14–24 Jul 2025
CICG - International Conference Centre - Geneva, Switzerland
Europe/Zurich timezone
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Updated Limits on Anisotropy in Electron+Positron Cosmic Rays from CALET Data

21 Jul 2025, 17:20
15m
Room B

Room B

Talk Cosmic-Ray Direct & Acceleration CRD

Speaker

Holger Motz (Waseda University)

Description

The ISS-based Calorimetric Electron Telescope (CALET) is directly measuring the energy spectrum and direction distribution of electron+positron cosmic-rays up to 20 TeV. The electron+positron events measured by CALET have been analyzed for a possible dipole anisotropy, which could be a signature of nearby SNR such as Vela.
The methods used to derive limits on the anisotropy from the reconstructed events are explained, including the procedures to compensate for non-uniform sky exposure and inhomogeneous detector acceptance. Upper limits on the dipole moment as a function of lower threshold energy, with doubled statistics compared to previously shown results, are presented.

Collaboration(s) CALET

Author

Holger Motz (Waseda University)

Co-author

Yosui Akaike (Waseda University)

Presentation materials

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