6-13 March 2010
La Thuile
Europe/Paris timezone

Axions and the transparency of the Universe

12 Mar 2010, 18:50
15m
La Thuile

La Thuile

Rencontres de Moriond Planibel Hotel - La Thuile Aosta Valley 11016 La Thuile (Aosta), Italy Phone : 39 (0)1 65 88 45 41 Fax : 39 (0)1 65 88 45 35

Speaker

Dr Malcolm Fairbairn (King's College London)

Description

The propagation of high energy photons across the Universe is hindered by various radiation fields with which they interact. In this talk we will explain how the presence of an axion like particle can change this propagation and make the Universe more transparent. This results in high energy photons making it across cosmic gulfs we would normally not expect them to be able to traverse. We will review the observational situation and the uncertainties inherent in our lack of knowledge of the intergalactic radiation fields and indeed the magnetic field of the Milky Way.

Primary author

Dr Malcolm Fairbairn (King's College London)

Presentation Materials

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