Zobrazeno 1 - 10
of 38
pro vyhledávání: '"I. Suhhonenko"'
We investigate the evolution of superclusters and supercluster cocoons (basins of attraction), and the influence of cosmological parameters to the evolution. We perform numerical simulations of the evolution of the cosmic web for different cosmologic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c4d5d851b4bbe28f95e90b6e1eb86bbc
http://arxiv.org/abs/2005.03480
http://arxiv.org/abs/2005.03480
{We study biasing as a physical phenomenon by analysing geometrical and clustering properties of density fields of matter and galaxies.} {Our goal is to determine the bias function using a combination of geometrical and power spectrum analysis of sim
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fbb5f43692a55a5f7a216d4d01e69cfb
http://arxiv.org/abs/1906.03617
http://arxiv.org/abs/1906.03617
Aims. We investigate how properties of the ensemble of superclusters in the cosmic web evolve with time. Methods. We perform numerical simulations of the evolution of the cosmic web using the LambdaCDM model in box sizes L0 = 1024, 512, 256 Mpc/h. We
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::af844818599f0c62ce83e81632cbab4e
Aims. We develop an extended percolation method to allow the comparison of geometrical properties of the real cosmic web with the simulated dark matter web for an ensemble of over- and under-density systems. Methods. We scan density fields of dark ma
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3703db13de2009c7f684f575856fef18
http://arxiv.org/abs/1805.05866
http://arxiv.org/abs/1805.05866
Autor:
J. Jaaniste, M. Jõeveer, I. Suhhonenko, Pekka Heinämäki, Alexander Knebe, Volker Mueller, G. Huetsi, L. J. Liivamägi, Maret Einasto, Enn Saar, Douglas L. Tucker, Jaan Einasto, Erik Tago
Publikováno v:
Astronomy & Astrophysics. 462:811-825
We use the 2dF Galaxy Redshift Survey data to compile catalogues of superclusters for the Northern and Southern regions of the 2dFGRS, altogether 543 superclusters at redshifts 0.009 < z < 0.2. We analyse methods of compiling supercluster catalogues
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ba3eb36cc7eaaa99f39b2c0b5f9a3593
https://doi.org/10.1051/0004-6361:20065296
https://doi.org/10.1051/0004-6361:20065296
Autor:
Enn Saar, G. Huetsi, Douglas L. Tucker, M. Einasto, I. Suhhonenko, Jaan Einasto, P. Hein\\'am\\'aki, Erik Tago
Publikováno v:
Astronomy & Astrophysics. 439:45-58
We find clusters and superclusters of galaxies using the Data Release 1 of the Sloan Digital Sky Survey. We determine the luminosity function of clusters and find that clusters in a high-density environment have a luminosity a factor of ~5 higher tha
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::23e89e88c99a3d19f5234b00f3a2aeed
https://doi.org/10.1051/0004-6361:20042347
https://doi.org/10.1051/0004-6361:20042347
Autor:
Mirt Gramann, I. Suhhonenko
Publikováno v:
The Astrophysical Journal. 519:433-440
We examine the power spectrum of clusters in the Press-Schechter (PS) theory and in N-body simulations to see how the power spectrum of clusters is related to the power spectrum of matter density fluctuations in the Universe. An analytic model for th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::52fcbb5d4aa069e1bab1c2e61762729f
https://doi.org/10.1086/307377
https://doi.org/10.1086/307377
Autor:
Enn Saar, Lauri Juhan Liivamägi, Gert Hütsi, Erik Tago, Alexei A. Starobinsky, Jaan Einasto, Elmo Tempel, Volker Müller, Maret Einasto, I. Suhhonenko
Our goal is to see how density waves of different scale combine to form voids between galaxy systems of various scale. We perform numerical simulations of structure formation in cubes of size 100 and 256 Mpc/h, with resolutions 256^3 and 512^3 partic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1c14bc185539383e79c908b4bbb116ec
Autor:
Erik Tago, Gert Hütsi, Elmo Tempel, Alexei A. Starobinsky, Maret Einasto, I. Suhhonenko, Jaan Einasto, Enn Saar, Lauri Juhan Liivamägi, Volker Müller
We follow the evolution of galaxy systems in numerical simulation. Our goal is to understand the role of density perturbations of various scales in the formation and evolution of the cosmic web. We perform numerical simulations with the full power sp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::eb9df075e8c6071ee4454b7d85fd5bac
Autor:
Pekka Heinämäki, Enn Saar, Vicent J. Martínez, Pablo Arnalte-Mur, Alberto Fernández-Soto, I. Suhhonenko
Measurements of clustering in large-scale imaging surveys that make use of photometric redshifts depend on the uncertainties in the redshift determination. We have used light-cone simulations to show how the deprojection method successfully recovers
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::581ae3e274b1c77b2ac513d0957ef9dd
http://arxiv.org/abs/0812.4226
http://arxiv.org/abs/0812.4226