Collapse Velocity and Prompt Explosion for the Presupernova Model Ws15Modot

Details Collapse Velocity and Prompt Explosion for the Presupernova Model Ws15Modot Collapse Velocity and Prompt Explosion for the Presupernova Model Ws15Modot

Aug 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006chjaa...6..455l&link_type=abstract

Chinese Journal of Astronomy and Astrophysics, Volume 6, Issue 4, pp. 455-460 (2006).

Astronomy and Astrophysics

Astrophysics

4

Scientific paper

For the presupernova model Ws15Modot, we re-calculate the electron capture (EC) timescale and hydrodynamical (HD) timescale. We found that the EC timescale can be smaller than the HD timescale in the inner region of the collapse iron core at the moment immediately before the shock wave bounce. The change in these two timescales at the late stage of core collapse is expected to affect the collapse velocity. If the late-time collapse velocity is artificially increased by a small quantity, then prompt explosion of the supernova may happen. Further calculations are still needed to check the plausibility of the acceleration mechanism caused by the faster EC process.

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