THREE DIMENSINAL STUDY OF ORIENTATION OF SDSS DR-14 u- MAGNITUDE GALAXIES OF REDSHIFT 0.100 TO 0.125

Authors

DOI:

https://doi.org/10.3126/jist.v31i1.92159

Keywords:

Angular-momentum, Cluster of galaxies, Galaxy, Superclusters of galaxy

Abstract

The three-dimensional orientations angular momentum of 105,728 SDSS DR-14 galaxies with redshift ranging from 0.100 to 0.125 are studied in the present article. The non-random effects associated with the orientations of angular momentum in galaxies within the specified redshift range are core objectives to investigate. The evolution of large structure formation is evaluated through three distinct scenarios: the Hierarchy model, the Pancake model, and the Primordial Vorticity model. The two-dimensional observational data-including positions, position angles, and inclination angles-into three-dimensional parameters called azimuthal angle and polar angle of rotation axes. This transformation is accomplished Flin-Godlowskian method (Flin & Godlowski, 1986). The principal work of the study is to establish relation between u-magnitude and the orientation of angular momentum vector. Isotropic curves expected data of are generated by accounting for selection effects and conducting a random simulation that produces 107 virtual galaxies. Three statistical tests: Chi-square analysis, Autocorrelation, and Fourier analysis are used to compare observed and expected results. The comprehensive sample is segmented into ten samples, each with a magnitude range of 0.5. Most of the findings lend support to the Hierarchy model of large-scale structure, which posits that the spin vectors are oriented randomly in relation to a chosen reference plane. An equatorial coordinate system has been selected as our reference. Despite this, localized anisotropies are evident in several samples, suggesting the potential influence of gravitational tidal interactions among neighboring galaxies and an early merging process that may alter the early arrangement of neighboring galaxies.

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Author Biography

Birendra Prasad Yadav, Central Department of Physics, Tribhuvan University, Nepal

Lecturer Amrit Science Campus

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Published

2026-07-01

How to Cite

Yadav, B. P., Yadav, S. N., Kumar Jha, A., & Gautam, K. (2026). THREE DIMENSINAL STUDY OF ORIENTATION OF SDSS DR-14 u- MAGNITUDE GALAXIES OF REDSHIFT 0.100 TO 0.125. Journal of Institute of Science and Technology, 31(1), 369–378. https://doi.org/10.3126/jist.v31i1.92159

Issue

Vol. 31 No. 1 (2026)

Section

Research Articles

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