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Hidden periodicity in Stripe 82 with Saraswati supercluster—a fractal analysis
Communications in Theoretical Physics ( IF 2.4 ) Pub Date : 2020-12-18 , DOI: 10.1088/1572-9494/abc3ab
Vimal Raj , M S Swapna , S Sankararaman

The manuscript attempts to explore the periodicity in the distribution of galaxies in the recently reported Saraswati supercluster and the Stripe 82 region containing it as an example. The report of 120 Mpc periodicity in the Abell galaxy clusters by power spectrum analysis is the motivation behind the study. The power spectral analysis across the central part of the Stripe 82 region shows a periodic variation of 3.09 or 71 Mpc in fractal dimension whereas an average angular periodicity of 3.45 or 94 Mpc is observed across the Stripe 82 region. This refers to the periodicity of complexity or cluster density of galaxy distribution. The texture of the distribution pattern understood through lacunarity analysis indicates a near symmetric distribution. Fractal dimensions like box-counting dimension, information dimension and correlation dimension are also found through multifractal analysis. While the information dimension tells about the distribution density of galactic points, the correlation dimension details the distribution of galaxies in the neighbourhood.



中文翻译:

Saraswati超群在Stripe 82中的隐藏周期性—分形分析

该手稿试图探索最近报道的萨拉斯瓦蒂超集群和包含该星系的Stripe 82区域中星系分布的周期性。通过功率谱分析得出的有关Abell星系团中120 Mpc周期性的报告是该研究的动机。横跨条纹82区域中心部分的功率谱分析显示,分形维数的周期性变化为3.09或71 Mpc,而在条纹82区域中观察到的平均角周期性为3.45或94 Mpc。这是指星系分布的复杂性周期或星团密度。通过疏cu分析了解的分布模式的纹理表明接近对称的分布。分形维数,例如盒数维,信息维和相关维也可以通过多重分形分析找到。信息维度说明了银河点的分布密度,而相关维度则详细说明了附近星系的分布。

更新日期:2020-12-18
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