The Faint X-ray Source Population Near the 3C 295 cluster
  We present a statistical analysis of the Chandra observation of the source field around the 3C 295 galaxy cluster (z=0.46). Three different methods of analysis, namely a chip by chip logN-logS, a two dimentional Kolmogorov-Smirnov (KS) test, and the angular correlation function (ACF) show a strong overdensity of sources in the North-East of the field, that may indicate a filament of the large scale structure of the Universe toward 3C 295. 
V. D'Elia, F. Fiore, M. Elvis, M. Cappi, S. Mathur, P. Mazzotta, E.   Falco & F. Cocchia