Constraining cosmology with the cosmic microwave and infrared backgrounds correlation

Kód výsledku v IS VaVaI

RIV/68378271:_____/19:00504729 - isvavai.cz

Výsledek na webu

http://hdl.handle.net/11104/0296302

DOI - Digital Object Identifier

10.1051/0004-6361/201833765

Jazyk výsledku

angličtina

Název v původním jazyce

Constraining cosmology with the cosmic microwave and infrared backgrounds correlation

Popis výsledku v původním jazyce

We explore the use of the cosmic infrared background (CIB) as a tracer of the large scale structures for cross-correlating with the cosmic microwave background (CMB) and exploit the integrated Sachs–Wolfe (ISW) effect. We used an improved linear CIB model from our previous work and derived the theoretical CIB×ISW cross-correlation for different Planck HFI frequencies (217, 353, 545 and 857 GHz) and IRAS (3000 GHz). As expected, we predict a positive cross-correlation between the CIB and the CMB whose amplitude decreases rapidly at small scales. We perform a signal-to-noise ratio (S/N) analysis of the predicted cross-correlation. In the ideal case when the cross-correlation is obtained over 70% (40%) of the sky without residual contaminants (e.g. galactic dust) in maps, the S/N ranges from 4.2 to 5.6 (3.2 to 4.3), the highest S/N comes from 857 GHz.n

Název v anglickém jazyce

Constraining cosmology with the cosmic microwave and infrared backgrounds correlation

Popis výsledku anglicky

We explore the use of the cosmic infrared background (CIB) as a tracer of the large scale structures for cross-correlating with the cosmic microwave background (CMB) and exploit the integrated Sachs–Wolfe (ISW) effect. We used an improved linear CIB model from our previous work and derived the theoretical CIB×ISW cross-correlation for different Planck HFI frequencies (217, 353, 545 and 857 GHz) and IRAS (3000 GHz). As expected, we predict a positive cross-correlation between the CIB and the CMB whose amplitude decreases rapidly at small scales. We perform a signal-to-noise ratio (S/N) analysis of the predicted cross-correlation. In the ideal case when the cross-correlation is obtained over 70% (40%) of the sky without residual contaminants (e.g. galactic dust) in maps, the S/N ranges from 4.2 to 5.6 (3.2 to 4.3), the highest S/N comes from 857 GHz.n

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10308 - Astronomy (including astrophysics,space science)

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Astronomy & Astrophysics

ISSN

1432-0746

e-ISSN

—

Svazek periodika

621

Číslo periodika v rámci svazku

Jan

Stát vydavatele periodika

FR - Francouzská republika

Počet stran výsledku

16

Strana od-do

1-19

Kód UT WoS článku

000454875500006

EID výsledku v databázi Scopus

2-s2.0-85059629497