Neutrinos in Astrophysics and Cosmology - INFN Sezione di Ferrara
Neutrinos in Astrophysics and Cosmology - INFN Sezione di Ferrara
Neutrinos in Astrophysics and Cosmology - INFN Sezione di Ferrara
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Neutr<strong>in</strong>o Free Stream<strong>in</strong>g – Transfer Function<br />
Power suppression for λFS FS ≲ 100 Mpc/h<br />
Σm ν<br />
Σm ν<br />
Σm ν<br />
Hannestad, Hannestad,<br />
<strong>Neutr<strong>in</strong>os</strong> <strong>in</strong> <strong>Cosmology</strong>, hep-ph/0404239<br />
hep ph/0404239<br />
Transfer function<br />
P(k) P(k)<br />
= T(k) T(k)<br />
P 0 (k)<br />
Effect of neutr<strong>in</strong>o free<br />
stream<strong>in</strong>g on small scales<br />
T(k) T(k)<br />
≈ 1 − 8Ων /ΩM M<br />
valid for<br />
8Ων /ΩM M ≪ 1<br />
Georg Raffelt, Max-Planck-Institut für Physik, München, Germany IDAPP 2d Meet<strong>in</strong>g, 12-13 May 2006, <strong>Ferrara</strong>, Italy<br />
= 0<br />
= 0.3 eV<br />
= 1 eV
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