The Large Area Telescope (LAT) on the Fermi Gamma-ray Space Telescope provides both direct and indirect measurements of galactic cosmic rays (CR). The LAT high-statistics observations of the 7 GeV – 1 TeV electron plus positron spectrum and limits on spatial anisotropy constrain models for this cosmic-ray component. On a galactic scale, the LAT observations indicate that cosmic-ray sources may be more plentiful in the outer Galaxy than expected or that the scale height of the cosmic-ray diffusive halo is larger than conventional models. Production of cosmic rays in supernova remnants (SNR) is supported by the LAT γ-ray studies of several of these, both young SNR and those interacting with molecular clouds.
|Autori:||D.J. Thompson; BALDINI L; Y. Uchiyama|
|Titolo:||Cosmic ray studies with the Fermi Gamma-ray Space Telescope Large Area Telescope|
|Anno del prodotto:||2012|
|Digital Object Identifier (DOI):||10.1016/j.astropartphys.2011.10.009|
|Appare nelle tipologie:||1.1 Articolo in rivista|