| Budget Amount *help |
¥17,680,000 (Direct Cost: ¥13,600,000、Indirect Cost: ¥4,080,000)
Fiscal Year 2018: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2017: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Fiscal Year 2016: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
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| Outline of Final Research Achievements |
In this study, we aimed to perform first-principles simulations of gravitational collapse of massive star cores in multi-dimensions. It is a process to produce supernova explosions and is accompanied by the formation of compact stars such as neutron stars and black holes. We developed a numerical code that does not employ any artificial approximation unlike other codes and that is fully general relativistic. We applied the code to the simulation of core-collapse supernovae under axisymmetry and found an explosion in one of the models. This is the first-ever success in multi-dimensional simulations at this level of sophistication in neutrino transfer. We also studied the influences of rotations on the dynamics. In these simulations, gravity was still Newtonian. We hence developed a code to solve the Einstein equations numerically. One of nice features of this code is that it employs spherical coordinates unlikes others. We fully tested this code and found that it works well indeed.
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