Bagoly 2008 参数相关性

主要内容:
分析了一些参数的相关性, 有的正相关, 有的反相关. 一共有十个参量.

这种统计性的分析还是蛮有意义的. 可以看出那些量是有内在联系的.

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Title:		Factor analysis of the long gamma-ray bursts
Authors:		Bagoly, Z.; Borgonovo, L.; Meszaros, A.; Balazs, L. G.; Horvath, I.
Publication:		eprint arXiv:0811.1749
Publication Date:		11/2008
Origin:		ARXIV
Keywords:		Astrophysics
Comment:		5 pages, acceptod to A&A
Bibliographic Code:		2008arXiv0811.1749B

Abstract

We study statistically 197 long gamma-ray bursts, detected and measured in detail by the BATSE instrument of the Compton Gamma-Ray Observatory. In the sample 10 variables, describing for any burst the time behavior of the spectra and other quantities, are collected. The factor analysis method is used to find the latent random variables describing the temporal and spectral properties of GRBs. The application of this particular method to this sample indicates that five factors and the $\REpk$ spectral variable (the ratio of peak energies in the spectrum) describe the sample satisfactorily. Both the pseudo-redshifts inferred from the variability, and the Amati-relation in its original form, are disfavored.

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