Spectral distortion of the CMB by the cumulative CO emission from galaxies throughout cosmic history

Natalie Mashian; Abraham Loeb; Amiel Sternberg

doi:10.1093/mnrasl/slw027

Spectral distortion of the CMB by the cumulative CO emission from galaxies throughout cosmic history

Natalie Mashian^*, Abraham Loeb, Amiel Sternberg

^*Corresponding author for this work

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

We show that the cumulative CO emission from galaxies throughout cosmic history distorts the spectrum of the cosmic microwave background at a level that is well above the detection limit of future instruments, such as the Primordial Inflation Explorer. The modelled CO signal has a prominent bump in the frequency interval 100-200 GHz, with a characteristic peak intensity of ~2 × 10^-23 Wm^-2 Hz^-1 sr^-1. Most of the CO foreground originates from modest redshifts, z ~ 2-5, and needs to be efficiently removed for more subtle distortions from the earlier Universe to be detected.

Original language	English
Pages (from-to)	L99-L103
Journal	Monthly Notices of the Royal Astronomical Society: Letters
Volume	458
Issue number	1
DOIs	https://doi.org/10.1093/mnrasl/slw027
State	Published - 1 May 2016

Keywords

Cosmic background radiation
Cosmology: theory
Early universe
Intergalactic medium

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title = "Spectral distortion of the CMB by the cumulative CO emission from galaxies throughout cosmic history",

abstract = "We show that the cumulative CO emission from galaxies throughout cosmic history distorts the spectrum of the cosmic microwave background at a level that is well above the detection limit of future instruments, such as the Primordial Inflation Explorer. The modelled CO signal has a prominent bump in the frequency interval 100-200 GHz, with a characteristic peak intensity of ~2 × 10-23 Wm-2 Hz-1 sr-1. Most of the CO foreground originates from modest redshifts, z ~ 2-5, and needs to be efficiently removed for more subtle distortions from the earlier Universe to be detected.",

keywords = "Cosmic background radiation, Cosmology: theory, Early universe, Intergalactic medium",

author = "Natalie Mashian and Abraham Loeb and Amiel Sternberg",

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AU - Mashian, Natalie

AU - Loeb, Abraham

AU - Sternberg, Amiel

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Y1 - 2016/5/1

N2 - We show that the cumulative CO emission from galaxies throughout cosmic history distorts the spectrum of the cosmic microwave background at a level that is well above the detection limit of future instruments, such as the Primordial Inflation Explorer. The modelled CO signal has a prominent bump in the frequency interval 100-200 GHz, with a characteristic peak intensity of ~2 × 10-23 Wm-2 Hz-1 sr-1. Most of the CO foreground originates from modest redshifts, z ~ 2-5, and needs to be efficiently removed for more subtle distortions from the earlier Universe to be detected.

AB - We show that the cumulative CO emission from galaxies throughout cosmic history distorts the spectrum of the cosmic microwave background at a level that is well above the detection limit of future instruments, such as the Primordial Inflation Explorer. The modelled CO signal has a prominent bump in the frequency interval 100-200 GHz, with a characteristic peak intensity of ~2 × 10-23 Wm-2 Hz-1 sr-1. Most of the CO foreground originates from modest redshifts, z ~ 2-5, and needs to be efficiently removed for more subtle distortions from the earlier Universe to be detected.

KW - Cosmic background radiation

KW - Cosmology: theory

KW - Early universe

KW - Intergalactic medium

UR - http://www.scopus.com/inward/record.url?scp=84963591509&partnerID=8YFLogxK

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DO - 10.1093/mnrasl/slw027

M3 - מאמר

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SP - L99-L103

JO - Monthly Notices of the Royal Astronomical Society: Letters

JF - Monthly Notices of the Royal Astronomical Society: Letters

SN - 1745-3925

IS - 1

ER -

Spectral distortion of the CMB by the cumulative CO emission from galaxies throughout cosmic history

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Keywords

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