Regresar

New estimation of the spectral index of high-energy cosmic rays as determined by the Compton-Getting anisotropy

Abstract:

The amplitude of the Compton-Getting (CG) anisotropy contains the power-law index of the cosmic-ray energy spectrum. Based on this relation and using the Tibet air shower array data, we measure the cosmic-ray spectral index to be–3.03±0.55 stat±< 0.62 syst between 6 and 40 TeV, consistent with–2.7 from direct energy spectrum measurements. Potentially, this CG anisotropy analysis can be utilized to confirm the astrophysical origin of the “knee” against models for nonstandard hadronic interactions in the atmosphere.

Año de publicación:

2007

Keywords:

    Fuente:

    googlegoogle

    Tipo de documento:

    Other

    Estado:

    Acceso abierto

    Áreas de conocimiento:

    • Rayo cósmico

    Áreas temáticas:

    • Física moderna
    • Astronomía y ciencias afines
    • Cuerpos y fenómenos celestes específicos

    Contribuidores:

    TK SakoTK Sako