Speaker
Description
At which energy the transition from Galactic to extra-galactic cosmic rays (CRs) takes place is one of the major unresolved issues of cosmic ray physics. Although the sources of high-energy cosmic rays remain unknown, one expects to identify them by studying the anisotropy in their arrival directions. Recently, the cosmic ray anisotropy measurements in TeV to PeV energy range were updated from IceCube using its nine years of data. Moreover, IceCube-Gen2 is designed to achieve an exposure about 8 times larger than the IceCube area, as well as more statistics. This improvement could allow us to obtain high-quality measurements of cosmic ray air showers, and thus it is capable to investigate the cosmic-ray anisotropy with higher sensitivity.
The sensitivity of IceCube-Gen2 to anisotropy is purely a matter of statistics. Based on the properties of IceCube-Gen2, we build a Monte Carlo toy model for IceCube-Gen2. Taking into account the detector exposure and an anisotropic dipole, we randomly generate the high-energy cosmic ray events of 10 years. In this case, the expected maps will be generated with random events, including the relative intensity maps, significance maps and as angular power spectrum in progress. Additionally, we can determine under what conditions IceCube-Gen2 could achieve the highest sensitivity to observe cosmic ray anisotropy. In this contribution, the current studies on the anisotropy with the simulation data will be discussed.
