AugerPrime scintillators and station electronics completed
AugerPrime detector with the SSD and RD atop the WCD.The station electronics is hidden underneath the dome visible on top of the WCD. Operating since 2004, the Pierre Auger Observatory…
Articles produced by the “High-energy astroparticles” group
Article: Multiwavelength analysis of Galactic Supernova Remnants
The photon spectrum of HESS J1731-347 fitted by using the lepto-hadronic model. By P. Sharmaa, Z. Oub, C. Henry-Cadrota, C. Dubosa and T. Suomijärvia aUniversité Paris-Saclay, CNRS/IN2P3, IJCLab, 91405 Orsay,…
Why the night is dark? A 200 years old question.
Publised in The Conversation, "Why the night is dark? A 200 years old question" (French only). Jonathan Biteau (Pôle A2C, équipe APHE) et al.
Article: Observational constraints on cosmic-ray escape from ultra-high-energy accelerators
Energy flux of ultra-high energy cosmic rays at the Earth as a function of energy. The spectrum of all particles and the proton component are represented by black circles and…
Article: Arrival Directions of Cosmic Rays above 32 EeV from Phase One of the Pierre Auger Observatory
Flux map at energies above 40 EeV with a top-hat smoothing radius of 25° in Galactic coordinates. The supergalactic plane is shown as a gray line. The blank area is…
Article: Limits to gauge coupling in the dark sector set by the non-observation of instanton-induced decay of Super-Heavy Dark Matter in the Pierre Auger Observatory data
Upper limits at 95\% C.L. on the effective coupling constant of a hidden gauge interaction as a function of the mass of a dark matter particle X decaying into quark/anti-quark…
Article: Predicted diffuse flux of ultra-high energy photons in the galactic plane; its implications for the search for super-heavy dark matter
Upper limits on diffuse photon fluxes for several energy thresholds, and expected fluxes from UHECRs interactions with the gas distribution in the Galaxy (grey dashed and blue dashed-dotted lines), as…
Review: Gamma-ray Cosmology and Tests of Fundamental Physics
Illustration of gamma-ray propagation from a blazar at luminosity distance d = 1 Gpc (redshift z ~ 0.2) to the Milky Way. The journal Galaxies published on 22 February 2022…
Test Measurements with the CTA-NectarCAM SPE Calibration system
The NectarCAM camera, with its single photoelectron calibration system (white target in the bottom-right corner) At IJCLab, we are involved in producing the Single Photo-Electron (SPE) calibration system for NectarCAM…