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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Stellar Collapse <strong>and</strong> Supernova Explosion<br />
Newborn Neutron Star<br />
~ 50 km<br />
Neutr<strong>in</strong>o<br />
Cool<strong>in</strong>g<br />
Proto-Neutron Proto Neutron Star<br />
ρ ≈ ρnuc nuc = 3 × 10 14 g cm −3<br />
T ≈ 30 MeV<br />
Gravitational b<strong>in</strong>d<strong>in</strong>g energy<br />
Eb ≈ 3 × 10<br />
10 53 erg<br />
erg ≈ 17% M SUN<br />
SUN c 2<br />
This shows up as<br />
99% <strong>Neutr<strong>in</strong>os</strong><br />
1% K<strong>in</strong>etic energy of explosion<br />
(1% of this <strong>in</strong>to cosmic rays)<br />
0.01% Photons, outsh<strong>in</strong>e host galaxy<br />
Neutr<strong>in</strong>o lum<strong>in</strong>osity<br />
Lν ≈ 3 × 10 53 erg / 3 sec<br />
≈ 3 × 10 19<br />
19 LSUN SUN<br />
While it lasts, outsh<strong>in</strong>es the entire<br />
visible universe<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
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