Open Questions in Cosmic-Ray Research at Ultrahigh Energies - INSPIRE

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Open Questions in Cosmic-Ray Research at Ultrahigh Energies

Rafael Alves Batista
(
- Sao Paulo, Inst. Astron. Geofis.
)
,
Jonathan Biteau
(
- Orsay, IPN
)
,
Mauricio Bustamante
(
- Bohr Inst. and
- DARK Cosmology Ctr.
)
,
Klaus Dolag
(
- Munich U. and
- Garching, Max Planck Inst.
)
,
Ralph Engel
(
- KIT, Karlsruhe
)

Mar 15, 2019

48 pages

Published in:

Front.Astron.Space Sci. 6 (2019) 23

Published: Mar 21, 2019

e-Print:

1903.06714 [astro-ph.HE]

DOI:

10.3389/fspas.2019.00023

View in:

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Abstract: (Frontiers)

We review open questions and prospects for progress in ultrahigh-energy cosmicray (UHECR) research, based on a series of discussions that took place during the “The High-Energy Universe: Gamma-Ray, Neutrino, and Cosmic-ray Astronomy” MIAPP workshop in 2018.Specifically, we overview open questions on the origin of the bulk of UHECRs, the UHECR mass composition, the origin of the end of the cosmic-ray spectrum, the transition from Galactic to extragalactic cosmic-rays, the effect of magnetic fields on thetrajectories of UHECRs, anisotropy expectations for specific astrophysical scenarios, hadronicinteractions, and prospects for discovering neutral particles as well as new physics at ultrahighenergies. We also briefly overview upcoming and proposed UHECR experiments and discusstheir projected science reach.

Note:

47 pages, 17 figures, Review to appear in "Frontiers in Astronomy and Space Science" special issue, "Multi-Messenger Astrophysics: New Windows to the Universe"

Ultrahigh energy cosmic rays
ultrahigh energy neutrinos
extrensive-air-shower detectors
Intergalactic magnetic field
Mass composition of cosmic rays
hadronic interactions at ultrahigh energies
ultrahigh-energy-cosmic-ray anisotropy
cosmic radiation: UHE
cosmic radiation: spectrum
magnetic field: effect

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Figures(23)

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