TY - JOUR
T1 - Open Questions in Cosmic-Ray Research at Ultrahigh Energies
AU - Alves Batista, Rafael
AU - Biteau, Jonathan
AU - Bustamante, Mauricio
AU - Dolag, Klaus
AU - Engel, Ralph
AU - Fang, Ke
AU - Kampert, Karl Heinz
AU - Kostunin, Dmitriy
AU - Mostafa, Miguel
AU - Murase, Kohta
AU - Oikonomou, Foteini
AU - Olinto, Angela V.
AU - Panasyuk, Mikhail I.
AU - Sigl, Guenter
AU - Taylor, Andrew M.
AU - Unger, Michael
N1 - Publisher Copyright:
© Copyright © 2019 Alves Batista, Biteau, Bustamante, Dolag, Engel, Fang, Kampert, Kostunin, Mostafa, Murase, Oikonomou, Olinto, Panasyuk, Sigl, Taylor and Unger.
PY - 2019/6/4
Y1 - 2019/6/4
N2 - We review open questions and prospects for progress in ultrahigh-energy cosmic ray (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 the trajectories of UHECRs, anisotropy expectations for specific astrophysical scenarios, hadronic interactions, and prospects for discovering neutral particles as well as new physics at ultrahigh energies. We also briefly overview upcoming and proposed UHECR experiments and discuss their projected science reach.
AB - We review open questions and prospects for progress in ultrahigh-energy cosmic ray (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 the trajectories of UHECRs, anisotropy expectations for specific astrophysical scenarios, hadronic interactions, and prospects for discovering neutral particles as well as new physics at ultrahigh energies. We also briefly overview upcoming and proposed UHECR experiments and discuss their projected science reach.
UR - https://www.scopus.com/pages/publications/85077662267
UR - https://www.scopus.com/inward/citedby.url?scp=85077662267&partnerID=8YFLogxK
U2 - 10.3389/fspas.2019.00023
DO - 10.3389/fspas.2019.00023
M3 - Review article
AN - SCOPUS:85077662267
SN - 2296-987X
VL - 6
JO - Frontiers in Astronomy and Space Sciences
JF - Frontiers in Astronomy and Space Sciences
M1 - 23
ER -