An upper limit to photons from first data taken by the Pierre Auger Observatory
Astrophysics
2007-05-23 v1
Abstract
Many models for ultra-high energy cosmic rays postulate exotic scenarios to explain the sources or the nature of these particles. A characteristic feature of these models is the prediction of a significant flux of photons at ultra-high energy. The Pierre Auger Observatory offers a great potential to search for such photons. We present shower observables with sensitivity to photons and the search strategy employed. An upper limit to photon primaries is derived from first Auger data. Prospects for constraining theoretical source models are discussed.
Keywords
Cite
@article{arxiv.astro-ph/0701065,
title = {An upper limit to photons from first data taken by the Pierre Auger Observatory},
author = {Markus Risse},
journal= {arXiv preprint arXiv:astro-ph/0701065},
year = {2007}
}
Comments
Invited paper presented at the VI. Rencontres du Vietnam, Hanoi, August 2006; 8 pages, 6 figures