Publications (20)
Constraints on the Unseen Galaxy Population from the Lyman-alpha Forest
Kenneth M. Lanzetta, Hsiao-Wen Chen, John K. Webb +1
Here we describe results of our attempt to determine what types of galaxies are responsible for the Lyman-alpha forest absorption systems, based on our ongoing imaging and spectros…
XIPE: the X-ray Imaging Polarimetry Explorer
Paolo Soffitta, Xavier Barcons, Ronaldo Bellazzini +96
X-ray polarimetry, sometimes alone, and sometimes coupled to spectral and temporal variability measurements and to imaging, allows a wealth of physical phenomena in astrophysics to…
The colour of the Deep ROSAT X-ray sky fluctuations
M. Teresa Ceballos, Xavier Barcons, Francisco J. Carrera +1
We have carried out a fluctuation analysis in four bands (R4, R5, R6 and R7 corresponding to 0.44-1.01 keV, 0.56-1.21 keV, 0.73-1.56 keV and to 1.05-2.04 keV respectively) of two v…
INTEGRAL/XMM views on the MeV source GRO J1411-64
Diego F. Torres, Shu Zhang, Olaf Reimer +9
The COMPTEL unidentified source GRO J 1411-64 was observed by INTEGRAL and XMM-Newton in 2005. The Circinus Galaxy is the only source detected within the 4 location error of GR…
The NuSTAR view of the true Type 2 Seyfert NGC3147
Stefano Bianchi, Andrea Marinucci, Giorgio Matt +6
We present the first NuSTAR observation of a 'true' Type 2 Seyfert galaxy. The 3-40 keV X-ray spectrum of NGC3147 is characterised by a simple power-law, with a standard Î~1.7 and…
Abundance Constraints and Direct Redshift Measurement of the Diffuse X-ray Emission from a Distant Cluster of Galaxies
Yasuhiro Hashimoto, Xavier Barcons, Hans Boehringer +4
We report on the XMM-Newton (XMM) observation of RXJ1053.7+5735, one of the most distant X-ray selected clusters of galaxies, which also shows an unusual double-lobed X-ray morphol…