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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

The distribution of spin directions of $\sim6.4\cdot10^4$ SDSS spiral galaxies with spectra was examined, and compared to the distribution of $\sim3.3\cdot10^4$ Pan-STARRS galaxies. The analysis shows a statistically significant asymmetry…

Cosmology and Nongalactic Astrophysics · Physics 2020-08-19 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

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 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

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

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

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

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

The distribution of the spin directions of spiral galaxies in the Sloan Digital Sky Survey has been a topic of debate in the past two decades, with conflicting conclusions reported even in cases where the same data was used. Here we follow…

Cosmology and Nongalactic Astrophysics · Physics 2023-03-15 Darius McAdam , 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

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

Observation has not yet determined whether the distribution of spin vectors of galaxies is truly random. It is unclear whether is there any large-scale symmetry-breaking in the distribution of the vorticity field in the universe. Here, we…

Astrophysics of Galaxies · Physics 2021-02-17 Masanori Iye , Masafumi Yagi , Hideya Fukumoto

Recent independent observations using several different telescope systems an analysis methods have provided evidence of parity violation between the number of galaxies that spin in opposite directions. On the other hand, other studies…

Cosmology and Nongalactic Astrophysics · Physics 2023-09-08 Lior Shamir

The unprecedented imaging power of JWST provides new abilities to observe the shapes of objects in the early Universe in a way that has not been possible before. Recently, JWST acquired a deep field image inside the same field imaged in the…

Cosmology and Nongalactic Astrophysics · Physics 2024-06-05 Lior Shamir

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

The distribution of the spin directions of galaxies has been a question in the past decade, with numerous Earth-based and space-based experiments showing that the distribution is not necessarily random. These experiments were based on…

Cosmology and Nongalactic Astrophysics · Physics 2024-04-23 Lior Shamir

The DESI Legacy Survey is a digital sky survey with a large footprint compared to other Earth-based surveys, covering both the Northern and Southern hemispheres. This paper shows the distribution of the spin directions of spiral galaxies…

Cosmology and Nongalactic Astrophysics · Physics 2022-08-31 Lior Shamir

We search for and find fossil evidence that the distribution of the spin axes of galaxies in cosmic web filaments relative to their host filaments are not randomly distributed. This would indicate that the action of large scale tidal…

Cosmology and Nongalactic Astrophysics · Physics 2015-05-18 Bernard J. T. Jones , Rien van de Weygaert , Miguel A. Aragon-Calvo

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
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