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Diffuse Neutrinos and Gamma-rays from Galaxy and Cluster Mergers

Speaker Prof. Peter Meszaros
Affiliation Department of Astronomy & Astrophysics, Pennsylvania State University
Date December 11, 2018 (Tuesday)
Time 11:00 a.m.
Venue Room 522, 5/F, Chong Yuet Ming Physics Building, HKU

Abstract

I review the recent observations of the diffuse neutrino background obtained by the IceCube Antarctic Cherenkov detector, and the data on the diffuse gamma-ray background obtained by the Fermi satellite. The process of large scale structure formation in the Universe involves continued mergers of galaxies and clusters of galaxies, resulting in shocks where particle acceleration can lead to both neutrinos and gammas, and I discuss how these can contribute a significant fraction of the observed backgrounds.

Coffee and tea will be served 20 minutes prior to the seminar.

Anyone interested is welcome to attend.