ar X iv : a st ro - p h / 05 09 25 3 v 1 9 Se p 20 05 Galactic cosmic rays and the knee - Results from the KASCADE experiment
نویسندگان
چکیده
Results of the KASCADE air shower experiment investigating the origin of cosmic rays in the energy region from 1013 to 1017 eV are presented. Attention is drawn on the investigation of interactions in the atmosphere and the energy spectrum and mass composition of cosmic rays.
منابع مشابه
ar X iv : a st ro - p h / 05 10 32 1 v 1 1 1 O ct 2 00 5 High - energy Cosmic Rays ⋆
After a brief review of galactic cosmic rays in the GeV to TeV energy range, we describe some current problems of interest for particles of very high energy. Particularly interesting are two features of the spectrum, the knee above 10 eV and the ankle above 10 eV. An important question is whether the highest energy particles are of extra-galactic origin and, if so, at what energy the transition...
متن کاملar X iv : a st ro - p h / 06 08 34 0 v 1 1 6 A ug 2 00 6 RECENT RESULTS FROM KASCADE - GRANDE
1 Abstract KASCADE-Grande is a new extensive air shower experiment co-located to the KASCADE site at Forschungszentrum Karlsruhe. The multi-detector system allows to investigate the energy spectrum, composition , and anisotropies of cosmic rays with unprecedented prevision in the energy range from 10 14-10 18 eV. The primary goals besides investigating the origin of the knee at E ≃ 3 · 10 15 eV...
متن کاملar X iv : a st ro - p h / 03 11 47 8 v 1 2 0 N ov 2 00 3 1 Dissecting the knee — Air shower measurements with KASCADE
Recent results of the KASCADE air shower experiment are presented in order to shed some light on the astrophysics of cosmic rays in the region of the knee in the energy spectrum. The results include investigations of high-energy interactions in the atmosphere, the analysis of the arrival directions of cosmic rays, the determination of the mean logarithmic mass, and the unfolding of energy spect...
متن کاملar X iv : a st ro - p h / 05 01 19 5 v 1 1 1 Ja n 20 05 OUTSTANDING PROBLEMS IN PARTICLE ASTROPHYSICS
The general features of the cosmic-ray spectrum have been known for a long time. Although the basic approaches to understanding cosmic-ray propagation and acceleration have also been well understood for many years, there are several questions of great interest that motivate the current intense experimental activity in the field. If the energy-dependence of the secondary to primary ratio of gala...
متن کاملar X iv : a st ro - p h / 05 01 13 3 v 2 2 7 M ay 2 00 5 1 Ultrahigh energy cosmic rays from collisional annihilation revisited
We re-examine collisional annihilation of superheavy dark matter particles in dark matter density spikes in the galactic halo as a possible source of ultrahigh energy cosmic rays. We estimate the possible flux in a way that does not depend on detailed assumptions about the density profiles of dark matter clumps. The result confirms that collisional annihilation is compatible with annihilation c...
متن کامل