Baryon Acoustic Oscillations. Equation and physical interpretation


Authors

  • Leandro Manuel Pardo Calderón Observatorio Astronómico Nacional, Universidad Nacional de Colombia.

DOI:

https://doi.org/10.22517/23447214.17251

Keywords:

Acoustic oscillations, baryons, cosmological perturbations, Newtonian gauge.

Abstract

Baryon Acoustic Oscillations are a phenomenon occurred before matter-radiation decoupling, characterized because the baryonic matter perturbation presents oscillations, as the name suggests. These perturbations propagate like a pressure wave on the photon-baryon fluid produced by gravitational potentials, which join the baryonic matter, and collisions of baryons and photons, which scatter it. This paper shows the Baryon Acoustic Oscillations equation and it provides its physical meaning. Besides, it presents software CAMB as a tool to find BAO equation solutions and support for its physical description.

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Author Biography

Leandro Manuel Pardo Calderón, Observatorio Astronómico Nacional, Universidad Nacional de Colombia.

Ingeniero Electrónico. Universidad Distrital Francisco José de Caldas. Bogotá, Colombia. Magister en Ciencias-Física. Universidad Nacional de Colombia. Bogotá, Colombia. Grupo de Gravitación, Cosmología y Galaxias. Observatorio Astronómico Nacional. Universidad Nacional de Colombia.

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Published

2018-06-30

How to Cite

Pardo Calderón, L. M. (2018). Baryon Acoustic Oscillations. Equation and physical interpretation. Scientia Et Technica, 23(2), 263–268. https://doi.org/10.22517/23447214.17251

Issue

Vol. 23 No. 2 (2018)

Section

Ciencias Básicas

License

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