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

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Neutrino-matter interaction Neutrinos interact significantly by charged (CC) or neutral (NC) current reactions with matter at high ρ and T Major consequences: opacity κ ∼ 5 × 10 −20 Eν MeV energy exchange particle number variation 2 cm 2 g −1 ⇒ 0 τν 10 3 for Eν ≈ 20MeV Neutrinos in core collapse SN explosion - Paris, 10 September 2009 – p. 8/48
Electron neutrinos reactions Reaction Current Important for . . . e − + p ↔ n + νe CC νe production, opacity and energy exchange e + + n ↔ p + ¯νe CC ¯νe production, opacity and energy exchange e − + A ↔ A ′ + νe CC νe production, opacity and energy exchange ν + N → ν ′ + N ′ NC opacity ν + A → ν ′ + A ′ NC opacity ν + e ± → ν ′ + e ±′ CC&NC energy exchange e + + e − ↔ νe + ¯νe CC&NC ν production N + N ↔ N ′ + N ′ + νe + ¯νe NC secondary importance N + N + ν → N ′ + N ′ + ν ′ NC secondary importance ν stands for both νe and ¯νe Bruenn 1985, Hannestad & Raffelt 1998, Buras et al. 2002, Marek et al. 2005, Buras et al. 2006 Neutrinos in core collapse SN explosion - Paris, 10 September 2009 – p. 9/48
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: Neutrino-matter interaction Neutrin
Page 19 and 20: Raffelt (2001) Expected neutrinos b
Page 21 and 22: Core collapse SN simulations CCSN i
Page 23 and 24: Problem formulation symmetry: Gener
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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