In order to enable an iCal export link, your account needs to have an API key created. This key enables other applications to access data from within Indico even when you are neither using nor logged into the Indico system yourself with the link provided. Once created, you can manage your key at any time by going to 'My Profile' and looking under the tab entitled 'HTTP API'. Further information about HTTP API keys can be found in the Indico documentation.
Additionally to having an API key associated with your account, exporting private event information requires the usage of a persistent signature. This enables API URLs which do not expire after a few minutes so while the setting is active, anyone in possession of the link provided can access the information. Due to this, it is extremely important that you keep these links private and for your use only. If you think someone else may have acquired access to a link using this key in the future, you must immediately create a new key pair on the 'My Profile' page under the 'HTTP API' and update the iCalendar links afterwards.
Permanent link for public information only:
Permanent link for all public and protected information:
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Abstract: When ultra-high-energy cosmic rays (UHECRs) travel through the universe they produce secondary neutrinos as well as photons, electrons and positrons (initiating electromagnetic cascades) in different kinds of interactions. These neutrinos and electromagnetic cascades are detected at Earth as isotropic extragalactic fluxes. We developed a public astrophysical simulation framework for propagating extraterrestrial ultra-high energy particles, CRPropa 3, which is ideally suited for predicting the level of these fluxes. CRPropa includes all relevant UHECR interactions as well as secondary neutrino and electromagnetic cascade production and propagation. Our results show that the expected cosmogenic neutrino and gamma-ray spectra depend strongly on the evolution with redshift of the UHECR sources and on the chemical composition of UHECRs at injection. Pure-proton models with a source evolution corresponding to possible UHECR sources are already strongly constrained by both the neutrino flux measured by IceCube and the extragalactic gamma-ray background measured by Fermi/LAT. On the other hand a model optimised to provide the best fit to the UHECR spectrum and composition measured by the Pierre Auger Collaboration gives significantly less cosmogenic neutrinos and gamma-rays. With a few more years of data neutrino and gamma-ray measurements might be able to rule out all realistic pure-proton models. Furthermore, future neutrino experiments with sensitivities of ~10-8–10-10 GeV cm-2 s-1 sr-1 in the EeV range will be able to constrain the fraction of protons present in UHECRs.