Using spherical wavelets to search for magnetically-induced alignment in the arrival directions of ultra-high energy cosmic rays

Autor(es)

Zimbres, M. ^[1] ; Batista, R. Alves ^[2] ; Kemp, E. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Inst Fis Gleb Wataghin, BR-13083859 Campinas, SP - Brazil

^[2] Univ Hamburg, Inst Theoret Phys 2, D-22761 Hamburg - Germany

• Tipo de documento: Artigo Científico
• Fonte: Astroparticle Physics; v. 54, p. 54-60, FEB 2014.
• Citações Web of Science: 5

Resumo

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. (C) 2013 Elsevier B.V. All rights reserved. (AU)

• Processo FAPESP: 10/04743-0 - Utilização de multipletos para estudos do campo magnético galáctico
• Beneficiário: Rafael Alves Batista
• Modalidade de apoio: Bolsas no Brasil - Mestrado
• Processo FAPESP: 08/04259-0 - Raios cósmicos de altas energias
• Beneficiário: Luiz Vitor de Souza Filho
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores
• Processo FAPESP: 10/07359-6 - Estudo dos raios cósmicos de mais altas energias com o Observatório Pierre Auger
• Beneficiário: Carola Dobrigkeit Chinellato
• Modalidade de apoio: Auxílio à Pesquisa - Temático