A study of cosmic microwave background using non-extensive statistics

IF 2.7 3区物理与天体物理 Q2 ASTRONOMY & ASTROPHYSICS

Experimental Astronomy Pub Date : 2024-06-12 DOI:10.1007/s10686-024-09943-x

Somita Dhal, R. K. Paul

引用次数: 0

Abstract

The cosmic microwave background (CMB) radiation, the relic afterglow of the Big Bang, has become one of the most useful and precise tools in modern precision cosmology. In this article, we employ Tsallis non-extensive statistical framework to calculate the cosmic microwave background (CMB) temperature and its probability distribution by utilising a recently proposed blackbody radiation inversion (BRI) technique and the cosmic background explorer/ far infrared absolute spectrophotometer (COBE/FIRAS) dataset. Here, we have used the best-fit values of q = 0.99888 ± 0.00016 and q = 1.00012 ± 0.00001, obtained by fitting COBE/FIRAS data with two different versions of non-extensive models. We compare the results with the more conventional extensive statistical analysis i.e. for q = 1.

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利用非广延性统计对宇宙微波背景的研究

宇宙微波背景（CMB）辐射是大爆炸的残余余辉，已成为现代精密宇宙学最有用和最精确的工具之一。在这篇文章中，我们利用最近提出的黑体辐射反演（BRI）技术和宇宙背景探测器/远红外绝对分光光度计（COBE/FIRAS）数据集，采用查利斯（Tsallis）非广延性统计框架来计算宇宙微波背景（CMB）温度及其概率分布。在这里，我们使用了两个不同版本的非广延性模型拟合 COBE/FIRAS 数据得到的最佳拟合值 q = 0.99888 ± 0.00016 和 q = 1.00012 ± 0.00001。我们将这些结果与更传统的广泛统计分析（即 q = 1）进行了比较。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Experimental Astronomy 地学天文-天文与天体物理

CiteScore

5.30

自引率

3.30%

发文量

审稿时长

6-12 weeks

期刊介绍： Many new instruments for observing astronomical objects at a variety of wavelengths have been and are continually being developed. Furthermore, a vast amount of effort is being put into the development of new techniques for data analysis in order to cope with great streams of data collected by these instruments. Experimental Astronomy acts as a medium for the publication of papers of contemporary scientific interest on astrophysical instrumentation and methods necessary for the conduct of astronomy at all wavelength fields. Experimental Astronomy publishes full-length articles, research letters and reviews on developments in detection techniques, instruments, and data analysis and image processing techniques. Occasional special issues are published, giving an in-depth presentation of the instrumentation and/or analysis connected with specific projects, such as satellite experiments or ground-based telescopes, or of specialized techniques.