3-11 July 2007
Merida, Mexico
Mexico/General timezone
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HE 1.3.B

Place

Location: Merida, Mexico
Room: Kabah (Holiday Inn)
Date: 7 Jul 09:10 - 10:00

Timetable | Contribution List

Displaying 4 contributions out of 4
Type: Oral Session: HE 1.3.B
Track: HE.1.3.B
Combining diffusion equation solutions with direct Monte-Carlo simulations of charged particle trajectories, the propagation of cosmic rays in the Galaxy is investigated. Different assumptions on the shape of the regular Galactic magnetic fields and source distributions are considered and their influence on cosmic-ray life-times and the energy spectrum obtained at Earth is examined. The or ... More
Presented by Dr. Joerg HOERANDEL on 7/7/2007 at 14:22
Type: Oral Session: HE 1.3.B
Track: HE.1.3.B
We discuss the differences induced by the assumed composition of extragalactic sources on the predicted UHECR spectrum. We show that in the case of an extragalactic mixed composition, the cosmic ray spectrum can be reproduced down to the ankle, which is then interpreted as the end of the transition from galactic to extragalactic cosmic rays. The corresponding Xmax evolution is presented and ... More
Presented by Dr. Denis ALLARD on 7/7/2007 at 14:34
Type: Oral Session: HE 1.3.B
Track: HE.1.3.B
A variety of mdoels for the origin of Extragalactic Cosmic Rays have been examined in an attempt to see whether it is possible to explain the ankle in the spectrum as a property of the EG particles alone. We find that it is not and see no reason to doubt that it marks the cross-over point between Galactic and EG particles.
Presented by Prof. Arnold WOLFENDALE on 7/7/2007 at 14:10
Type: Oral Session: HE 1.3.B
Track: HE.1.3.B
The shapes of cosmic ray trajectories in the Galaxy result from the effect of the chaotic and regular magnetic field, the rates of the nuclear collisions, the gas density and other minor parameters. For a given magnetic field configuration the forms of the trajectories, regardless their lengths, naturally subdivide in rectilinear and highly tortuous, depending on the ion energy. It is show ... More
Presented by Dr. Antonio CODINO on 7/7/2007 at 14:46
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