Neutrino Signal of Electron-Capture Supernovae from Core Collapse to Cooling

Details Neutrino Signal of Electron-Capture Supernovae from Core Collapse to Cooling Neutrino Signal of Electron-Capture Supernovae from Core Collapse to Cooling

2009-12-01

arxiv.org/abs/0912.0260v3

Phys.Rev.Lett.104:251101,2010; Erratum-ibid.105:249901,2010

Astronomy and Astrophysics

Astrophysics

Solar and Stellar Astrophysics

4 pages, 4 eps figures; published as Physical Review Letters, vol. 104, Issue 25, id. 251101

Scientific paper

10.1103/PhysRevLett.104.251101 1

An 8.8 solar mass electron-capture supernova (SN) was simulated in spherical symmetry consistently from collapse through explosion to nearly complete deleptonization of the forming neutron star. The evolution time of about 9 s is short because of nucleon-nucleon correlations in the neutrino opacities. After a brief phase of accretion-enhanced luminosities (~200 ms), luminosity equipartition among all species becomes almost perfect and the spectra of electron antineutrinos and muon/tau antineutrinos very similar. We discuss consequences for the neutrino-driven wind as a nucleosynthesis site and for flavor oscillations of SN neutrinos.

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