Identifying Patterns on Cosmic Ray Maps with Wavelets on the Sphere

TL;DR

This paper applies wavelet transforms on the sphere to detect filamentary multiplet structures in cosmic ray maps, providing insights into cosmic magnetic fields and the sources of ultra-high energy cosmic rays.

Contribution

It introduces a novel wavelet-based method on the sphere to identify energy-ordered filamentary structures in cosmic ray data.

Findings

Detection of multiplet structures in cosmic ray maps.

Potential to infer properties of cosmic magnetic fields.

Enhanced understanding of cosmic ray source spectra.

Abstract

The deflection of ultra-high energy cosmic rays depends on the shape of the injection spectrum of the source and the pervasive cosmic magnetic fields. In this work it is applied the wavelet transform on the sphere to search for energy ordered filamentary structures arisen from magnetic bending. These structures, the so-called multiplets, can bring relevant information concerning the intervening magnetic fields.