The failure of testing for cosmic opacity via the distance-duality relation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985530%3A_____%2F20%3A00531283" target="_blank" >RIV/67985530:_____/20:00531283 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/00216208:11320/20:10423407

Výsledek na webu

<a href="https://academic.oup.com/mnras/article/497/1/378/5867784" target="_blank" >https://academic.oup.com/mnras/article/497/1/378/5867784</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1093/mnras/staa1936" target="_blank" >10.1093/mnras/staa1936</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The failure of testing for cosmic opacity via the distance-duality relation

Popis výsledku v původním jazyce

The distance-duality relation (DDR) between the luminosity distance D-L and the angular diameter distance D-A is viewed as a powerful tool for testing for the opacity of the Universe, being independent of any cosmological model. It was applied by many authors, who mostly confirm its validity and report a negligible opacity of the Universe. Nevertheless, a thorough analysis reveals that applying the DDR in cosmic opacity tests is tricky. Its applicability is strongly limited because of a non-unique interpretation of the D-L data in terms of cosmic opacity and a rather low accuracy and deficient extent of currently available D-A data. Moreover, authors usually assume that cosmic opacity is frequency independent and parametrize it in their tests by a prescribed phenomenological function. In this way, they only prove that cosmic opacity does not follow their assumptions. As a consequence, no convincing evidence of transparency of the universe using the DDR has so far been presented.

Název v anglickém jazyce

The failure of testing for cosmic opacity via the distance-duality relation

Popis výsledku anglicky

The distance-duality relation (DDR) between the luminosity distance D-L and the angular diameter distance D-A is viewed as a powerful tool for testing for the opacity of the Universe, being independent of any cosmological model. It was applied by many authors, who mostly confirm its validity and report a negligible opacity of the Universe. Nevertheless, a thorough analysis reveals that applying the DDR in cosmic opacity tests is tricky. Its applicability is strongly limited because of a non-unique interpretation of the D-L data in terms of cosmic opacity and a rather low accuracy and deficient extent of currently available D-A data. Moreover, authors usually assume that cosmic opacity is frequency independent and parametrize it in their tests by a prescribed phenomenological function. In this way, they only prove that cosmic opacity does not follow their assumptions. As a consequence, no convincing evidence of transparency of the universe using the DDR has so far been presented.

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

2020

Kód důvěrnosti údajů

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

Název periodika

Monthly Notices of the Royal Astronomical Society

ISSN

0035-8711

e-ISSN

—

Svazek periodika

497

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

11

Strana od-do

378-388

Kód UT WoS článku

000574919600027

EID výsledku v databázi Scopus

2-s2.0-85096991667