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In the past decade, an asymmetry in the large-scale distribution of galaxy spin directions has been observed in data from all relevant digital sky surveys, all showing a higher number of galaxies rotating in the opposite direction relative…

Cosmology and Nongalactic Astrophysics · Physics 2024-11-14 Lior Shamir

The asymmetry in the large-scale distribution of the directions towards spiral galaxies rotate has been observed by multiple telescopes, all show a consistent asymmetry in the distribution of galaxy spin directions as observed from Earth.…

Cosmology and Nongalactic Astrophysics · Physics 2024-10-22 Lior Shamir

Several recent observations using large datasets of galaxies showed non-random distribution of the spin directions of spiral galaxies, even when the galaxies are too far from each other to have gravitational interaction. Here, a dataset of…

Cosmology and Nongalactic Astrophysics · Physics 2020-12-16 Lior Shamir

Multiple observations made by several different telescopes have shown asymmetry between the number of spiral galaxies rotating in opposite directions in different parts of the sky. One of the immediate questions regarding the possible…

Cosmology and Nongalactic Astrophysics · Physics 2022-04-12 Lior Shamir

JWST provides a view of the Universe never seen before, and specifically fine details of galaxies in deep space. JWST Advanced Deep Extragalactic Survey (JADES) is a deep field survey, providing unprecedentedly detailed view of galaxies in…

Cosmology and Nongalactic Astrophysics · Physics 2025-02-27 Lior Shamir

Recent observations using several different telescopes and sky surveys showed patterns of asymmetry in the distribution of galaxies by their spin directions as observed from Earth. These studies were done with data imaged from the Northern…

Cosmology and Nongalactic Astrophysics · Physics 2021-08-18 Lior Shamir

The paper shows an analysis of the large-scale distribution of galaxy spin directions of 739,286 galaxies imaged by DES. The distribution of the spin directions of the galaxies exhibits a large-scale dipole axis. Comparison of the location…

Cosmology and Nongalactic Astrophysics · Physics 2022-08-02 Lior Shamir

The ability of digital sky surveys to collect and store very large amounts of data provides completely new ways to study the local universe. Perhaps one of the most provocative observations reported with such tools is the asymmetry between…

Astrophysics of Galaxies · Physics 2020-06-03 Lior Shamir

The nature of galaxy spin is still not fully known. Iye et al (2021) applied a 3D analysis to a dataset of bright SDSS galaxies that was used in the past for photometric analysis. They showed that the distribution of spin directions of…

Cosmology and Nongalactic Astrophysics · Physics 2022-10-12 Lior Shamir

Previous observations have suggested non-random distribution of spin directions of galaxies at scales far larger than the size of a supercluster. Here I use $\sim1.7\cdot10^5$ spiral galaxies from SDSS and $3.3\cdot10^4$ spiral galaxies…

Astrophysics of Galaxies · Physics 2020-11-17 Lior Shamir

Spiral arms are one of the most important features used to classify the morphology of local galaxies. The cosmic epoch when spiral arms first appeared contains essential clues to the evolution of disk galaxies. In this letter, we used James…

Astrophysics of Galaxies · Physics 2024-04-24 Vicki Kuhn , Yicheng Guo , Alec Martin , Julianna Bayless , Ellie Gates , AJ Puleo

A preference for spiral galaxies in one sector of the sky to be left-handed or right-handed spirals would indicate a parity violating asymmetry in the overall universe and a preferred axis. This study uses 15158 spiral galaxies with…

Cosmology and Nongalactic Astrophysics · Physics 2011-04-15 Michael J. Longo

In this article I extend an earlier study of spiral galaxies in the Sloan Digital Sky Survey (SDSS) to investigate whether the universe has an overall handedness. A preference for spiral galaxies in one sector of the sky to be left-handed…

Cosmology and Nongalactic Astrophysics · Physics 2009-04-17 Michael J. Longo

Spiral galaxies are ubiquitous in the local Universe. However the properties of spiral arms in them are still not well studied, and there is even less information concerning spiral structure in distant galaxies. We aim to measure the most…

Astrophysics of Galaxies · Physics 2025-03-12 Ilia V. Chugunov , Alexander A. Marchuk , Aleksandr V. Mosenkov

A dataset of 126,501 spiral galaxies taken from Sloan Digital Sky Survey was used to analyze the large-scale galaxy handedness in different regions of the local universe. The analysis was automated by using a transformation of the galaxy…

Cosmology and Nongalactic Astrophysics · Physics 2015-06-05 Lior Shamir

In this article I study the distribution of spiral galaxies in the Sloan Digital Sky Survey (SDSS) to investigate whether the universe has an overall handedness. A preference for spiral galaxies in one sector of the sky to be left-handed or…

Astrophysics · Physics 2007-08-29 Michael J. Longo

The ability to collect unprecedented amounts of astronomical data has enabled the studying scientific questions that were impractical to study in the pre-information era. This study uses large datasets collected by four different robotic…

Cosmology and Nongalactic Astrophysics · Physics 2022-06-02 Lior Shamir

Multiple previous studies using several different probes have shown considerable evidence for the existence of cosmological-scale anisotropy and a Hubble-scale axis. One of the probes that show such evidence is the distribution of the…

Cosmology and Nongalactic Astrophysics · Physics 2022-08-24 Lior Shamir

Spin patterns of spiral galaxies can be broadly separated into galaxies with clockwise (Z-wise) patterns and galaxies with counterclockwise (S-wise) spin patterns. While the differences between these patterns are visually noticeable, they…

Astrophysics of Galaxies · Physics 2017-09-01 Lior Shamir

The distribution of spin direction of ~6.4*10^4 spiral galaxies with spectra was examined. The analysis shows a statistically significant cosmological-scale asymmetry between galaxies with opposite spin direction. The data also reveals that…

Astrophysics of Galaxies · Physics 2019-12-18 Lior Shamir
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