arXiv subjects

Memmo Federici

Publications and source records attributed to Memmo Federici.

2 recordsLinked to original sources

arXiv2008

Correlating the WFC and the IBIS hard X-ray surveys

During the operational life of BeppoSax, the Wide Field Camera observations covered almost the full sky at different epochs. The energy coverage, wide field of view and imaging capabilities share many commonalities with IBIS, the gamma-ray telescope onboard INTEGRAL satellite. We mosaicked all the available single pointing WFC observation images and then we searched the map for persistent and transient sources as has been done for the IBIS survey. This work represents the first unbiased source list compilation produced in this way from the overall WFC data set.

astro-ph↗

arXiv2006

Observing the high energy behaviour of the low mass X-ray binary XB 1832-330 with INTEGRAL

We report INTEGRAL/IBIS results on temporal and spectral behaviour of the Low Mass X-ray Binary XB 1832-330 located in the globular cluster NGC 6652. During the 2003-2005 monitoring of the Galactic Centre, the source shows a weak flux variability and an everage flux in the 20-150 keV of about 2*10^{-10} erg s^{-1} cm^{-2}. The overall energy spectrum extends up to 150 keV and is well described by a Comptonization model with an electrons temperature of $\sim$ 22 keV and a plasma optical depth of 1.8. We thus confirm the persistent nature of this burtser.

astro-ph↗