Alessandro Coletta

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In 2007 and 2008 ASI (Agenzia Spaziale Italiana/Italian Space Agency) launched three out of four X-band SAR satellites of the COSMO-SkyMed (COnstellation of small Satellites for Mediterranean basin Observation) Mission, making available to the users a unique SAR constellation dedicated to the Earth Observation. The constellation will be completed with the(More)
The 25 April 2015 Mw 7.8 Gorkha earthquake caused more than 8000 fatalities and widespread building damage in central Nepal. The Italian Space Agency’s COSMO–SkyMed Synthetic Aperture Radar (SAR) satellite acquired data over Kathmandu area four days after the earthquake and the Japan Aerospace Exploration Agency’s Advanced Land Observing Satellite-2 SAR(More)
The results of a BeppoSAX TOO observation of the BL Lac object Mkn421 during a high intensity state are reported and compared with monitoring X-ray data collected with the BeppoSAX Wide Field Cameras (WFC) and the RXTE All Sky Monitor(ASM). The 0.1-100 keV spectrum of Mkn421 shows continuous convex curvature that can be interpreted as the high-energy end of(More)
Hydronium ions produced by photolysis of water are used to study the protonation dynamics of alanine zwitterions in water. The measurements are done by UV-VIS and UV-IR femtosecond transient absorption spectroscopy on alanine in H2O and D2O. It is estimated that the reaction rate constant for the deuteration of alanine zwitterions is 4 × 1010 M-1 s-1, while(More)
We present BeppoSAX GRBM and WFC light curves of GRB980425 and NFI follow-up data taken in 1998 April, May, and November. The first NFI observation has detected within the 8′ radius error box of the GRB an X-ray source positionally consistent with the supernova SN 1998bw, exploded within a day of GRB980425, and a fainter X-ray source, not consistent with(More)
The data exploitation of the COSMO-SkyMed Mission allows the users to utilise innovative high resolution X-band data generated by the first European civilian radar constellation. The Data Exploitation of the Mission is lead separately for the institutional and commercial user. The former is supported by ASI (Agenzia Spaziale Italiana/Italian Space Agency);(More)
In 2007 and 2008 ASI (Agenzia Spaziale Italiana, the Italian Space Agency) launched three out of four X-band SAR satellites of the COSMO-SkyMed Mission, making available to the users a unique SAR constellation dedicated to the Earth Observation. While the almost completed constellation with three satellites is fully operational from August 2009, the launch(More)