35 citations · 87 across the 8 of their papers we have counts for
4 papers · 1 filter
Estimates of multipolar coefficients to search for cosmic ray anisotropies with non-uniform or partial sky coverage
Pierre Billoir, Olivier Deligny
We study the possibility to extract the multipolar moments of an underlying distribution from a set of cosmic rays observed with non-uniform or even partial sky coverage. We show t…
Evaluation of the Primary Energy of UHE Photon-induced Atmospheric Showers from Ground Array Measurements
Pierre Billoir, Cecile Roucelle, Jean-Christophe Hamilton
A photon induced shower at eV exhibits very specific features and is different from a hadronic one. At such energies, the LPM effect delays in average the fir…
A procedure to produce excess, probability and significance maps and to compute point-sources flux upper limits
P. Billoir, A. Letessier-Selvon
A short note to propose a procedure to construct excess maps, probability maps and to calculate point source flux upper limits.
Note on the Origin of the Highest Energy Cosmic Rays
Pierre Billoir, Antoine Letessier-Selvon
In this note we argue that the galactic model chosen by E.-J. Ahn, G. Medina-Tanco, P.L. Bierman and T. Stanev in their paper discussing the origin of the highest energy cosmic ray…