.5) instead of the 1 (3) clusters observed. }, added-at = {2011-04-23T18:53:30.000+0200}, author = {Bahcall, Neta A. and Fan, Xiaohui}, biburl = {https://www.bibsonomy.org/bibtex/25959653151ba0e18905ddb068b6cef31/ad4}, description = {The Most Massive Distant Clusters: Determining Omega and sigma_8}, interhash = {c9a74267791af8c038f5685d5aebd6a0}, intrahash = {5959653151ba0e18905ddb068b6cef31}, keywords = {Clusters Dark Galaxy Matter}, note = {cite arxiv:astro-ph/9803277 Comment: 14 pages, 4 Postscript figures, ApJ in press}, timestamp = {2011-04-23T18:53:30.000+0200}, title = {The Most Massive Distant Clusters: Determining Omega and sigma_8}, url = {http://arxiv.org/abs/astro-ph/9803277}, year = 1998 } @misc{Brownstein2005, abstract = { We apply the modified acceleration law obtained from Einstein gravity coupled explaining galaxy rotation curves without exotic dark matter. Our sample of galaxies includes low surface brightness (LSB) and high surface brightness (HSB) galaxies, and an elliptical galaxy. In those cases where photometric data are available, a best fit via the single parameter (M/L)_{stars} to the luminosity of the gaseous (HI plus He) and luminous stellar disks is obtained. Additionally, a best fit to the rotation curves of galaxies is obtained in terms of a parametric mass distribution (independent of luminosity observations) -- a two parameter fit to the total galactic mass, (or mass-to-light ratio M/L), and a core radius associated with a model of the galaxy cores using a nonlinear least-squares fitting routine including estimated errors. The fits are compared to those obtained using Milgrom's phenomenological MOND model and to the predictions of the Newtonian-Kepler acceleration law. }, added-at = {2009-09-02T16:20:17.000+0200}, author = {{Brownstein}, J. R. and {Moffat}, J. W.}, biburl = {https://www.bibsonomy.org/bibtex/22fe140028deb9adf99b0e22c31f1e77f/ad4}, description = {Galaxy Rotation Curves Without Non-Baryonic Dark Matter}, interhash = {b9e1901cafaf1524723079fcc00a2013}, intrahash = {2fe140028deb9adf99b0e22c31f1e77f}, keywords = {Curve Dark Galaxy Matter Rotation}, note = {cite arxiv:astro-ph/0506370 Comment: 43 pages, 7 figures, 4 tables, 101 galaxies. Submitted to ApJ, June 20, 2005. Accepted for publication in ApJ, September 21, 2005. To be published in ApJ 636 (January 10, 2006)}, timestamp = {2009-09-02T16:20:18.000+0200}, title = {{G}alaxy {R}otation {C}urves {W}ithout {N}on-{B}aryonic {D}ark {M}atter}, url = {http://arxiv.org/abs/astro-ph/0506370}, year = 2005 }