A relook at the GZK Neutrino-Photon Connection: Impact of Extra-galactic Radio Background & UHECR properties ...
arXiv, 2023
academicJournal
Zugriff:
Ultra-high energy cosmic rays (UHECRs) beyond the Greisen-Zatsepin-Kuzmin (GZK) cut-off provide us with a unique opportunity to understand the universe at extreme energies. Secondary GZK photons and GZK neutrinos associated with the same interaction are indeed interconnected and render access to multi-messenger analysis of UHECRs. The GZK photon flux is heavily attenuated due to the interaction with Cosmic Microwave Background (CMB) and the Extra-galactic Radio Background (ERB). The present estimate of the ERB comprising of several model uncertainties together with the ARCADE2 radio results in large propagation uncertainties in the GZK photon flux. On the other hand, the weakly interacting GZK neutrino flux is unaffected by these propagation effects. In this work, we make an updated estimate of the GZK photon and GZK neutrino fluxes considering a wide variation of both the production and propagation properties of the UHECR like, the spectral index, the cut-off energy of the primary spectrum, the distribution ... : Accepted for publication in JCAP ...
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A relook at the GZK Neutrino-Photon Connection: Impact of Extra-galactic Radio Background & UHECR properties ...
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Autor/in / Beteiligte Person: | Chakraborty, Sovan ; Mehta, Poonam ; Sarmah, Prantik |
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Veröffentlichung: | arXiv, 2023 |
Medientyp: | academicJournal |
DOI: | 10.48550/arxiv.2307.15667 |
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