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3D Core-Collapse Supernova Simulations: Neutron Star Kicks and Nickel Distribution

Published online by Cambridge University Press:  05 September 2012

Annop Wongwathanarat ,
Hans-Thomas Janka  and
Ewald Müller
Annop Wongwathanarat
Affiliation:
Max-Planck Institut für Astrophysik, Karl-Schwarzschild-Straß e 1, D-85748 Garching, Germany email: [email protected]
Hans-Thomas Janka
Affiliation:
Max-Planck Institut für Astrophysik, Karl-Schwarzschild-Straß e 1, D-85748 Garching, Germany email: [email protected]
Ewald Müller
Affiliation:
Max-Planck Institut für Astrophysik, Karl-Schwarzschild-Straß e 1, D-85748 Garching, Germany email: [email protected]
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Abstract

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We perform a set of neutrino-driven core-collapse supernova (CCSN) simulations studying the hydrodynamical neutron star kick mechanism in three-dimensions. Our simulations produce neutron star (NS) kick velocities in a range between ~100-600 km/s resulting mainly from the anisotropic gravitational tug by the asymmetric mass distribution behind the supernova shock. This stochastic kick mechanism suggests that a NS kick velocity of more than 1000 km/s may as well be possible. An enhanced production of heavy elements in the direction roughly opposite to the NS recoil direction is also observed as a result of the asymmetric explosion. This large scale asymmetry might be detectable and can be used to constrain the NS kick mechanism.

Keywords

(stars:) supernovae: general(stars:) pulsars: general
Type
Contributed Papers
Information
Proceedings of the International Astronomical Union , Volume 7 , Symposium S279: Death of Massive Stars: Supernovae and Gamma-Ray Bursts , April 2011 , pp. 150 - 153
Copyright
Copyright © International Astronomical Union 2012

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