伽玛暴(Gamma-Ray Burst)笔记。记录有关伽玛暴的新文章,另外也包括看的老文章、自己的想法、以及跟天文相关的一些东西。 Feel free to leave me a message by comments or by email.

星期三, 五月 23, 2007

Woosley 2006 核塌缩型超新星的模型

主要内容:
企图得出无旋转无磁场情况下中微子主导的核塌缩超新星模型(这是一个自然的主导模型,应该算零级近似,而旋转、磁场等应该算一级近似),但是还没有成功。指出超新星的能量来源已经公认为来自引力能;认为超新星应该来自中微子的贡献,而伽玛暴于前身星的旋转有关。(这和我前面那个条目认为伽玛暴与中心黑洞有关不同啊,不过他说得好像也很有道理,因为伽玛暴是高度极束的,只有旋转才能有方向。)

精彩摘抄:


文章信息:

The Physics of Core-Collapse Supernovae

Authors: S. Woosley (UC Santa Cruz), H.-T. Janka (MPI Astrophysics, Garching)
Abstract: Supernovae are nature's grandest explosions and an astrophysical laboratory in which unique conditions exist that are not achievable on Earth. They are also the furnaces in which most of the elements heavier than carbon have been forged. Scientists have argued for decades about the physical mechanism responsible for these explosions. It is clear that the ultimate energy source is gravity, but the relative roles of neutrinos, fluid instabilities, rotation and magnetic fields continue to be debated.
Comments:
Review article; 17 pages, 5 figures
Subjects:
Astrophysics (astro-ph)
Journal reference:
Nature Physics 1 (2005) 147

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