Giovedi 25 Maggio 2017, h. 11:30 
 Aula L. Rosino Dipartimento di Fisica e Astronomia

Martino Marelli e David Salvetti

  INAF - IASF, Milano

 Exploring the X-ray Transient and variable Sky




Modern X-ray observatories can yield unique insights into time domain astrophysics. Indeed, a huge amount of information is already stored - and largely unexploited - in data archives. The EXTraS project is harvesting the hitherto unexplored temporal domain information buried in the serendipitous data collected by the European Photon Imaging Camera (EPIC) instrument onboard the ESA XMM-Newton mission since its launch. This include a search for fast transients, missed by standard image analysis, as well as a search and characterization of variability (both periodic and aperiodic) in hundreds of thousands of sources spanning more than nine orders of magnitude in time scale (from <1 s to >10 yr) and six orders of magnitude in flux (from 10^-9 to 10^-15 erg cm^-2 s^-1 in 0.2-12 keV). All our results, together with new analysis tools, are made available to the community. The EXTraS project (2014-2016), funded within the EU/FP7 Cooperation Space framework, is carried out by a collaboration including INAF (Italy), IUSS (Italy), CNR/IMATI (Italy), University of Leicester (UK), MPE (Germany) and ECAP (Germany).




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