Large-scale structure in the HI Parkes All-Sky Survey : filling the voids with HI galaxies?
- S. Basilakos, M. Plionis, K. Kovač, N. Voglis
- Physics
- 28 March 2007
We estimate the two-point correlation function in redshift space of the recently compiled HI Parkes All-Sky Survey neutral hydrogen (HI) sources catalogue, which if modelled as a power law, xi(r) =…
Clustering, Bias and the Accretion Mode of X-ray selected AGN
- L. Koutoulidis, M. Plionis, I. Georgantopoulos, N. Fanidakis
- Physics
- 28 September 2012
We present the spatial clustering properties of 1466 X-ray s elected AGN compiled from the ChandraCDF-N, CDF-S, eCDF-S, COSMOS and AEGIS fields in the0.5−8 keV band. The X-ray sources span the…
The XMM-Newton/2dF Survey — VI. Clustering and bias of the soft X-ray point sources
- S. Basilakos, M. Plionis, A. Georgakakis, I. Georgantopoulos
- Physics
- 28 September 2004
We study the clustering properties of X-ray sources detected in the wide area (∼2 deg 2 ) bright, contiguous XMM-Newton/2dF survey. We detect 432 objects to a flux limit of 5 x 10 -15 erg cm -2 s -1…
The Aspen-Amsterdam void finder comparison project
- J. Colberg, F. Pearce, D. University
- Physics
- 6 March 2008
Despite a history that dates back at least a quarter of a century studies of voids in the large–scale structure of the Universe are bedevilled by a major problem: there exist a large number of quite…
A Pan-Chromatic View of Clusters of Galaxies and the Large-Scale Structure
- M. Plionis, O. López-Cruz, D. Hughes
- Physics
- 2008
1. Gas Dynamics in Clusters of Galaxies. 2. Dynamics of the Hot Intracluster Medium. 3. Dynamics of Galaxies and Cluster of Galaxies. 4. Optical Detection of Clusters of Galaxies. 5. Clusters of…
The L–σ relation for massive bursts of star formation
- R. Ch'avez, R. Terlevich, S. Basilakos
- Physics
- 15 May 2014
The validity of the emission line luminosity vs. ionised gas velocity dispersion ($L - \sigma$) correlation for HII galaxies (HIIGx), and its potential as an accurate distance estimator are assessed.…
The XXL Survey - I. Scientific motivations − XMM-Newton observing plan − Follow-up observations and simulation programme
Context. The quest for the cosmological parameters that describe our universe continues to motivate the scientific community to undertake very large survey initiatives across the electromagnetic…
On the road to precision cosmology with high redshift HII galaxies
- R. Terlevich, E. Terlevich, S. Basilakos
- Physics
- 17 May 2015
We report the first results of a programme aimed at studying the properties of high redshift galaxies with on-going massive and dominant episodes of star formation (HII galaxies). We use the…
The Clustering of XMM-Newton Hard X-Ray Sources
- S. Basilakos, A. Georgakakis, M. Plionis, I. Georgantopoulos
- Physics
- 8 April 2004
This Letter presents the clustering properties of hard (2-8 keV) X-ray-selected sources detected in a wide-field (≈2 deg2), shallow [fX(2-8 keV) ≈ 10-14 ergs cm-2 s-1], and contiguous XMM-Newton…
The size and shape of local voids
- M. Plionis, S. Basilakos
- Physics
- 21 February 2002
We study the size and shape of low-density regions in the local Universe, which we identify in the smoothed density field of the PSCz flux-limited IRAS galaxy catalogue. After quantifying the…
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