Research output: Contribution to Journal/Magazine › Journal article › peer-review

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In: Journal of Cosmology and Astroparticle Physics, Vol. 2013, No. 1, 025, 01.2013.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

McDonald, J 2013, 'Baryon-to-dark matter ratio from random angular fields', *Journal of Cosmology and Astroparticle Physics*, vol. 2013, no. 1, 025. https://doi.org/10.1088/1475-7516/2013/01/025

McDonald, J. (2013). Baryon-to-dark matter ratio from random angular fields. *Journal of Cosmology and Astroparticle Physics*, *2013*(1), Article 025. https://doi.org/10.1088/1475-7516/2013/01/025

McDonald J. Baryon-to-dark matter ratio from random angular fields. Journal of Cosmology and Astroparticle Physics. 2013 Jan;2013(1):025. doi: 10.1088/1475-7516/2013/01/025

@article{e128c9bb353a4b0d8546ddd6c1300636,

title = "Baryon-to-dark matter ratio from random angular fields",

abstract = "We consider the baryon-to-dark matter ratio in models where the dark matter and baryon densities depend on angular fields theta(d) and theta(b) according to pd and Pb theta. with all values of Od and Ob being equally probable in a given randomly-selected domain. tinder the assumption that anthropic selection depends primarily on the baryon density in galaxies at spherical collapse, we show that the probability density function for the baryon-to-dark matter ratio r = Omega B/Omega(DM) is purely statistical in nature and is independent of anthropic selection. We compute the probability density function for r as a function of a and i and show that the observed value of the baryon-to-dark matter ratio, r approximate to 1/5, is natural in this framework.",

author = "John McDonald",

year = "2013",

month = jan,

doi = "10.1088/1475-7516/2013/01/025",

language = "English",

volume = "2013",

journal = "Journal of Cosmology and Astroparticle Physics",

issn = "1475-7516",

publisher = "IOP Publishing",

number = "1",

}

TY - JOUR

T1 - Baryon-to-dark matter ratio from random angular fields

AU - McDonald, John

PY - 2013/1

Y1 - 2013/1

N2 - We consider the baryon-to-dark matter ratio in models where the dark matter and baryon densities depend on angular fields theta(d) and theta(b) according to pd and Pb theta. with all values of Od and Ob being equally probable in a given randomly-selected domain. tinder the assumption that anthropic selection depends primarily on the baryon density in galaxies at spherical collapse, we show that the probability density function for the baryon-to-dark matter ratio r = Omega B/Omega(DM) is purely statistical in nature and is independent of anthropic selection. We compute the probability density function for r as a function of a and i and show that the observed value of the baryon-to-dark matter ratio, r approximate to 1/5, is natural in this framework.

AB - We consider the baryon-to-dark matter ratio in models where the dark matter and baryon densities depend on angular fields theta(d) and theta(b) according to pd and Pb theta. with all values of Od and Ob being equally probable in a given randomly-selected domain. tinder the assumption that anthropic selection depends primarily on the baryon density in galaxies at spherical collapse, we show that the probability density function for the baryon-to-dark matter ratio r = Omega B/Omega(DM) is purely statistical in nature and is independent of anthropic selection. We compute the probability density function for r as a function of a and i and show that the observed value of the baryon-to-dark matter ratio, r approximate to 1/5, is natural in this framework.

U2 - 10.1088/1475-7516/2013/01/025

DO - 10.1088/1475-7516/2013/01/025

M3 - Journal article

VL - 2013

JO - Journal of Cosmology and Astroparticle Physics

JF - Journal of Cosmology and Astroparticle Physics

SN - 1475-7516

IS - 1

M1 - 025

ER -