On the void explanation of the Cold Spot

Marcos Caballero, Airam Eduardo; Fernández Cobos, Raúl; Martínez González, Enrique; Vielva Martínez, Patricio

doi:10.1093/mnrasl/slw063

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VoidExplanationCold.pdf (448.7Kb)

Identificadores

URI: https://hdl.handle.net/10902/34480

DOI: 10.1093/mnrasl/slw063

ISSN: 0035-8711

ISSN: 1365-2966

Fecha

2016-06

Derechos

This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society, ©2016 The authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.

Publicado en

Monthly Notices of the Royal Astronomical Society, 2016, 460(1), L15-L19

Editorial

Oxford University Press

Enlace a la publicación

https://doi.org/10.1093/mnrasl/slw063

Palabras clave

Methods: data analysis

Cosmic background radiation

Resumen/Abstract

The integrated Sachs–Wolfe (ISW) contribution induced on the cosmic microwave background by the presence of a supervoid as the one detected by Szapudi et al. (2015) is reviewed in this letter in order to check whether it could explain the Cold Spot (CS) anomaly. Two different models, previously used for the same purpose, are considered to describe the matter density profile of the void: a top hat function and a compensated profile produced by a Gaussian potential. The analysis shows that, even enabling ellipticity changes or different values for the dark-energy equation of state parameter ω, the ISW contribution due to the presence of the void does not reproduce the properties of the CS.

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This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society, ©2016 The authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.

Excepto si se señala otra cosa, la licencia del ítem se describe como This article has been accepted for publication in Monthly Notices of the Royal Astronomical Society, ©2016 The authors. Published by Oxford University Press on behalf of the Royal Astronomical Society. All rights reserved.