Supernova explosions

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Observing the Explosion Mechanism Neutrino and Gravitational Wave Astronomy • Direct “live” information from the supernova engine. • Gravitational Waves: Directly linked to the ubiquitous multi-D dynamics in the postshock region and in the PNS. C. D. Ott @ JIGSAW 2010, TIFR, Mumbai, 2010/02/23 Chandra Primary Observables 36
Gravitational Waves • Einstein equations in linear limit: Inhomogeneous wave equations -> Gravitational Waves. • 2 polarizations: • Emission: GWs are of leading order quadrupole waves. Emitted by accelerated aspherical bulk-mass motions. “Weak-field”, “slow-motion” limit: • GWs are weak and couple weakly to matter. Good: Little absorption/scattering Bad: Very difficult to observe. • Observation: Need to measure rel. displacements < 10 -20 . – Interferometers: LIGOs, LISA – Resonant mass detectors. LIGO Hanford 2 km & 4 km interferometers C. D. Ott @ CASS UCSD 2009/11/18 37
Page 1 and 2: Happy Birthday SN1987A!!! Supernova
Page 3 and 4: Plan of this Talk Introduction and
Page 5 and 6: The Supernova (Simulation) EOS •
Page 7 and 8: Neutron Star Masses (TOV, T=0.1 MeV
Page 9 and 10: The Essence of Core-Collapse Supern
Page 11 and 12: Core-Collapse Supernova Simulations
Page 13 and 14: Core-Collapse Supernova Mechanisms
Page 15 and 16: The Neutrino Mechanism [Wilson 1985
Page 19 and 20: Free Energy of Differential Rotatio
Page 21 and 22: Newtonian Radiation-MHD Simulations
Page 25 and 26: PNS core oscillations, Burrows et a
Page 27 and 28: 2D Angle-Dependent Neutrino Radiati
Page 29 and 30: Postbounce SN Models: • 20-solar
Page 31 and 32: Eddington Tensor Components • In
Page 33 and 34: Shock Radii • S n leads to somewh
Page 35: Observing the Explosion Mechanism S
Page 39 and 40: Gravitational Wave Detection seismi
Page 41 and 42: Blowing up Massive Stars: Core-Coll
Page 47 and 48: GWs from Rotating Collapse & Rotati
Page 49 and 50: Convection/SASI GW Time-Frequency E
Page 51 and 52: PNS Pulsations: GW T-F Evolution s2
Page 53 and 54: Adding Neutrinos to the Mix: (work
Page 55 and 56: Core Collapse Timeline • Energy r
Page 57 and 58: GR1D • GR1D: Open-Source 1.5D GR
Page 59 and 60: There Is No Direct BH Formation!
Page 61 and 62: Comparison with Full Transport Fisc
Page 63 and 64: Precollapse Stellar Structure *O’
Page 65 and 66: Metallicity / Mass Loss 40-solar-ma
Page 67 and 68: Computational Framework Cactus [htt
Page 69 and 70: C. D. Ott @ JIGSAW 2010, TIFR, Mumb
Page 71 and 72: Bonus Slides Faking it: An Ad-Hoc T
Page 73 and 74: Result • Huge increase in instant
Page 75 and 76: Dynamical Impact Next steps: • Ve
Page 77 and 78: Supplemental Slides C. D. Ott @ JIG
Page 79 and 80: Testing the Acoustic Mechanism •
Page 81 and 82: Precollapse Stellar Structure Singl
Page 83 and 84: Precollapse Stellar Structure Singl
Page 85 and 86: Testing GRB Progenitors [Dessart, B

Supernova explosions

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