July 29, 2015 to August 6, 2015
World Forum
Europe/Amsterdam timezone

Measurement of (p+He)-induced anisotropy in cosmic rays with ARGO-YBJ

Jul 30, 2015, 12:15 PM
World Forum Theater (World Forum)

World Forum Theater

World Forum

Churchillplein 10 2517 JW Den Haag The Netherlands
Oral contribution CR-EX Parallel CR01 Aniso


Roberto Iuppa (Universita e INFN Roma Tor Vergata (IT))


Deviations from isotropy in the cosmic ray arrival direction distribution indicate the laboratory reference frame moving with respect to the cosmic radiation. When data are ordered in sidereal time, any effect is of great importance, as it may trace potential sources of cosmic rays and probe their propagation through magnetic fields. For the same reason, to decipher results implies unfolding effects from source distribution, energy spectrum and mass composition of cosmic rays, as well as magnetic field on regular and turbulent scales. Any efficient selection of cosmic ray mass would have a major impact on this scenario, as parameters related to cosmic rays production site, acceleration and propagation mechanisms would be importantly constrained in terms of rigidity. So far, no experiment managed to implement efficient mass selections and save high statistics at the same time. The ARGO-YBJ experiment (located at the YangBaJing Cosmic Ray Observatory, Tibet, China, 4300 m asl) is the only detector able to select the cosmic ray light (p+He) component with high efficiency in the wide energy range few TeV - 10 PeV. In this contribution a preliminary measurement of the anisotropy for the p+He primary component is reported for the first time.
Registration number following "ICRC2015-I/" 478
Collaboration ARGO-YBJ

Primary author

giuseppe di sciascio (INFN Roma Tor Vergata)


Paolo Montini (INFN Roma Tor Vergata) Roberto Iuppa (Universita e INFN Roma Tor Vergata (IT)) Dr Shuwang Cui (Hebei Normal University, Hebei China) Prof. Stefano Maria Mari (INFN - Sezione Roma Tre)

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