Abstract Details

Name: Gajanan Dnyaneshwar Harale
Affiliation: SP Pune University
Conference ID: ASI2015_757
Title : Forming galaxy clusters are the major source of cosmic neutrinos and ultra high energy particles
Authors and Co-Authors : Surajit Paul (Department of Physics, SP Pune University) Luigi Iapichino (Leibniz-Rechenzentrum, Garching, Germany) and Karl Mannheim (Lehrstuhl fÃ¼r Astronomie, UniversitÃ¤t WÃ¼rzburg)
Abstract Type : Poster
Abstract Category : General Relativity and Cosmology
Abstract : Recent findings show an isotropic distribution of neutrinos on the observed sky, which indicates its extragalactic origin. Galaxy clusters being the most massive and energetic object, are an obvious test bed for the studies of Ultra High Energy (UHE) particle origin search. We thus investigate the role of stricture formation shocks in forming galaxy clusters as the mechanism for accelerating particles to such an ultra high energy. Our calculation shows that the galaxy cluster collisions can accelerate particles to an energy higher than 10^19 eV with a very steep spectral index > 2. These Cosmic Rays then losses energy via hadronuclear interactions and produces gamma rays and neutrinos as by product. This study of ours also reveals that such systems can be a source of more than 20% of the total neutrino background emission and UHE particles detected.