Conference item
Extragalactic sources and propagation of UHECRs
- Abstract:
- With the publicly available astrophysical simulation framework for propagating extraterrestrial UHE particles, CRPropa 3, it is now possible to study realistic UHECR source scenarios including deflections in Galactic and extragalactic magnetic fields in an efficient way. Here we discuss three recent studies that have already been done in that direction. The first one investigates what can be expected in the case of maximum allowed intergalactic magnetic fields. Here is shown that, even if voids contain strong magnetic fields, deflections of protons with energies ≳60 EeV from nearby sources might be small enough to allow for UHECR astronomy. The second study looks into several scenarios with a smaller magnetization focusing on large-scale anisotropies. Here is shown that the local source distribution can have a more significant effect on the large-scale anisotropy than the EGMF model. A significant dipole component could, for instance, be explained by a dominant source within 5 Mpc distance. The third study looks into whether UHECRs can come from local radio galaxies. If this is the case it is difficult to reproduce the observed low level of anisotropy. Therefore is concluded that the magnetic field strength in voids in the EGMF model used here is too low and/or there are additional sources of UHECRs that were not taken into account in these simulations.
- Publication status:
- Published
- Peer review status:
- Peer reviewed
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- Publisher copy:
- 10.7566/jpscp.19.011022
Authors
- Publisher:
- Physical Society of Japan
- Article number:
- 011022
- Series:
- JPS Conference Proceedings
- Series number:
- 19
- Publication date:
- 2018-01-18
- Acceptance date:
- 2016-11-10
- Event title:
- International Conference on Ultra-High Energy Cosmic Rays (UHECR2016)
- Event location:
- Kyoto, Japan
- Event website:
- https://indico.cern.ch/event/504078/
- Event start date:
- 2016-10-11
- Event end date:
- 2016-10-14
- DOI:
- Language:
-
English
- Keywords:
- Pubs id:
-
896850
- Local pid:
-
pubs:896850
- Deposit date:
-
2021-08-04
- ARK identifier:
Terms of use
- Copyright holder:
- van Vliet et al.
- Copyright date:
- 2018
- Rights statement:
- © 2018 The Author(s). This article is available under the terms of the Creative Commons Attribution 4.0 License. Any further distribution of this work must maintain attribution to the author(s) and the title of the article, journal citation, and DOI.
- Notes:
- This paper was presented at the International Conference on Ultra-High Energy Cosmic Rays (UHECR2016), 11-14 October 2016, Kyoto, Japan.
- Licence:
- CC Attribution (CC BY)
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