Institution
Institute of Cosmology and Gravitation, University of Portsmouth
About: Institute of Cosmology and Gravitation, University of Portsmouth is a based out in . It is known for research contribution in the topics: Galaxy & Redshift. The organization has 297 authors who have published 1207 publications receiving 76919 citations.
Topics: Galaxy, Redshift, Dark energy, Dark matter, Cosmic microwave background
Papers published on a yearly basis
Papers
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Valentina Guglielmo1, Roberto P. Saglia1, Roberto P. Saglia2, F. J. Castander3 +164 more•Institutions (47)
TL;DR: The European Space Agency (ESO) is a project of the European Commission and the European Research Council (ERCG) as mentioned in this paper, which aims to support the development of space technologies.
Abstract: European Space Agency
European Commission
Academy of Finland
European Commission
Agenzia Spaziale Italiana (ASI)
Belgian Federal Science Policy Office
Canadian Euclid Consortium
Centre National D'etudes Spatiales
Helmholtz Association
German Aerospace Centre (DLR)
Danish Space Research Institute
Fundacao para a Cienca e a Tecnologia
Spanish Government
National Aeronautics & Space Administration (NASA)
Netherlandse Onderzoekschool Voor Astronomie
Norvegian Space Center
Romanian Space Agency
State Secretariat for Education, Research and Innovation (SERI) at the Swiss Space Office (SSO)
United Kingdom Space Agency
ESO programme
199.A-0732
Helmholtz Association
German Aerospace Centre (DLR)
50 QE 1101
Spanish Ministry of Science, Innovation and Universities
ESP2017-89838-C3-1-R
H2020 programme of the European Commission
776247
Swiss National Science Foundation (SNSF)
European Commission
PRIN MIUR 2015 "Cosmology and Fundamental Physics: Illuminating the Dark Universe with Euclid"
17 citations
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TL;DR: In this article, the authors present catalogues of cosmic voids identified in the distribution of Luminous Red Galaxies and Quasi Stellar Objects (QSOs) in the fourteenth data release (DR14) of the extended Baryon Oscillation Spectroscopic Survey (eBOSS).
Abstract: We present catalogues of cosmic voids identified in the distribution of Luminous Red Galaxies (LRGs) and Quasi Stellar Objects (QSOs) in the fourteenth data release (DR14) of the extended Baryon Oscillation Spectroscopic Survey (eBOSS). We perform a multivariate analysis to assess the level of contamination in these catalogues by spurious Poisson underdensities. We find that the LRG void catalogue is largely free from contamination but that the QSO catalogue may be heavily contaminated. We analyse the multipoles of the void-galaxy cross-correlation function in these catalogues to obtain constraints on the growth rate of structure around voids. We find a value of $\beta(z=0.703)=0.58^{+0.33}_{-0.28}$ for the LRG voids and $\beta(z=1.53)=0.15^{+0.13}_{-0.12}$ for the QSO voids.
17 citations
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TL;DR: In this paper, Pearson, D. W., Samushia, L., and Gagrani, P. (2016). Optimal weights for measuring redshift space distortions in multitracer galaxy catalogues.
Abstract: Citation: Pearson, D. W., Samushia, L., & Gagrani, P. (2016). Optimal weights for measuring redshift space distortions in multitracer galaxy catalogues. Monthly Notices of the Royal Astronomical Society, 463(3), 2708-2715. doi:10.1093/mnras/stw2177
17 citations
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University of KwaZulu-Natal1, University of Sussex2, Liverpool John Moores University3, University of Manchester4, Carnegie Institution for Science5, University of Michigan6, Santa Cruz Institute for Particle Physics7, Ludwig Maximilian University of Munich8, University of Edinburgh9, Texas A&M University10, University of Oxford11, University of Porto12, Institute of Cosmology and Gravitation, University of Portsmouth13
TL;DR: In this paper, the authors measured the evolution of the velocity dispersion-temperature (sigma(v)-T-X) relation up to z = 1 using a sample of 38 galaxy clusters drawn from the XMM Cluster Survey.
Abstract: We measure the evolution of the velocity dispersion-temperature (sigma(v)-T-X) relation up to z = 1 using a sample of 38 galaxy clusters drawn from the XMM Cluster Survey. This work improves upon previous studies by the use of a homogeneous cluster sample and in terms of the number of high-redshift clusters included. We present here new redshift and velocity dispersion measurements for 12 z > 0.5 clusters observed with the Gemini Multi Object Spectographs instruments on the Gemini telescopes. Using an orthogonal regression method, we find that the slope of the relation is steeper than that expected if clusters were self-similar, and that the evolution of the normalization is slightly negative, but not significantly different from zero (sigma(v) alpha T0.86+/-0.14E(z)(-0.37+/-0.33)). We verify our results by applying our methods to cosmological hydrodynamical simulations. The lack of evolution seen in our data is consistent with simulations that include both feedback and radiative cooling.
16 citations
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TL;DR: In this paper, the behavior of the local and integrated contributions and how these depend on redshift range, linear and angular separations and luminosity function were analyzed using the recently developed formalism.
Abstract: Galaxy clustering on very large scales can be probed via the 2-point correlation function in the general case of wide and deep separations, including all the lightcone and relativistic effects. Using our recently developed formalism, we analyze the behavior of the local and integrated contributions and how these depend on redshift range, linear and angular separations and luminosity function. Relativistic corrections to the local part of the correlation can be non-negligible but they remain generally sub-dominant. On the other hand, the additional correlations arising from lensing convergence and time-delay effects can become very important and even dominate the observed total correlation function. We investigate different configurations formed by the observer and the pair of galaxies, and we find that the case of near-radial large-scale separations is where these effects will be the most important.
16 citations
Authors
Showing all 297 results
Name | H-index | Papers | Citations |
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Robert C. Nichol | 187 | 851 | 162994 |
Daniel Thomas | 134 | 846 | 84224 |
Will J. Percival | 129 | 473 | 87752 |
Tommaso Treu | 126 | 715 | 49090 |
Claudia Maraston | 103 | 362 | 59178 |
Marco Cavaglia | 93 | 372 | 60157 |
Ashley J. Ross | 90 | 248 | 46395 |
David A. Wake | 89 | 214 | 46124 |
László Á. Gergely | 89 | 426 | 60674 |
L. K. Nuttall | 89 | 253 | 54834 |
Rita Tojeiro | 87 | 229 | 43140 |
Roy Maartens | 86 | 432 | 23747 |
David Keitel | 85 | 253 | 56849 |
Davide Pietrobon | 83 | 152 | 62010 |
Gong-Bo Zhao | 81 | 287 | 35540 |