217 citations · 940 across the 19 of their papers we have counts for
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An X-ray Polarimeter for HXMT Mission
Enrico Costa, Ronaldo Bellazzini, Gianpiero Tagliaferri +17
The development of micropixel gas detectors, capable to image tracks produced in a gas by photoelectrons, makes possible to perform polarimetry of X-ray celestial sources in the fo…
The broad band spectrum and variability of NGC 4151 observed by BeppoSAX
A. De Rosa, L. Piro, G. C. Perola +5
We present an analysis of all SAX observations of NGC 4151. This source was observed 5 times from 1996 to 2001 with durations ranging from a day to four days. The intrinsic continu…
POLARIX: a small mission of x-ray polarimetry
Enrico Costa, Ronaldo Bellazzini, Paolo Soffitta +24
X-Ray Polarimetry can be now performed by using a Micro Pattern Gas Chamber in the focus of a telescope. It requires large area optics for most important scientific targets. But si…
An X-ray polarimeter for hard X-ray optics
Fabio Muleri, Ronaldo Bellazzini, Enrico Costa +23
Development of multi-layer optics makes feasible the use of X-ray telescope at energy up to 60-80 keV: in this paper we discuss the extension of photoelectric polarimeter based on…
A photoelectric polarimeter for XEUS: a new window in x-ray sky
Ronaldo Bellazzini, Luca Baldini, Francesco Bitti +18
XEUS is a large area telescope aiming to rise X-ray Astronomy to the level of Optical Astronomy in terms of collecting areas. It will be based on two satellites, locked on a format…
A model for the X-ray absorption in Compton--thin AGN
Alessandra Lamastra, G. Cesare Perola, Giorgio Matt
The fraction of AGN with photoelectric absorption in the X-rays ranging from NH of 10^{22} up to about 10^{24} cm^{-2} (Compton-thin) appears observationally to be anticorrelated t…