Sensitivity of a search for cosmic ray sources including magnetic field effects

14th International Conference on Topics in Astroparticle and Underground Physics

物理学;天文学

Erdmann, Martin^1 ; Müller, Gero^1 ; Urban, Martin^1

RWTH Aachen University, Physics Institute 3A, Germany^1

关键词: Arrival direction;    Cosmic particles;    Cosmic ray sources;    Directional characteristic;    Extragalactic sources;    Galactic magnetic fields;    Ultra high-energy cosmic rays;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/718/5/052042/pdf
DOI  :  10.1088/1742-6596/718/5/052042

学科分类：天文学(综合)

来源: IOP

【 摘 要 】

We analyze the sensitivity of a new method investigating correlations between ultra-high energy cosmic rays and extragalactic sources taking into account deflections in the galactic magnetic field. In comparisons of expected and simulated arrival directions of cosmic rays we evaluate the directional characteristics and magnitude of the field. We show that our method is capable of detecting an anisotropy in data sets with a low signal fraction. It also reveals directions with increased probability for sources of cosmic rays, and therefore opens new possibilities for investigating cosmic particle origin and acceleration.