Highest Energy Cosmic Rays and results from the HiRes Experiment

Abstract

The status of the field of ultrahigh energy cosmic rays is summarized, from the point of view of the latest results of the High Resolution Fly's Eye (HiRes) Experiment. HiRes results are presented, and compared with those of the Akeno Giant Air Shower Array (AGASA), plus the Telescope Array and Pierre Auger experiments. The HiRes measurements of the cosmic ray spectrum, and the observation of the GZK cutoff are presented. HiRes results on composition, searches for anisotropy, measurement of the proton-air total cross section, and shapes of shower profiles are presented.

31 pages, 18 figures, submitted to Journal of Physics G

References in corpus (31)

• KASCADE measurements of energy spectra for elemental groups of cosmic rays: Results and open problems
• Detection of a Cosmic Ray with Measured Energy Well Beyond the Expected Spectral Cutoff due to Cosmic Microwave Radiation
• The Supermassive Black Hole at the Galactic Center
• Parton Ladder Splitting and the Rapidity Dependence of Transverse Momentum Spectra in Deuteron-Gold Collisions at RHIC
• Small-scale anisotropy of cosmic rays above 10^19eV observed with the Akeno Giant Air Shower Array
• Parton-Based Gribov-Regge Theory
• Energy determination in the Akeno Giant Air Shower Array experiment
• The Status of the H.E.S.S. Project
• Dip in UHECR spectrum as signature of proton interaction with CMB
• A Study of the Composition of Ultra High Energy Cosmic Rays Using the High Resolution Fly's Eye
• A Multi-Component Measurement of the Cosmic Ray Composition Between 10^{17} eV and 10^{18} eV
• Ultra high energy cosmic rays and the large scale structure of the galactic magnetic field
• The Anisotropy of Cosmic Ray Arrival Directions around 10${}^{18}$eV
• The Anisotropy of Cosmic Ray Arrival Direction around 10^18eV
• Nonlinear Shock Acceleration and Photon Emission in Supernova Remnants
• H.E.S.S. Observations of PKS 2155-304
• On the transition from Galactic to extragalactic cosmic-rays: spectral and composition features from two opposite scenarios
• New measurement on photon yields from air and the application to the energy estimation of primary cosmic rays
• BL Lacertae are probable sources of the observed ultra-high energy cosmic rays
• Search for Cross-Correlations of Ultra--High-Energy Cosmic Rays with BL Lacertae Objects
• Study of Small-Scale Anisotropy of Ultrahigh Energy Cosmic Rays Observed in Stereo by HiRes
• Observation of the Ankle and Evidence for a High-Energy Break in the Cosmic Ray Spectrum
• Evidence for a connection between the gamma-ray and the highest energy cosmic-ray emissions by BL Lacertae objects
• A Measurement of the Average Longitudinal Development Profile of Cosmic Ray Air Showers Between 10^{17}eV and 10^{18}eV
• Comparison of AGASA data with CORSIKA simulation
• Model Dependence of Lateral Distribution Functions of High Energy Cosmic Ray Air Showers
• Search for Point Sources of Ultra-High Energy Cosmic Rays Above 40 EeV Using a Maximum Likelihood Ratio Test
• Measurement of Pressure Dependent Fluorescence Yield of Air: Calibration Factor for UHECR Detectors
• Muon production in extensive air showers and its relation to hadronic interactions
• A Search for Arrival Direction Clustering in the HiRes-I Monocular Data above 10^(19.5) eV
• A Measurement of Time-Averaged Aerosol Optical Depth using Air-Showers Observed in Stereo by HiRes

Cited by in corpus (18)

• The Origin of Galactic Cosmic Rays
• Diffusive propagation of cosmic rays from supernova remnants in the Galaxy. I: spectrum and chemical composition
• Extragalactic propagation of ultrahigh energy cosmic-rays
• Extensive Air Showers and Ultra High-Energy Cosmic Rays: A Historical Review
• Heavy Nuclei Synthesized in Gamma-Ray Burst Outflows as the Source of UHECRs
• On the Possible Association of Ultra High Energy Cosmic Rays with Nearby Active Galaxies
• On Active Galactic Nuclei as Sources of Ultra-High Energy Cosmic Rays
• Intergalactic Magnetic Field and Arrival Direction of Ultra-High-Energy Protons
• Neutrino-heated winds from rotating proto-magnetars
• Origin of very high and ultra high energy cosmic rays
• Recent results in cosmic ray physics and their interpretation
• Study of the PeV Neutrino, $\gamma$-rays and UHECRs around The Lobes of Centaurus A
• On the PeV knee of cosmic rays spectrum and TeV cutoff of electron spectrum
• Abnormal threshold behaviors of photo-pion production off the proton in the GZK region
• Scaling Violation and Inelasticity of Very High Energy Proton-Proton Interactions
• Bilateral constraints on proton Lorentz violation effects
• Results of the further analysis of Tien-Shan array data on the energy spectrum of primary cosmic rays at 2x10${}^{13}$ - 3x10${}^{17}$ eV
• On the Discovery of the GZK Cut-off