7-11 July 2014
Africa/Johannesburg timezone
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Re-evaluation of the cosmic-ray parameters

Presented by Mr. Moshe Godfrey MOSOTHO on 8 Jul 2014 from 14:00 to 14:20
Type: Oral Presentation
Session: Space
Track: Track D2 - Space Science

Abstract

The modulation of galactic cosmic rays at Earth can be calculated using approximate solutions of the Parker Transport equation, as described by the modulation potential φ. Usoskin et al. (2005) calculated φ for a given interstellar spectrum (LIS), by using the force field solution and neutron monitor data since 1951. In reconstructing the cosmic-ray intensity in the distant past, McCracken and Beer (2007) used these modulation potential as well as 10Be data and ionization chambers data and neutron monitor data. In this project we re-evaluate these modulation parameters using updated atmospheric yield functions, as well as the most recent estimates of the LIS derived from Voyager observations.

Award

Yes

Level

Msc

Supervisor

Dr. Helena Kruger

Paper

No

Place

Room: D Les 204


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