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

Result code in 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>
Alternative codes found
RIV/00216208:11320/20:10423407
Result on the web
<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>

Result language
angličtina
Original language name
The failure of testing for cosmic opacity via the distance-duality relation
Original language description
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.
Czech name
—
Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10308 - Astronomy (including astrophysics,space science)

Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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