Dr
Roberta Sparvoli
(ROMA2)
21/06/2012, 09:00
Direct measurements of the chemical composition and fluxes of cosmic rays have
always played a crucial role in advancing our understanding of both acceleration and
propagation of cosmic rays. Direct detection is performed with three basic technologies: balloon-borne and satellite-borne detectors, and instruments placed aboard space stations.
In this talk I will present the basic principles...
UGO GIACCARI
(INFN Napoli)
21/06/2012, 09:35
Recent observations from PAMELA show that the cosmic ray proton spectrum does not follow a single power law model in the rigidity range between 1 GV to 1.2 TV. The spectrum gradually softens from 30 GV up to 230 GV but around ~240 GV the spectrum becomes harder. This observed behavior is in contradiction with the predictions of a shock diffusion acceleration model and diffusive acceleration in...
Carmelo Sgro'
(INFN-Pisa)
21/06/2012, 10:00
The Fermi Large Area Telescope (LAT) is an international observatory designed to study the high-energy gamma-ray sky. The gamma-ray events are identified and reconstructed from the signature of their electromagnetic showers in the instrument and it can therefore be used to observe cosmic-ray electrons and positrons thanks to its flexible triggering and filtering capabilities on-board. The...
Dr
Cecilia Pizzolotto
(INFN Perugia)
21/06/2012, 10:25
The Alpha Magnetic Spectrometer (AMS) is a precision particle physics magnetic spectrometer designed to measure electrons, positrons, gamma rays and various nuclei and anti-nuclei from the cosmos up to TeV energy ranges. It was delivered to the International Space Station onboard space shuttle Endeavour and installed on May 19, 2011. Since that time, more than 14 billion cosmic ray events...
Dr
Pasquale Blasi
(INAF/Osservatorio Astrofisico di Arcetri)
21/06/2012, 10:50
I will describe the current status of the understanding of the acceleration and propagation of Galactic cosmic rays and discuss some recent observational results on the spectrum, composition and anisotropy of these particles. Special attention will be devoted to successes and problems of the so-called supernova remnant paradigm for the origin of cosmic rays, in the light of the recent gamma...
