Overdensity of X-Ray sources near 3C 295: a candidate filament
| dc.creator | D'Elia, V. | |
| dc.creator | Fiore, F. | |
| dc.creator | Cocchia, F. | |
| dc.date | 2004-07-22 | |
| dc.date.accessioned | 2026-07-07T02:14:05Z | |
| dc.date.available | 2026-07-07T02:14:05Z | |
| dc.description | We present a statistical analysis of the Chandra observation of the source field around the 3C 295 galaxy cluster (z=0.46) aimed at the search for clustering of X-ray sources. Three different methods of analysis, namely a chip by chip logN-logS, a two dimensional Kolmogorov-Smirnov test, and the angular correlation function (ACF) show a strong overdensity of sources in the North-East of the field. In particular, the ACF shows a clear signal on scales of 0.5 - 5 arcmin. This correlation angle is > 2 times higher than that of a sample of 8 ACIS-I field at the 2.5 sigma confidence level. If this overdensity is spatially associated to the cluster, we are observing a 'filament' of the large scale structure of the Universe. We discuss some first results that seem to indicate such an association. | |
| dc.description | 4 pages, 8 ps figures, proceeding of the 6th italian workshop on AGNs | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0407477 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0407477 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/7985 | |
| dc.subject | Astrophysics | |
| dc.title | Overdensity of X-Ray sources near 3C 295: a candidate filament | |
| dc.type | text |