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Supernova constraints and systematic uncertainties from the first three years of the Supernova Legacy Survey

Abstract:

We combine high-redshift Type Ia supernovae from the first three years of the Supernova Legacy Survey (SNLS) with other supernova (SN) samples, primarily at lower redshifts, to form a high-quality joint sample of 472 SNe (123 low-z, 93 SDSS, 242 SNLS, and 14 Hubble Space Telescope). SN data alone require cosmic acceleration at >99.999% confidence, including systematic effects. For the dark energy equation of state parameter (assumed constant out to at least z = 1.4) in a flat universe, we ...

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Publisher copy:
10.1088/0067-0049/192/1/1

Authors


Sullivan, M More by this author
Regnault, N More by this author
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Journal:
Astrophysical Journal, Supplement Series
Volume:
192
Issue:
1
Publication date:
2011-01-05
DOI:
ISSN:
0067-0049
URN:
uuid:acfbebfe-1ea1-454a-a5b7-d2a89ec23de1
Source identifiers:
161852
Local pid:
pubs:161852

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