Zobrazeno 1 - 10
of 38
pro vyhledávání: '"Schmalzing, Jens"'
We analyze the Minkowski functionals with a large $N$-body simulation of a standard $\Lambda$CDM model, focusing on transition scales between linear and non-linear gravitational evolution. We numerically calculate the Minkowski functionals with suffi
Externí odkaz:
http://arxiv.org/abs/astro-ph/0408428
Autor:
Hikage, Chiaki, Schmalzing, Jens, Buchert, Thomas, Suto, Yasushi, Kayo, Issha, Taruya, Atsushi, Vogeley, Michael S., Hoyle, Fiona, Gott III, J. Richard, Brinkmann, Jon
Publikováno v:
Publ.Astron.Soc.Jap.55:911-931,2003
We present a first morphometric investigation of a preliminary sample from the SDSS of 154287 galaxies with apparent magnitude 14.5
Externí odkaz:
http://arxiv.org/abs/astro-ph/0304455
We point out that polarization measurements as planned for the upcoming PLANCK mission can significantly enhance the accuracy of cosmic parameter estimation compared to the temperature anisotropy spectrum alone. In order to illustrate this, we consid
Externí odkaz:
http://arxiv.org/abs/astro-ph/0102378
We use the recent CMB power spectrum measurement by the Maxima experiment (Hanany et al. 2000) to constrain the redshift of reionization z_re. This becomes possible by combining the CMB data with cosmological parameters from various independent measu
Externí odkaz:
http://arxiv.org/abs/astro-ph/0010063
We investigate the non-Gaussian signatures in Cosmic Microwave Background (CMB) maps induced by the intervening large-scale structure through weak lensing. In order to measure the deviation from the Gaussian behavior of the intrinsic temperature anis
Externí odkaz:
http://arxiv.org/abs/astro-ph/0008502
Publikováno v:
Astron.Astrophys.364:17-25,2000
We consider a cosmological model with non-Gaussian initial perturbations, which in principle could be generated in non-standard inflationary scenarios with two or more scalar fields. In particular we focus our attention on the model proposed by Linde
Externí odkaz:
http://arxiv.org/abs/astro-ph/0006097
Autor:
Schmalzing, Jens, Diaferio, Antonaldo
Publikováno v:
Mon.Not.Roy.Astron.Soc. 312 (2000) 638-648
We analyse the redshift space topology and geometry of the nearby Universe by computing the Minkowski functionals of the Updated Zwicky Catalogue (UZC). The UZC contains the redshifts of almost 20,000 galaxies, is 96% complete to the limiting magnitu
Externí odkaz:
http://arxiv.org/abs/astro-ph/9910228
Publikováno v:
Mon.Not.Roy.Astron.Soc. 309 (1999) 1007-1016
We use a high-resolution dissipationless simulation to study the evolution of the dark matter and halo distributions in a spatially flat cosmological model dominated by a cosmological constant $\Lambda$ and cold dark matter ($\Lambda$CDM). In order t
Externí odkaz:
http://arxiv.org/abs/astro-ph/9906475
Autor:
Schmalzing, Jens, Buchert, Thomas, Melott, Adrian L., Sahni, Varun, Sathyaprakash, B. S., Shandarin, Sergei F.
Publikováno v:
Astrophys.J.526:568-578,1999
We apply Minkowski functionals and various derived measures to decipher the morphological properties of large-scale structure seen in simulations of gravitational evolution. Minkowski functionals of isodensity contours serve as tools to test global p
Externí odkaz:
http://arxiv.org/abs/astro-ph/9904384