Zoekopdracht:
journal id: "astronomyxandxastrophysics"
| Auteurs | P. Achard, . et al, S.V. Baldew, G.J. Bobbink, M. Dierckxsens, P. de Jong, A.C. König, F.L. Linde, A.J.M. Muijs, B. Petersen, C. Timmermans | | Titel | Study of the solar anisotropy of cosmic ray primaries of about 200 GeV energy with the L3+C muon detector |
| Tijdschrift | Astronomy and Astrophysics |
| Jaargang | 488 |
| Jaar | 2008 |
| Nummer | 3 |
| Pagina's | 1093-1100 |
| ISSN | 00046361 |
| Faculteit | Faculteit der Natuurwetenschappen, Wiskunde en Informatica |
| Instituut/afd. | FNWI: Institute for High Energy Physics (IHEF) |
| Samenvatting | Context. Primary cosmic rays experience multiple deflections in the non-uniform galactic and heliospheric magnetic fields which may generate anisotropies.
Aims. A study of anisotropies in the energy range between 100 and 500 GeV is performed. This energy range is not yet well explored.
Methods. The L3 detector at the CERN electron-positron collider, LEP, is used for a study of the angular distribution of atmospheric muons with energies above 20 GeV. This distribution is used to investigate the isotropy of the time-dependent intensity of the primary cosmic-ray flux with a Fourier analysis.
Results. A small deviation from isotropy at energies around 200 GeV is observed for the second harmonics at the solar frequency. No sidereal anisotropy is found at a level above 10(-4). The measurements were performed in the years 1999 and 2000. |
| Soort document | Artikel |
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