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Explosion of Fast Spinning Sub-Chandrasekhar Mass White Dwarfs

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Part of the Springer Proceedings in Physics book series (SPPHY,volume 219)

Abstract

We study the explosion of rotating sub-Chandrasekhar mass white dwarfs using three-dimensional hydrodynamic simulations. High rotational speeds are assumed in order to significantly distort the initial spherical geometry of the white dwarf. Unlike spherically symmetric models, when He-ignition is located far from the spinning axis the detonation wave trains arrive asynchronously to the antipodes. Models considering different masses of the He-shell, He-ignition locations and rotational velocities are analyzed. We study independently both, the detonation of the He-shell, artificially avoiding carbon-ignition, and the complete detonation of the white dwarf. Our calculations support the viability of the Double Detonation mechanism when the white dwarf is spinning fast.

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Fig. 62.1

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Acknowledgements

This work has been supported by the MINECO Spanish projects AYA2017-86274-P and MINECO-FEDER AYA2015-63588-P, by the Generalitat of Catalonia SGR-661/2017 and the Swiss PASC project SPH-EXA. The authors acknowledge the support of sciCORE computing facility at University of Basel.

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Correspondence to I. Domínguez .

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Domínguez, I., Cabezón, R.M., García-Senz, D. (2019). Explosion of Fast Spinning Sub-Chandrasekhar Mass White Dwarfs. In: Formicola, A., Junker, M., Gialanella, L., Imbriani, G. (eds) Nuclei in the Cosmos XV. Springer Proceedings in Physics, vol 219. Springer, Cham. https://doi.org/10.1007/978-3-030-13876-9_62

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