437 citations · 1.1k across the 12 of their papers we have counts for
9 papers · 1 filter
BeppoSAX Spectral Survey of BL Lacs - new spectra and results
V. Beckmann, A. Wolter, A. Celotti +4
We present BeppoSAX LECS, MECS, and PDS spectra of eleven X-ray selected BL Lacertae objects. Combining these sources with the ones presented elsewhere we have a sample of 21 BL La…
Spectral Energy Distributions of 3C 279 revisited: BeppoSAX observations and variability models
L. Ballo, L. Maraschi, F. Tavecchio +9
We present the BeppoSAX observations of 3C 279 performed in 1997 January 13-23 simultaneously with gamma-ray pointings with EGRET on board CGRO and optical observations at the Tori…
Sub-parsec to Mega-parsec jet emission and power
G. Ghisellini, A. Celotti
Relativistic jets carry a significant fraction of the total energy budget of a radio source, rivaling the power that is extracted through accretion. A minor part of this bulk kinet…
The dividing line between FR I and FR II radio--galaxies
G. Ghisellini, A. Celotti
In the radio - host galaxy optical luminosity plane FR I and FR II radio-galaxies are clearly divided. Since the optical luminosity of an elliptical galaxy is an indication of the…
1WGAJ1226.9+3332: a high redshift cluster discovered by Chandra
I. Cagnoni, M. Elvis, D. -W. Kim +3
We report the detection of 1WGAJ1226.9+3332 as an arcminute scale extended X-ray source with the Chandra X-ray Observatory. The Chandra observation and R and K band imaging strongl…
Extreme synchrotron BL Lac objects
L. Costamante, G. Ghisellini, P. Giommi +8
We performed an observational program with the X-ray satellite BeppoSAX to study objects with extreme synchrotron peak frequencies (nu_peak > 1 keV). Of the seven sources observed,…