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• W4299635444 endingPage "986" @default.
• W4299635444 startingPage "963" @default.
• W4299635444 abstract "We study hydrodynamic instabilities during the first seconds of core-collapse supernovae by means of 2D simulations with approximative neutrino transport and boundary conditions that parameterize the effects of the contracting neutron star and allow us to obtain sufficiently strong neutrino heating and, hence, neutrino-driven explosions. Confirming more idealised studies, as well as supernova simulations with spectral transport, we find that random seed perturbations can grow by hydrodynamic instabilities to a globally asymmetric mass distribution in the region between the nascent neutron star and the accretion shock, leading to a dominance of dipole () and quadrupole () modes in the explosion ejecta, provided the onset of the supernova explosion is sufficiently slower than the growth time scale of the low-mode instability. By gravitational and hydrodynamic forces, the anisotropic mass distribution causes an acceleration of the nascent neutron star, which lasts for several seconds and can propel the neutron star to velocities of more than 1000 km s-1. Because the explosion anisotropies develop chaotically and change by small differences in the fluid flow, the magnitude of the kick varies stochastically. No systematic dependence of the average neutron star velocity on the explosion energy or the properties of the considered progenitors is found. Instead, the anisotropy of the mass ejection, and hence of the kick, seems to increase when the nascent neutron star contracts more quickly, and thus low-mode instabilities can grow more rapidly. Our more than 70 models separate into two groups, one with high and the other with low neutron star velocities and accelerations after one second of post-bounce evolution, depending on whether the mode is dominant in the ejecta or not. This leads to a bimodality of the distribution when the neutron star velocities are extrapolated to their terminal values. Establishing a link to the measured distribution of pulsar velocities, however, requires a much larger set of calculations and ultimately 3D modelling." @default.
• W4299635444 created "2022-10-02" @default.
• W4299635444 creator A5009164035 @default.
• W4299635444 creator A5013266043 @default.
• W4299635444 creator A5059350329 @default.
• W4299635444 creator A5077029599 @default.
• W4299635444 date "2006-09-12" @default.
• W4299635444 modified "2023-10-17" @default.
• W4299635444 title "Multidimensional supernova simulations with approximative neutrino transport" @default.
• W4299635444 cites W1498713744 @default.
• W4299635444 cites W1639186550 @default.
• W4299635444 cites W1823435599 @default.
• W4299635444 cites W1969966240 @default.
• W4299635444 cites W1972285166 @default.
• W4299635444 cites W1978043740 @default.
• W4299635444 cites W1979707081 @default.
• W4299635444 cites W1980657764 @default.
• W4299635444 cites W1986476365 @default.
• W4299635444 cites W1987673284 @default.
• W4299635444 cites W1987733395 @default.
• W4299635444 cites W1990974869 @default.
• W4299635444 cites W1994384437 @default.
• W4299635444 cites W2000006405 @default.
• W4299635444 cites W2006147408 @default.
• W4299635444 cites W2006406952 @default.
• W4299635444 cites W2008600157 @default.
• W4299635444 cites W2009850378 @default.
• W4299635444 cites W2009935460 @default.
• W4299635444 cites W2011160154 @default.
• W4299635444 cites W2012349276 @default.
• W4299635444 cites W2016878442 @default.
• W4299635444 cites W2017122931 @default.
• W4299635444 cites W2022304528 @default.
• W4299635444 cites W2025272112 @default.
• W4299635444 cites W2025874547 @default.
• W4299635444 cites W2034555193 @default.
• W4299635444 cites W2034990709 @default.
• W4299635444 cites W2041775938 @default.
• W4299635444 cites W2042298420 @default.
• W4299635444 cites W2047798125 @default.
• W4299635444 cites W2048904626 @default.
• W4299635444 cites W2049955461 @default.
• W4299635444 cites W2050022378 @default.
• W4299635444 cites W2058362186 @default.
• W4299635444 cites W2061914906 @default.
• W4299635444 cites W2065012910 @default.
• W4299635444 cites W2065179406 @default.
• W4299635444 cites W2067172078 @default.
• W4299635444 cites W2067173177 @default.
• W4299635444 cites W2070331420 @default.
• W4299635444 cites W2073945818 @default.
• W4299635444 cites W2078766161 @default.
• W4299635444 cites W2079167883 @default.
• W4299635444 cites W2083939807 @default.
• W4299635444 cites W2086727759 @default.
• W4299635444 cites W2087660623 @default.
• W4299635444 cites W2093902987 @default.
• W4299635444 cites W2094632338 @default.
• W4299635444 cites W2095216595 @default.
• W4299635444 cites W2099496017 @default.
• W4299635444 cites W2099799829 @default.
• W4299635444 cites W2100404966 @default.
• W4299635444 cites W2112475898 @default.
• W4299635444 cites W2130841528 @default.
• W4299635444 cites W2150865874 @default.
• W4299635444 cites W2158407804 @default.
• W4299635444 cites W2160347877 @default.
• W4299635444 cites W2165216229 @default.
• W4299635444 cites W2171431553 @default.
• W4299635444 cites W2179565573 @default.
• W4299635444 cites W2312339995 @default.
• W4299635444 cites W2990299102 @default.
• W4299635444 cites W3099454656 @default.
• W4299635444 cites W3099625043 @default.
• W4299635444 cites W3099830248 @default.
• W4299635444 cites W3101766558 @default.
• W4299635444 cites W3102236006 @default.
• W4299635444 cites W3102711520 @default.
• W4299635444 cites W3102734396 @default.
• W4299635444 cites W3102775513 @default.
• W4299635444 cites W3103776670 @default.
• W4299635444 cites W3104624031 @default.
• W4299635444 cites W3105383955 @default.
• W4299635444 cites W3105411688 @default.
• W4299635444 cites W3105452456 @default.
• W4299635444 cites W3105891302 @default.
• W4299635444 cites W3106205100 @default.
• W4299635444 cites W3122501376 @default.
• W4299635444 cites W4237644094 @default.
• W4299635444 cites W4250078920 @default.
• W4299635444 cites W4295664431 @default.
• W4299635444 cites W4300490512 @default.
• W4299635444 cites W4301386907 @default.
• W4299635444 cites W644751317 @default.
• W4299635444 doi "https://doi.org/10.1051/0004-6361:20064855" @default.
• W4299635444 hasPublicationYear "2006" @default.
• W4299635444 type Work @default.
• W4299635444 citedByCount "271" @default.

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