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arXiv 0705.4472astro-ph
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伽马射线暴的宇宙学意义

Cosmological implications of Gamma Ray Bursts

Gabriele Ghisellini

摘要:

发现伽马射线暴的热能量学(和/或峰值亮度)与它们的光谱特性相关,这使得可以将暴能量学标准化到一定程度,使它们能够用于限制宇宙学参数,就像SN Ia一样。相对于Ia型超新星,它的优点是没有消光问题,而且在大红移时也很容易被探测到。另一方面,这些光谱-能量相关性尚未被理解,具有完整信息集(以标准化其能量)的爆发仍然很少(20多个)。已经有人试图用这些爆发来约束Omega_Lambda和Omega_M,甚至是暗能量状态方程。这些结果非常令人鼓舞。

英文摘要:

The discovery that the bolometric energetics (and/or peak luminosity) of Gamma Ray Bursts correlates with their spectral properties has allowed to standardize the burst energetics to such a degree to enable their use for constraining the cosmological parameters, in the same way as SN Ia. With respect to SN Ia, there is the advantage of having sources free from extinction problems, and easily detectable also at large redshifts. On the other hand, these spectral-energy correlations are not yet understood, and bursts with a complete set of information (to standardize their energetics) are still few (two dozens). There have been already attempts to use these bursts to constrain Omega_Lambda and Omega_M, and even the dark energy equation of state. These results are very encouraging.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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