12-23 July 2021
Online
Europe/Berlin timezone

Constraining the origin of UHECRs and astrophysical neutrinos

13 Jul 2021, 12:00
1h 30m
03

03

Talk MM | Multi-Messenger Discussion

Speaker

Marco Muzio (New York University)

Description

We constrain properties of ultrahigh energy cosmic ray source environments (and potentially astrophysical neutrino sources), including their photon temperature, gas density, size, magnetic field strength and coherence length, using UHECR and neutrino spectra and composition. Our analysis represents a new type of information on UHECR sources, independent of the mechanism responsible for the UHECR acceleration. We also explore the possibility of a common origin of UHECRs and astrophysical neutrinos and further constrain sources which are consistent with this possibility. We show that the common origin hypothesis can only be satisfied for certain hadronic interaction models, showing that multimessenger analyses have the power to also constrain hadronic physics beyond LHC energies.

Keywords

Ultrahigh energy cosmic rays; astrophysical neutrinos; multimessenger astrophysics; cosmic ray sources

Subcategory Theoretical Results

Primary author

Marco Muzio (New York University)

Co-authors

Glennys Farrar (New York University) Michael Unger

Presentation Materials

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