Basic Interactions in Black Hole Cosmology

Seshavatharam, U. V. S.

doi:10.11648/j.ajaa.20140201.12

Cited by 3 publications

(4 citation statements)

References 44 publications

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“…One of the cosmological models aligned with the contention that the Universe is oriented around a large-scale axis is black hole cosmology (Pathria, 1972), according which the Universe is the interior of a black hole in another universe (Pathria, 1972;Stuckey, 1994;Easson and Brandenberger, 2001;Seshavatharam, 2010;Pop lawski, 2010b;Tatum et al, 2018;Christillin, 2014;Chakrabarty et al, 2020). Since black holes spin (Gammie et al, 2004;Takahashi, 2004;Volonteri et al, 2005;McClintock et al, 2006;Mudambi et al, 2020;Reynolds, 2021), a universe hosted inside a black hole should inherit its spin from its host black hole (Pop lawski, 2010a;Seshavatharam, 2010;Seshavatharam and Lakshminarayana, 2014;Christillin, 2014;Seshavatharam and Lakshminarayana, 2020b,a).…”

Section: Introductionmentioning

confidence: 99%

Using 3D and 2D analysis for analyzing large-scale asymmetry in galaxy spin directions

Shamir

2022

Publications of the Astronomical Society of Japan

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The nature of galaxy spin is still not fully known. Iye, Yagi, and Fukumoto (2021, AJ, 907, 123) 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 spiral galaxies is random, providing a dipole axis with low statistical significance of 0.29σ. However, to show random distribution, two decisions were made, each of which can lead to random distribution regardless of the real distribution of the spin direction of galaxies. The first decision was to limit the dataset arbitrarily to z < 0.1, which is a redshift range in which previous literature already showed that random distribution is expected. More importantly, while the 3D analysis requires the redshift of each galaxy, the analysis was done with the photometric redshift. If the asymmetry existed, its signal is expected to be an order of magnitude weaker than the error of the photometric redshift, and therefore a low statistical signal under these conditions is expected. When using the exact same data without limiting to zphot < 0.1 and without using the photometric redshift, the distribution of the spin directions in that dataset shows a statistical signal of >2σ. Code and data for reproducing the analysis are publicly available. These results are in agreement with other experiments with SDSS, Pan-STARRS, HST, and the DESI Legacy Survey. The paper also examines other previous studies that showed random distribution in galaxy spin directions. While further research will be required, the current evidence suggests that large-scale asymmetry between the number of clockwise and counterclockwise galaxies cannot be ruled out.

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Section: Introductionmentioning

confidence: 99%

Using 3D and 2D analysis for analyzing large-scale asymmetry in galaxy spin directions

Shamir

2022

Publications of the Astronomical Society of Japan

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“…Based on the relations proposed in sections 2 and 4 observed cosmic redshift can be considered as a result of cosmological light emission mechanism. Authors are working on the assumed Hubble volume and Hubble mass in different directions with different applications [1][2][3][4][5][6][7][8][9][10][11][12][13] that connect micro physics and macro physics. Based on the proposed applications and short comings of the standard model of cosmology -concepts of black hole cosmology may be given at least 99% priority.…”

Section: To Fit the Nuclear Charge Radius And The Planck's Constantmentioning

confidence: 99%

“…Authors published their concepts on black hole cosmology in many online journals [1][2][3][4][5][6][7][8][9][10][11][12][13]. In this paper by highlighting the basic short comings of Friedmann cosmology [14] an attempt is made to review the model of black hole cosmology [15][16][17][18][19][20][21][22][23][24][25][26][27][28] in terms of cosmic redshift, CMBR redshift, cosmic growth index, cosmic growth rate and cosmic age.…”

Section: Introductionmentioning

confidence: 99%

Basics of the decelerating black hole universe

Uv¹,

Lakshminarayana

2014

International Journal of Advanced Astronomy

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“…If these observations reflect the real large-scale structure of the Universe, they shift from the Cosmological Principle and the standard cosmological models (Aluri et al, 2022), and can be related to several alternative theories. These include ellipsodial Universe (Campanelli et al, 2006(Campanelli et al, , 2011Gruppuso, 2007;Cea, 2014), rotating Universe (Gödel, 1949;Ozsváth and Schücking, 1962;Ozsvath and Schücking, 2001;Sivaram and Arun, 2012;Chechin, 2016;Seshavatharam and Lakshminarayana, 2020a;Campanelli, 2021), or black hole cosmology (Pathria, 1972;Easson and Brandenberger, 2001;Seshavatharam and Lakshminarayana, 2014;Pop lawski, 2010;Tatum et al, 2018;Christillin, 2014;Seshavatharam and Lakshminarayana, 2020b;Chakrabarty et al, 2020).…”

Section: Introductionmentioning

confidence: 99%

Reanalysis of the spin direction distribution of Galaxy Zoo SDSS spiral galaxies

McAdam¹,

Shamir²

2023

Preprint

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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 one of the previous experiments by applying the SpArcFiRe algorithm to annotate the spin directions in original dataset of Galaxy Zoo 1. The annotation of the galaxy spin directions is done after a first step of selecting the spiral galaxies in three different manners: manual analysis by Galaxy Zoo classifications, by a model-driven computer analysis, and with no selection of spiral galaxies. The results show that when spiral galaxies are selected by Galaxy Zoo volunteers, the distribution of their spin directions as determined by SpArcFiRe is not random, which agrees with previous reports. When selecting the spiral galaxies using a model-driven computer analysis or without selecting the spiral galaxies at all, the distribution is also not random. Simple binomial distribution analysis shows that the probability of the parity violation to occur by chance is lower than 0.01. Fitting the spin directions as observed from Earth to cosine dependence exhibits a dipole axis with statistical strength of 2.33σ to 3.97σ. These experiments show that regardless of the selection mechanism and the analysis method, all experiments show similar conclusions. These results are aligned with previous reports using other methods and telescopes, suggesting that the spin directions of spiral galaxies as observed from Earth exhibit a dipole axis formed by their spin directions. Possible explanations can be related to the large-scale structure of the Universe, or to internal structure of galaxies. The catalogs of annotated galaxies generated as part of this study are available.

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Basic Interactions in Black Hole Cosmology

Cited by 3 publications

References 44 publications

Using 3D and 2D analysis for analyzing large-scale asymmetry in galaxy spin directions

Using 3D and 2D analysis for analyzing large-scale asymmetry in galaxy spin directions

Basics of the decelerating black hole universe

Reanalysis of the spin direction distribution of Galaxy Zoo SDSS spiral galaxies

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