XEUS: the physics of the hot evolving universe (2009)
Arnaud, Monique, Barcons, Xavier, Barret, Didier, Bautz, Marshall, Bellazzini, Ronaldo, Bleeker, Johan, ...
Muleri, Fabio, Soffitta, Paolo, Bellazzini, Ronaldo, Brez, Alessandro, Costa, Enrico, Frutti, Massimo, ...
We devised and built a versatile facility for the calibration of the next generation X-ray polarimeters with unpolarized and polarized radiation. The former is produced at 5.9 keV by means of a Fe55...
The Gas Pixel Detector as an X-ray photoelectric polarimeter with a large field of view (2008)
Muleri, Fabio, Soffitta, Paolo, Bellazzini, Ronaldo, Brez, Alessandro, Costa, Enrico, Fabiani, Sergio, ...
The Gas Pixel Detector (GPD) is a new generation device which, thanks to its 50 um pixels, is capable of imaging the photoelectrons tracks produced by photoelectric absorption in a gas. Since the...
XPOL: a photoelectric polarimeter onboard XEUS (2008)
Costa, Enrico, Bellazzini, Ronaldo, Bregeon, Jean, Brez, Alessandro, Frutti, Massimo, Di Cosimo, Sergio, ...
The XEUS mission incorporates two satellites: the Mirror Spacecraft with 5 m2 of collecting area at 1 keV and 2 m2 at 7 keV, and an imaging resolution of 5" HEW and the Payload Spacecraft which...
X-ray polarimetry on-board HXMT (2008)
Soffitta, Paolo, Bellazzini, Ronaldo, Tagliaferri, Gianpiero, Costa, Enrico, Pareschi, Giovanni, Basso, Stefano, ...
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 focus of grazing...
The XEUS focal plane instruments (2008)
Strüder, Lothar, Barret, Didier, Bellazzini, Ronaldo, Duband, Lionel, Martin, Didier, ...
A very compact polarizer for an X-ray polarimeter calibration (2007)
Muleri, Fabio, Soffitta, Paolo, Bellazzini, Ronaldo, Brez, Alessandro, Costa, Enrico, Fabiani, Sergio, ...
We devised and built a light, compact and transportable X-ray polarized source based on the Bragg diffraction at nearly 45 degrees. The source is composed by a crystal coupled to a small power X-ray...
An X-ray Polarimeter for HXMT Mission (2007)
Costa, Enrico, Bellazzini, Ronaldo, Tagliaferri, Gianpiero, Baldini, Luca, Basso, Stefano, Bregeon, Johan, ...
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 focus of grazing...
A photoelectric polarimeter for XEUS: a new window in x-ray sky (2006)
Bellazzini, Ronaldo, Baldini, Luca, Bitti, Francesco, Brez, Alessandro, Cavalca, Francesco, Latronico, Luca, ...
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 formation flight, one...
An X-ray polarimeter for hard X-ray optics (2006)
Muleri, Fabio, Bellazzini, Ronaldo, Costa, Enrico, Soffitta, Paolo, Lazzarotto, Francesco, Feroci, Marco, ...
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 Micro Pattern Gas...
POLARIX: a small mission of x-ray polarimetry (2006)
Costa, Enrico, Bellazzini, Ronaldo, Soffitta, Paolo, Muleri, Fabio, Feroci, Marco, Frutti, Massimo, ...
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 since the technique...
An efficient photoelectric X-ray Polarimeter for the study of Black Holes and Neutron Stars (2001)
Costa, Enrico, Soffitta, Paolo, Bellazzini, Ronaldo, Brez, Alessandro, Lumb, Nicholas, Spandre, Gloria
In astronomy there are basically four kinds of observations to extract the information carried by electromagnetic radiation: photometry, imaging, spectroscopy and polarimetry. By optimal exploitation...
Astronomical x-ray polarimetry based on photoelectric effect with microgap detectors (2000)
Soffitta, Paolo, Costa, Enrico, Di Persio, Giuseppe, Morelli, Ennio, Rubini, Alda, Bellazzini, Ronaldo, ...
The polarisation of x-ray photons can be determined by measuring the direction of emission of a K-shell photoelectron. Effective exploitation of this effect below 10 keV would allow development of a...
Trivella, M Giovanna, Armour, J Andrew, Vacche, Margherita Dalle, Paoli, Carlo, Porinelli, Raffaello, Bellazzini, Ronaldo, ...
Objective: The aim was to study the effect of stimulating individual acutely decentralised cardiopulmonary nerves on myocardial uptake of deoxyglucose. Methods: In 17 open chest anaesthetised dogs...