中国物理B ›› 2008, Vol. 17 ›› Issue (10): 3917-3921.doi: 10.1088/1674-1056/17/10/060

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Effect of pressure grads on convection in inner core of type II supernova

刘门全1, 罗志全2   

  1. (1)Institute of Theoretical Physics, China West Normal University, Nanchong 637002, China; (2)Institute of Theoretical Physics, China West Normal University, Nanchong 637002, China
  • 收稿日期:2008-01-31 修回日期:2008-03-25 出版日期:2008-10-20 发布日期:2008-10-20
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant No 10778719).

Effect of pressure grads on convection in inner core of type II supernova

Luo Zhi-Quan(罗志全)† and Liu Men-Quan(刘门全)   

  1. Institute of Theoretical Physics, China West Normal University, Nanchong 637002, China
  • Received:2008-01-31 Revised:2008-03-25 Online:2008-10-20 Published:2008-10-20
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant No 10778719).

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摘要： By adjusting the pressure grads in the stage of formation of the shock wave, a successful prompt explosion process has been numerically simulated through a progenitor model of 15Msolar, in which the effects of pressure grads on various convections, including the Rayleigh--Taloy (R-T) convection, the lepton driven convection and the negative entropy grads driven convection, in an inner core are analysed. The simulation results show that the increase of the pressure grads in the inner core region may cause a powerful convection, which causes energy transfer from the inner core to the shock wave rapidly and efficiently.

关键词: supernova, convection, pressure grads

Abstract: By adjusting the pressure grads in the stage of formation of the shock wave, a successful prompt explosion process has been numerically simulated through a progenitor model of 15Msolar, in which the effects of pressure grads on various convections, including the Rayleigh--Taloy (R-T) convection, the lepton driven convection and the negative entropy grads driven convection, in an inner core are analysed. The simulation results show that the increase of the pressure grads in the inner core region may cause a powerful convection, which causes energy transfer from the inner core to the shock wave rapidly and efficiently.

Key words: supernova, convection, pressure grads

中图分类号:  (Supernovae)

  • 97.60.Bw
97.10.Cv (Stellar structure, interiors, evolution, nucleosynthesis, ages) 95.30.Sf (Relativity and gravitation) 95.30.Tg (Thermodynamic processes, conduction, convection, equations of state)