Using spherical wavelets to search for magnetically-induced alignment in the arrival directions of ultra-high energy cosmic rays
arXiv:1305.0523 · doi:10.1016/j.astropartphys.2013.11.001
Abstract
Due to the action of the intervening cosmic magnetic fields, ultra-high energy cosmic rays (UHECRs) can be deflected in such a way as to create clustered energy-ordered filamentary structures in the arrival direction of these particles, the so-called multiplets. In this work we propose a new method based on the spherical wavelet transform to identify multiplets in sky maps containing arrival directions of UHECRs. The method is illustrated in simulations with a multiplet embedded in isotropic backgrounds with different numbers of events. The efficiency of the algorithm is assessed through the calculation of Type I and II errors.
8 pages, 8 figures. Matches the published version
References in corpus (24)
- A New Model of the Galactic Magnetic Field
- Radio observational constraints on Galactic 3D-emission models
- Constrained Simulations of the Magnetic Field in the Local Universe and the Propagation of UHECRs
- Deriving global structure of the Galactic Magnetic Field from Faraday Rotation Measures of extragalactic sources
- Indications of Proton-Dominated Cosmic Ray Composition above 1.6 EeV
- Exact reconstruction with directional wavelets on the sphere
- The performance of spherical wavelets to detect non-Gaussianity in the CMB sky
- Ultra-High Energy Cosmic Rays in a Structured and Magnetized Universe
- The toes of the ultra high energy cosmic ray spectrum
- The Mexican Hat Wavelet Family. Application to point source detection in CMB maps
- CRPropa 2.0 -- a Public Framework for Propagating High Energy Nuclei, Secondary Gamma Rays and Neutrinos
- Lensing of ultra-high energy cosmic rays in turbulent magnetic fields
- A high-significance detection of non-Gaussianity in the WMAP 5-year data using directional spherical wavelets
- Propagation of UHE Protons through Magnetized Cosmic Web
- Cosmological applications of a wavelet analysis on the sphere
- Ultrahigh Energy Nuclei Propagation in a Structured, Magnetized Universe
- Probing dark energy with steerable wavelets through correlation of WMAP and NVSS local morphological measures
- Wavelets Applied to CMB Maps: a Multiresolution Analysis for Denoising
- Non-Gaussianity detections in the Bianchi VIIh corrected WMAP 1-year data made with directional spherical wavelets
- Search for signatures of magnetically-induced alignment in the arrival directions measured by the Pierre Auger Observatory
- Source position reconstruction and constraints on the galactic magnetic field from ultra-high energy cosmic rays
- Testing the isotropy of high energy cosmic rays using spherical needlets
- Detecting filaments in the ultra-high energy cosmic ray distribution
- Detection of Point Sources in Cosmic Ray Maps using the Mexican Hat Wavelet Family