2–6 Dec 2019
Australia/Sydney timezone

A two source population fit to ultrahigh-energy cosmic ray data

3 Dec 2019, 16:50
20m
SNH 4001

SNH 4001

Oral Cosmic rays Parallel

Speaker

Soebur Razzaque (University of Johannesburg)

Description

We fit ultrahigh-energy cosmic ray spectrum and composition data from the Pierre Auger Observatory using two populations of astrophysical sources. One population, accelerating dominantly protons, follows typical cosmological evolution similar to luminous astrophysical sources; while another, mostly nearby, population of astrophysical sources accelerate light-to-heavy nuclei. We compute expected cosmogenic neutrino flux in such a hybrid source population scenario and discuss possibilities to detect these neutrinos by upcoming detectors to shade lights on the sources of ultrahigh-energy cosmic rays.

Primary authors

Mr Saikat Das Soebur Razzaque (University of Johannesburg) Prof. Nayantara Gupta

Presentation materials