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CCAPP Special Seminar: "Revival of the Fittest: Exploding Core-Collapse Supernovae" David Vartanyan (Princeton)

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November 7, 2018
12:30AM - 1:30PM
McPherson 4054

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Add to Calendar 2018-11-07 00:30:00 2018-11-07 13:30:00 CCAPP Special Seminar: "Revival of the Fittest: Exploding Core-Collapse Supernovae" David Vartanyan (Princeton) Fifty years have lapsed since the early simulations of Colgate and White identified neutrino heating as key to powering core-collapse supernovae (CCSNe). Yet, for over half a century, the mechanism for producing a robust CCSN explosion has endured as a scientific mystery. Outcome - explosion or dud - depends sensitively on the progenitor structure, the neutrino-matter microphysics, and macrophysical properties (e.g., rotation and velocity perturbations). I will present recently published results, using our multidimensional hydro/radiative transfer code FORNAX, of one of the first 3D simulations of a CCSN progenitor with detailed microphysics and state of the art neutrino transport. Our model explodes within 100 milliseconds, and is estimated to accumulate energy at a rate of 0.5 Bethe (10^50 erg) over 2 seconds. The vigorous explosion highlights the crucial dependence on input physics and illustrates recent communal progress on understanding CCSNe. He is finishing his PhD on multi-D CCSN simulations with Adam Burrows: https://vartanyandavid7.wixsite.com/dvyan   McPherson 4054 Center for Cosmology and AstroParticle Physics (CCAPP) ccapp@osu.edu America/New_York public

Fifty years have lapsed since the early simulations of Colgate and White identified neutrino heating as key to powering core-collapse supernovae (CCSNe). Yet, for over half a century, the mechanism for producing a robust CCSN explosion has endured as a scientific mystery. Outcome - explosion or dud - depends sensitively on the progenitor structure, the neutrino-matter microphysics, and macrophysical properties (e.g., rotation and velocity perturbations). I will present recently published results, using our multidimensional hydro/radiative transfer code FORNAX, of one of the first 3D simulations of a CCSN progenitor with detailed microphysics and state of the art neutrino transport. Our model explodes within 100 milliseconds, and is estimated to accumulate energy at a rate of 0.5 Bethe (10^50 erg) over 2 seconds. The vigorous explosion highlights the crucial dependence on input physics and illustrates recent communal progress on understanding CCSNe.

He is finishing his PhD on multi-D CCSN simulations with Adam Burrows: https://vartanyandavid7.wixsite.com/dvyan

 

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