Categories Cosmic Ray Direct Harmonic Interference of Earth's Orbital Velocity and the Sidereal Cosmic Ray Anisotropy

Harmonic Interference of Earth's Orbital Velocity and the Sidereal Cosmic Ray Anisotropy

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  • uploaded June 25, 2021

Discussion timeslot (ZOOM-Meeting): 16. July 2021 - 18:00
ZOOM-Meeting URL: https://icrc2021.desy.de/pf_access_abstracts
Corresponding Session: https://icrc2021-venue.desy.de/channel/Presenter-Forum-1-Evening-All-Categories/48
Abstract:
"When cosmic-ray arrival directions are observed in celestial coordinates, they appear to have a small anisotropy whose origin is still largely unknown. In addition to this celestial anisotropy, the Earth's revolution around the Sun produces a faint Compton-Getting dipole anisotropy with an excess oriented towards the direction of motion in solar coordinates. The relative rotation of the celestial and solar reference frames over a calendar year causes interference between the two sources of anisotropy. It is possible to characterize the resulting yearly modulations by studying the side-bands to the diurnal and sidereal frequencies in anti- and extended-sidereal time frames. This work provides a numerical simulation of the interference between anisotropies in sidereal and solar reference frames to predict the anti-sidereal and extended-sidereal frames' distributions."

Authors: Juan Carlos Díaz Vélez | Rasha Abbasi | Paolo Desiati | Frank McNally
Co-Authors: Hannah Woodward
Indico-ID: 1248
Proceeding URL: https://pos.sissa.it/395/085

Tags:
Categories: Cosmic Ray Direct, Scientific Contributions
Presenter: Juan Carlos Díaz Vélez

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