高能费米伽马暴的内在峰值光度与光谱峰值能量的相关性

Proceedings of 5th Annual Conference on High Energy Astrophysics in Southern Africa — PoS(HEASA2017) Pub Date : 2018-10-25 DOI:10.22323/1.319.0002

F. Dirirsa, S. Razzaque

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引用次数: 0

摘要

我们选择了Fermi-LAT/GBM探测到的红移已知的高能伽马射线暴，并计算了在1 kv -10 MeV和1 kv -30 MeV能量范围内，$\nu F_{\nu}$能谱的本征峰值光度($L_{\rm iso}$)和峰值能量($E_{\rm i,p}$)之间的相关关系，称为Yonetoku关系。这种相关性有可能使grb成为标准蜡烛，类似于Ia型超新星，但扩展到高红移。我们利用Yonetoku关系对伽玛暴样本在高红移下的λ -冷-暗物质宇宙学模型的参数进行了探索。

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Correlation between intrinsic peak luminosity and spectral peak energy for energetic Fermi GRBs

We select energetic GRBs detected by Fermi-LAT/GBM with known redshift and compute the correlation between the intrinsic peak luminosity ($L_{\rm iso}$) and peak energy ($E_{\rm i,p}$) of the $\nu F_{\nu}$ energy spectrum, known as the Yonetoku relation, in the 1 keV-10 MeV and 1 keV-30 MeV energy ranges. This correlation has the potential to make GRBs standard candles, similar to type Ia supernovae, but extending to high redshift. We explore parameters of the Lambda-Cold-Dark- Matter cosmological model at high redshift using Yonetoku relation for our sample of GRBs.

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Proceedings of 5th Annual Conference on High Energy Astrophysics in Southern Africa — PoS(HEASA2017)

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