Results 61 to 70 of about 42,851 (177)
Experimental study of the microwave emission from electrons in air
, 2014 We searched for the emission of microwave radiation in the Ku band generated by a 95 keV electron beam in air. We unequivocally detected the radiation, and measured its yield and angular dependence. Both the emitted power and its angular pattern are well
Collazuol, G., Conti, E., Sartori, G.
core +1 more source
Exploring the Frontiers of Cosmic-Ray Physics: Perspectives on GRANDProto300 and the GRAND Project
The Astrophysical JournalThe Giant Radio Array for Neutrino Detection (GRAND) is an envisioned large-scale radio array designed to detect ultrahigh-energy cosmic rays (UHECRs, E > 100 PeV) and neutrinos.
Kewen Zhang, Yi Zhang, Yi-Qing Guo
doaj +1 more source
Modified Temperature–Redshift Relation and Ultra-high-energy Cosmic Ray Propagation
The Astrophysical JournalWe reexamine the interactions of ultra-high-energy cosmic rays (UHECRs) with photons from the cosmic microwave background (CMB) under a changed, locally nonlinear temperature–redshift relation T ( z ).
Janning Meinert +5 more
doaj +1 more source
Ultra-high-energy Cosmic-Ray Sources Can Be Gamma-Ray Dim
The Astrophysical Journal LettersUltra-high-energy cosmic rays (UHECRs), accelerated hadrons that can exceed energies of 10 ^20 eV, are the highest-energy particles ever observed. While the sources producing UHECRs are still unknown, the Pierre Auger Observatory has detected a large ...
Angelina Sherman +3 more
doaj +1 more source
Beyond the Local Void: A Data-driven Search for the Origins of the Amaterasu Particle
The Astrophysical JournalWe introduce a simulation-based inference framework to constrain the origins of individual ultra-high-energy cosmic rays by combining realistic three-dimensional propagation modeling with Bayesian parameter estimation.
Nadine Bourriche, Francesca Capel
doaj +1 more source
Multi-messenger aspects of cosmic neutrinos*
EPJ Web of Conferences, 2016 The recent observation of TeV-PeV neutrinos by IceCube has opened a new window to the high-energy Universe. I will discuss this signal in the context of multi-messenger astronomy.
Ahlers Markus
doaj +1 more source
, 2011 Ultra-high cosmic rays (UHECRs) with energies >10^19 eV emitted at cosmological distances will be attenuated by cosmic microwave and infrared background radiation through photohadronic processes.
Cavallo +20 more
core +1 more source
A Heavy-metal Scenario of Ultra-high-energy Cosmic Rays
The Astrophysical Journal LettersThe mass composition of ultra-high-energy cosmic rays is an open problem in astroparticle physics. It is usually inferred from the depth of the shower maximum ( X _max ) of cosmic-ray showers, which is only ambiguously determined by modern hadronic ...
Jakub Vícha +4 more
doaj +1 more source
Cosmic-Ray Constraints on the Flux of Ultrahigh-energy Neutrino Event KM3-230213A
The Astrophysical JournalThe detection of a ≃220 PeV muon neutrino event by the KM3NeT telescope offers an unprecedented opportunity to probe the Universe at extreme energies.
Saikat Das +3 more
doaj +1 more source
The Astrophysical JournalThe detection of high-energy astrophysical multimessengers establishes a connection between ultra-high-energy cosmic rays (UHECRs) and powerful cosmic accelerators.
Rodrigo Sasse +4 more
doaj +1 more source