Zobrazeno 1 - 10
of 293
pro vyhledávání: '"P. Teerikorpi"'
Autor:
Heinämäki, Pekka, Teerikorpi, Pekka, Douspis, Marian, Nurmi, Pasi, Einasto, Maret, Gramann, Mirt, Nevalainen, Jukka, Saar, Enn
Publikováno v:
A&A 668, A37 (2022)
Generally the dynamical state of superclusters is poorly known. We study properties of superclusters and select a sample of quasi-spherical superclusters, the dynamics of which can be studied using the $\Lambda$ significance diagram. We extracted our
Externí odkaz:
http://arxiv.org/abs/2210.13294
Publikováno v:
Found.Phys. 47, 1208 (2017)
We have had the chance to live through a fascinating revolution in measuring the fundamental empirical cosmological Hubble law. The key progress is analysed : 1) improvement of observational means (ground-based radio and optical observations, space m
Externí odkaz:
http://arxiv.org/abs/1801.00128
Publikováno v:
A&A 590, A29 (2016)
To understand the role of the environment in galaxy formation, evolution, and present-day properties, it is essential to study the multi-frequency behavior of different galaxy populations under various environmental conditions. We crossmatch the SDSS
Externí odkaz:
http://arxiv.org/abs/1603.01773
Autor:
Teerikorpi, Pekka, Baryshev, Yurij
We discuss how the redshift (Mattig) method in Friedmann cosmology relates to dynamical distance indicators based on Newton's gravity (Teerikorpi 2011). It belongs to the class of indicators where the relevant length inside the system is the distance
Externí odkaz:
http://arxiv.org/abs/1601.05652
Autor:
Gramann, Mirt, Einasto, Maret, Heinämäki, Pekka, Teerikorpi, Pekka, Saar, Enn, Nurmi, Pasi, Einasto, Jaan
Publikováno v:
A&A 581, A135 (2015)
The formation and evolution of the cosmic web in which galaxy superclusters are the largest relatively isolated objects is governed by a gravitational attraction of dark matter and antigravity of dark energy (cosmological constant). We study the char
Externí odkaz:
http://arxiv.org/abs/1506.05252
Autor:
Teerikorpi, P.
Publikováno v:
A&A 576, A75 (2015)
In 1914, Eddington derived a formula for the difference between the mean absolute magnitudes of stars "in space" or gathered "from the sky". Malmquist (1920) derived a general relation for this difference in Euclidean space. Here we study this statis
Externí odkaz:
http://arxiv.org/abs/1503.02812
Autor:
Teerikorpi, P., Heinämäki, P., Nurmi, P., Chernin, A. D., Einasto, M., Valtonen, M., Byrd, G.
Publikováno v:
A&A 577, A144 (2015)
The current cosmological paradigm sees the formation and evolution of the cosmic large-scale structure as governed by the gravitational attraction of the Dark Matter (DM) and the repulsion of the Dark Energy (DE). We characterize the relative importa
Externí odkaz:
http://arxiv.org/abs/1503.02805
Einstein's General Relativity theory has been tested in many ways during the last hundred years as reviewed in this chapter. Two tests are discussed in detail in this article: the concept of a zero gravity surface, the roots of which go back to J\"ar
Externí odkaz:
http://arxiv.org/abs/1411.5860
Autor:
Saaristo, Joonas, Teerikorpi, Pekka
We study the influence of relevant quantities, including the density of dark energy (DE), to the predicted Hubble outflow around a system of galaxies. In particular, we are interested in the difference between two models: 1) The standard $\Lambda$CDM
Externí odkaz:
http://arxiv.org/abs/1402.0950
Autor:
Chernin, A. D., Bisnovatyi-Kogan, G. S., Teerikorpi, P., Valtonen, M. J., Byrd, G. G., Merafina, M.
{We consider the Coma cluster of galaxies as a gravitationally bound physical system embedded in the perfectly uniform static dark energy background as implied by the $\Lambda$CDM cosmology.} {We ask if the density of dark energy is high enough to af
Externí odkaz:
http://arxiv.org/abs/1303.3800