The role of neutrinos in core collapse Supernova explosion - LUTh ...

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AGILE-BOLTZTRAN AGILE-BOLTZTRAN: 1D GR ν radiation hydrodynamics parallelized code AGILE implicit GR hydrodynamics code adaptive grid technique (103 zones) BOLTZTRAN implicit 3 flavours, multigroup GR Boltzmann ν transport solver 20 energy bins (3MeV ≤ Eν ≤ 300MeV) 8 ν directions actually, only 2 independent flavours (µ = τ) Lattimer-Swesty EOS several progenitor models tested Liebendorfer et al. 2000,2001,2004,2005 and references therein Neutrinos in core collapse SN explosion - Paris, 10 September 2009 – p. 14/48
Problem formulation symmetry: General Relativity (GR) + spherical symmetry (1D) coordinates: (t, a, θ, φ) ds 2 = −α 2 dt 2 ′ r + Γ 2 da 2 +r 2 dΩ 2 a enclosed rest mass r = r(t, a) radial radius r ′ = dr da α = α(t, a) lapse function reference frame: comoving reference frame (Lagrangian) u = ˙r/a comoving observer 4-velocity gravitational field source: fluid + neutrino stress-energy tensor (fluid = baryons + γ + electrons & positrons ) T tt = ρ(1 + e + J) T ta = H T aa = p + ρK T θθ = T φφ = p + 1 2ρ(J − K) ρ rest mass density e specific internal energy J specific ν energy p isotropic fluid pressure H and K specific ν stresses Neutrinos in core collapse SN explosion - Paris, 10 September 2009 – p. 15/48
Page 1 and 2: The role of neutrinos in core colla
Page 3 and 4: Introduction: core collapse Superno
Page 5 and 6: SNe history Before telescope introd
Page 11 and 12: Core collapse SN: energetics SN ene
Page 13 and 14: Neutrino-matter interaction Neutrin
Page 15 and 16: Neutrino-matter interaction Neutrin
Page 17 and 18: Electron neutrinos reactions Reacti
Page 19 and 20: Raffelt (2001) Expected neutrinos b
Page 21: Core collapse SN simulations CCSN i
Page 25 and 26: C[f] = j(1 − f) − χf + + X »
Page 27 and 28: C[f] = j(1 − f) − χf + + X »
Page 29 and 30: C[f] = j(1 − f) − χf + + X »
Page 31 and 32: Results: "cold" collapse phase homo
Page 37 and 38: Results: 100ms after bounce Mprog =
Page 39 and 40: Results:ν luminosity after bounce
Page 41 and 42: Neutrino transport: approximation m
Page 43 and 44: Present state-of-art Axisymmetric (
Page 45 and 46: 2D ν transport approximations ray
Page 47 and 48: 2D ν transport approximations ray
Page 49 and 50: 2D simulations results: new feature
Page 51 and 52: 2D simulations results: comparison
Page 61 and 62: IDSA: motivations IDSA = Isotropic
Page 63 and 64: f → D[f] = C[f] IDSA: basic ideas
Page 65 and 66: IDSA: basic ideas f → D[f] = C[f]
Page 67 and 68: dY/dE [MeV −1 ] dY/dE [MeV −1 ]
Page 69 and 70: Leakage scheme: motivations Present
Page 71 and 72: Leakage scheme: basic idea Transpar
Page 73 and 74:
Leakage scheme: testing µ and τ c
Page 75 and 76:
Leakage scheme: testing µ and τ c
Page 77 and 78:
Work in progress @ unibas . . . ELE
Page 79 and 80:
Conclusions Core collapse SN is a v
Page 81 and 82:
Neutrinos in core collapse SN explo
Page 83 and 84:
Core collapse SN in a nutshell I Co
Page 85 and 86:
Core collapse SN in a nutshell I Co
Page 87 and 88:
Simulation building blocks Computat
Page 89 and 90:
ILE-BOLTZTRAN fundamental equatio E
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