Publications (5)
Matching in a family of piecewise affine maps
Henk Bruin, Carlo Carminati, Stefano Marmi +1
We consider a class of simple one parameter families of interval maps, and we study how metric (resp. topological) entropy changes as the parameter varies. We show that in many cas…
Calibration of the IXPE focal plane X-ray polarimeters to polarized radiation
Alessandro Di Marco, Sergio Fabiani, Fabio La Monaca +80
IXPE (Imaging X-ray Polarimetry Explorer) is a NASA Small Explorer mission -- in partnership with the Italian Space Agency (ASI) -- dedicated to X-ray polarimetry in the 2--8 keV e…
The entropy of alpha-continued fractions: numerical results
Carlo Carminati, Stefano Marmi, Alessandro Profeti +1
We consider the one-parameter family of interval maps arising from generalized continued fraction expansions known as alpha-continued fractions. For such maps, we perform a numeric…
The Imaging X-Ray Polarimetry Explorer (IXPE): Pre-Launch
Martin C. Weisskopf, Paolo Soffitta, Luca Baldini +155
Scheduled to launch in late 2021, the Imaging X-ray Polarimetry Explorer (IXPE) is a NASA Small Explorer Mission in collaboration with the Italian Space Agency (ASI). The mission w…
The Instrument of the Imaging X-ray Polarimetry Explorer
Paolo Soffitta, Luca Baldini, Ronaldo Bellazzini +78
While X-ray Spectroscopy, Timing and Imaging have improved verymuch since 1962, when the first astronomical non-solar source was discovered, especially with the launch of Newton/X-…