5 papers · 1 filter
Chandra observations of X-ray source overdensities in distant galaxy cluster fields
N. Cappelluti, M. Cappi, M. Dadina +4
The first systematic study of the serendipitous X-ray source density around 10 high z (0.24<z<1.2) clusters performed with Chandra is presented. A factor \~2 overdensity has been f…
Overdensity of X-Ray sources near 3C 295: a candidate filament
V. D'Elia, F. Fiore, F. Cocchia
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. Thre…
The Faint X-ray Source Population Near the 3C 295 cluster
V. D'Elia, F. Fiore, M. Elvis +5
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 ch…
Revisiting the Blazar Main Sequence
A. Cavaliere, V. D'Elia
A discussion of the FSRQ -- BL Lac unification. All distinctive features marking these two Blazar subclasses find an unifying explanation if the sources are powered by central engi…
The Connection between BL Lacs and FSRQs
V. D'Elia, A. Cavaliere
We discuss the features that mark the Flat Spectrum Radio Quasars from the BL Lacertae objects. We propose that FSRQs exceeding L = 10^{46} erg/s are powered by black hole accretin…