学术
摘 要:
针对前身星模型Ws15M⊙，采用程序WLYW89数值模拟了超新星瞬时爆发过程；数值结果表明，在不增大压强的前提下，适当调节坍缩和反弹阶段的压强梯度，超新星瞬时爆发是可以获得成功的．在有限的引力释放能量的情况下，压强梯度的调整增加了对流传能机制，可以缩短瞬时爆发所用的时间，提高爆发能量，使得瞬时强爆炸能够成功．[著者文摘]
文章出处:
《天文学报》-2008年1期 -12-17页
分 类 号:
文献标识码:
A
Pressure Gradient and the Supernova Explosion of Presupernova Model Ws15M⊙
LUO Zhi-quan , LIU Men-quan, PENG Qiu-he （1 Institute of Theoretical Physics, China West Normal University, Nanchong, Sichuan, China 637002;2 Department of Astronomy, Nanjing University, Nanjing 210093）
Abstract:
Numerical simulation on the supernova explosion of the presupernova model Ws15M⊙ has been performed using the program WLYW89. It is shown that the supernova prompt explosion may be success by properly adjusting the pressure gradient at the stage of the collapse and the rebound respectively, simultaneously, and not increasing the pressure in the iron core. In the case of insufficient releasing energy by gravity, the adjustment of the pressure gradient has strengthened the mechanism of the transferring energy by convection. This may shorten the time and increase the explosion energy of the supernova explosion. It makes the supernova prompt explosion reality.[著者文摘]
Key words:
Supernova;General, Methods; Numerical
基金资助:
国家自然科学基金（10778719）和四川省教育厅重点科研项目（2006A079）资助 本工作所用的模拟程序是在中国科学院应用数学研究所王贻仁、张锁春、谢佐恒、汪惟中等经过多年编制的超新星爆发的数值模拟程序WLYW89的基础上修改而成的,本文作者对上述4位研究员的支持表示衷心感谢.
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