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- W3186302421 abstract "We conduct one-dimensional stellar evolution simulations in the mass range $13-20 M_{odot}$ to late core collapse times and find that an inner vigorous convective zone with large specific angular momentum fluctuations appears at the edge of the iron core during the collapse. The compression of this zone during the collapse increases the luminosity there and the convective velocities, such that the specific angular momentum fluctuations are of the order of j_{conv}~5x10^15cm^2/sec. If we consider that three-dimensional simulations show convective velocities that are three to four times larger than what the mixing length theory gives, and that the spiral standing accretion shock instability in the post-shock region of the stalled shock at a radius of ~100km amplify perturbations, we conclude that the fluctuations that develop during core collapse are likely to lead to stochastic (intermittent) accretion disks around the newly born neutron star. In reaching this conclusion we also make two basic assumptions with uncertainties that we discuss. Such intermittent disks can launch jets that explode the star in the frame of the jittering jets explosion mechanism." @default.
- W3186302421 created "2021-08-02" @default.
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- W3186302421 date "2021-09-09" @default.
- W3186302421 modified "2023-10-14" @default.
- W3186302421 title "Supplying angular momentum to the jittering jets explosion mechanism using inner convection layers" @default.
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- W3186302421 doi "https://doi.org/10.1093/mnrasl/slab105" @default.
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