Top-Down Models and UHECRs - rencontres de blois
Top-Down Models and UHECRs - rencontres de blois
Top-Down Models and UHECRs - rencontres de blois
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Status of topological <strong>de</strong>fect mo<strong>de</strong>ls – necklaces:<br />
1e+27<br />
E 3 J(E)/m −2 s −1 eV 2<br />
1e+26<br />
1e+25<br />
1e+24<br />
1e+23<br />
ν<br />
p<br />
γ<br />
p+γ<br />
1e+22<br />
1e+18 1e+19 1e+20 1e+21 1e+22<br />
E/eV<br />
⇒ shape of spectrum allows only sub-dominant contribution<br />
• UHE photon fraction reduced<br />
Rencontres <strong>de</strong> Blois 2008 Michael Kachelrieß <strong>Top</strong>-<strong>Down</strong> <strong>Mo<strong>de</strong>ls</strong>