Jul 12 – 23, 2021
Europe/Berlin timezone

Observation of Cosmic Ray Anisotropy with Nine Years of IceCube Data

Jul 15, 2021, 12:00 PM
1h 30m


Talk CRI | Cosmic Ray Indirect Discussion


Frank McNally (Mercer University)


The complete IceCube Observatory has collected over 577 billion cosmic-ray induced muon events from May 2011 to May 2020. We used this data set to provide an unprecedented statistically accurate map of the cosmic ray arrival direction distribution in the TeV-PeV energy range scale in the southern hemisphere. Such an increase in event statistics makes it possible to extend the sensitivity to higher cosmic ray energies and smaller angular scales. It will also facilitate a more detailed assessment of the observatory stability over both short- and long-time scales. This will enable us to study the time variability of the cosmic ray anisotropy on a yearly-base and over the entire data sample period covering most of the solar cycle 24. We present the preliminary results from the study with the extended event sample.


anisotropy; time variability

Subcategory Experimental Results
Collaboration IceCube

Primary author


Rasha Abbasi (Loyola University Chicago-Physics Department) Paolo Desiati (University of Wisconsin - Madison) Juan Carlos Díaz Vélez (University of Wisconsin - Madison) Frank McNally (Mercer University) Tim Aguado (Loyola University Chicago) Katherine Gruchot (Loyola University Chicago) Andrew Moy (Loyola University Chicago) Alexander Simmons (Mercer University) Andrew Thorpe (Mercer University) Hannah Woodward (University of Virginia)

Presentation materials