Limits on the Isotropic Diffuse Flux of Ultrahigh Energy Gamma-Radiation

Abstract

Diffuse ultrahigh energy gamma-radiation can arise from a variety of astrophysical sources, including the interaction of extremely high energy cosmic rays with the 3K microwave background radiation or the collapse of topological defects created in the early Universe. We describe a sensitive search for diffuse gamma-rays at ultrahigh energies using the CASA-MIA experiment. An isotropic flux of radiation is not detected, and we place stringent upper limits on the fraction of the gamma-ray component relative to cosmic rays (less than one part in 10,000) at energies from 570 TeV to 55,000 TeV. This result represents the first comprehensive constraint on the gamma-ray flux at these energies.

9 LaTeX pages, 2 PostScript figures, uses psfig.sty submitted to Phys. Rev. Lett

Cited by in corpus (59)

• Origin and Propagation of Extremely High Energy Cosmic Rays
• Hidden Cosmic-Ray Accelerators as an Origin of TeV-PeV Cosmic Neutrinos
• Cosmic Rays from the Knee to the Highest Energies
• IceTop: The surface component of IceCube
• Dark Matter and Background Light
• Probing the Galactic Origin of the IceCube Excess with Gamma-Rays
• Gamma-ray Constraints on Decaying Dark Matter and Implications for IceCube
• Cosmic Neutrino Pevatrons: A Brand New Pathway to Astronomy, Astrophysics, and Particle Physics
• A Galactic Halo Origin of the Neutrinos Detected by IceCube
• Diffuse Galactic gamma ray flux at very high energy
• IceCube events and decaying dark matter: hints and constraints
• Heavy decaying dark matter and IceCube high energy neutrinos
• Constraining heavy decaying dark matter with the high energy gamma-ray limits
• Gamma-ray bounds from EAS detectors and heavy decaying dark matter constraints
• White Dwarf Pulsars as Possible Cosmic Ray Electron-Positron Factories
• Pinning down the cosmic ray source mechanism with new IceCube data
• KASCADE-Grande Limits on the Isotropic Diffuse Gamma-Ray Flux between 100 TeV and 1 EeV
• Probing heavy dark matter decays with multi-messenger astrophysical data
• A Combined Astrophysical and Dark Matter Interpretation of the IceCube HESE and Throughgoing Muon Events
• Constraining Dark Matter lifetime with a deep gamma-ray survey of the Perseus Galaxy Cluster with MAGIC
• IceCube astrophysical neutrinos without a spectral cutoff and (10^15-10^17) eV cosmic gamma radiation
• Constraints on the models of the origin of high-energy astrophysical neutrinos
• Constraints on heavy decaying dark matter from 570 days of LHAASO observations
• Unresolved sources naturally contribute to PeV $\gamma$-ray diffuse emission observed by Tibet AS$\gamma$
• Search for Galactic PeV Gamma Rays with the IceCube Neutrino Observatory
• Decaying dark matter at IceCube and its signature on High Energy gamma experiments
• Constraints on the flux of $\sim (10^{16}-10^{17.5})$ eV cosmic photons from the EAS-MSU muon data
• Galactic PeV Neutrinos
• Constraints on heavy decaying dark matter with current gamma-ray measurements
• Estimating the contribution of Galactic sources to the diffuse neutrino flux
• Heavy decaying dark matter at future neutrino radio telescopes
• Super heavy dark matter origin of the PeV neutrino event: KM3-230213A
• Searching the Footprint of WIMPZILLAs
• Cosmic ray composition measurements and cosmic ray background free gamma-ray observations with Cherenkov telescopes
• IceCube and HAWC constraints on very-high-energy emission from the Fermi bubbles
• The highest energy neutrinos: first evidence for cosmic origin
• The Diffuse Gamma-Ray Flux from Clusters of Galaxies
• Estimate of the fraction of primary photons in the cosmic-ray flux at energies ~10^17 eV from the EAS-MSU experiment data
• Gamma Rays from Superheavy Relic Particles in the Halo
• High-Energy Galactic Cosmic Rays (Astro2020 Science White Paper)
• High-energy gamma-ray emission from memory-burdened primordial black holes
• A Radio Air-Shower Test Array (RASTA) for IceCube
• Estimates of the cosmic gamma-ray flux at PeV to EeV energies from the EAS-MSU experiment data
• Gamma-ray Production in the Extended Halo of the Galaxy and Possible Implications for the Origin of Galactic Cosmic Rays
• Search for Sources of High Energy Neutrons with Four Years of Data from the IceTop Detector
• Search for a diffuse flux of photons with energies above tens of PeV at the Pierre Auger Observatory
• Large Scale Anisotropy of Cosmic Rays and Directional Neutrino Signals from Galactic Sources
• Astrophysical constraints from synchrotron emission on very massive decaying dark matter
• A Search for Small-Scale Anisotropy of PeV Cosmic Rays
• The End of the Rainbow: What Can We Say About the Extragalactic Sub-Megahertz Radio Sky?
• Region of Excessive Flux of PeV Cosmic Rays in the Direction Toward Pulsars PSR J1840+5640 and LAT PSR J1836+5925
• Report from the Multi-Messenger Working Group at UHECR-2014 Conference
• Search for dark matter using sub-PeV $\mathbf{\gamma }$-rays observed by Tibet AS${}_{\mathbf{\gamma }}$
• Cosmic Ray Physics with the IceCube Observatory
• Upper limits on the isotropic diffuse flux of cosmic PeV photons from Carpet-2 observations
• New limit on high Galactic latitude PeV gamma-ray flux from Tibet AS-gamma data
• Generation of 10^15 - 10^17 eV photons by UHE CR in the Galactic magnetic filed
• Regions of an excessive flux of cosmic rays according to data of the FIAN and MSU arrays
• A search for small and medium scale anisotropy of cosmic rays above 1 PeV registered at the Tunka-133 array