Impact of cosmic inhomogeneities on SNe observations

Kimmo Kainulainen; Valerio Marra

doi:10.1063/1.3462598

Impact of cosmic inhomogeneities on SNe observations

Kimmo Kainulainen, Valerio Marra

Forskningsinstitutet för fysik

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Sammanfattning

We study the impact of cosmic inhomogeneities on the interpretation of SNe observations. We build an inhomogeneous universe model that can confront supernova data and yet is reasonably well compatible with the Copernican Principle. Our model combines a relatively small local void, that gives apparent acceleration at low redshifts, with a meatball model that gives sizeable lensing (dimming) at high redshifts. Together these two elements, which focus on different effects of voids on the data, allow the model to mimic the concordance model.

Originalspråk	engelska
Tidskrift	AIP Conference Proceedings
Volym	1241
Nummer	1
Sidor (från-till)	1043-1050
Antal sidor	8
ISSN	0094-243X
DOI	https://doi.org/10.1063/1.3462598
Status	Publicerad - 2010
MoE-publikationstyp	A4 Artikel i en konferenspublikation
Evenemang	Unknown host publication - , Förenta Staterna (USA) Varaktighet: 1 jan. 1800 → …

Bibliografisk information

8 pages, 6 figures; to be published in the AIP proceedings of the
'Invisible Universe International Conference', UNESCO-Paris, June 29-July 3,
2009
Volume: 1241

Vetenskapsgrenar

114 Fysik

Åtkomst av dokument

10.1063/1.3462598

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Citera det här

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abstract = "We study the impact of cosmic inhomogeneities on the interpretation of SNe observations. We build an inhomogeneous universe model that can confront supernova data and yet is reasonably well compatible with the Copernican Principle. Our model combines a relatively small local void, that gives apparent acceleration at low redshifts, with a meatball model that gives sizeable lensing (dimming) at high redshifts. Together these two elements, which focus on different effects of voids on the data, allow the model to mimic the concordance model.",

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