Matches in SemOpenAlex for { <https://semopenalex.org/work/W1661506703> ?p ?o ?g. }
Showing items 1 to 56 of
56
with 100 items per page.
- W1661506703 abstract "A non-zero cosmological constant is only one of many possible explanations for the observed accelerating expansion of the Universe. Any smoothly distributed, “dark” energy with a significant negative pressure can drive the acceleration. One possible culprit is a dynamical scalar field, but there are many less popular models such as tangled cosmic strings or domain walls. Soon theorists are likely to think up a number of new energies that can accelerate the expansion, meaning that only better observations can solve this question. Dark energy can be parameterized by its equation of state, w = p /ρ, which in the most general form can vary over time. Unlike the CMB, supernova observations cover a range of redshift so they can, in principle, probe the variation in the equation of state of the unknown component. The current SN observations loosely constrain the equation of state to w < −0.6, ruling out non-intercommuting strings and textures ( w = −1/3), but consistent with a cosmological constant ( w = −1). The constraints achievable from future large SN surveys are limited by our ability to understand systematic effects in SN Ia luminosities. But a large sample of supernovae reaching out to z ˜ 2 should at least discriminate between a cosmological constant and a dynamical scalar field as the source of the observed acceleration." @default.
- W1661506703 created "2016-06-24" @default.
- W1661506703 creator A5024387678 @default.
- W1661506703 creator A5037015805 @default.
- W1661506703 date "2005-01-01" @default.
- W1661506703 modified "2023-09-26" @default.
- W1661506703 title "Properties of the Dark Energy" @default.
- W1661506703 cites W1656865051 @default.
- W1661506703 cites W1853767801 @default.
- W1661506703 cites W1975948265 @default.
- W1661506703 cites W2031878893 @default.
- W1661506703 cites W2036482104 @default.
- W1661506703 cites W2049393017 @default.
- W1661506703 cites W2073832139 @default.
- W1661506703 cites W2136068228 @default.
- W1661506703 cites W2146293885 @default.
- W1661506703 cites W2952795974 @default.
- W1661506703 cites W3100792284 @default.
- W1661506703 cites W3102763870 @default.
- W1661506703 cites W3124446788 @default.
- W1661506703 cites W4234933822 @default.
- W1661506703 doi "https://doi.org/10.1017/s007418090021632x" @default.
- W1661506703 hasPublicationYear "2005" @default.
- W1661506703 type Work @default.
- W1661506703 sameAs 1661506703 @default.
- W1661506703 citedByCount "0" @default.
- W1661506703 crossrefType "journal-article" @default.
- W1661506703 hasAuthorship W1661506703A5024387678 @default.
- W1661506703 hasAuthorship W1661506703A5037015805 @default.
- W1661506703 hasConcept C121332964 @default.
- W1661506703 hasConcept C1276947 @default.
- W1661506703 hasConcept C172790937 @default.
- W1661506703 hasConcept C26405456 @default.
- W1661506703 hasConcept C44870925 @default.
- W1661506703 hasConceptScore W1661506703C121332964 @default.
- W1661506703 hasConceptScore W1661506703C1276947 @default.
- W1661506703 hasConceptScore W1661506703C172790937 @default.
- W1661506703 hasConceptScore W1661506703C26405456 @default.
- W1661506703 hasConceptScore W1661506703C44870925 @default.
- W1661506703 hasLocation W16615067031 @default.
- W1661506703 hasOpenAccess W1661506703 @default.
- W1661506703 hasPrimaryLocation W16615067031 @default.
- W1661506703 hasRelatedWork W1618733825 @default.
- W1661506703 hasRelatedWork W1995210538 @default.
- W1661506703 hasRelatedWork W2033876671 @default.
- W1661506703 hasRelatedWork W2092368491 @default.
- W1661506703 hasRelatedWork W2118470197 @default.
- W1661506703 hasRelatedWork W2404733301 @default.
- W1661506703 hasRelatedWork W2888615400 @default.
- W1661506703 hasRelatedWork W2916836741 @default.
- W1661506703 hasRelatedWork W3102243975 @default.
- W1661506703 hasRelatedWork W3103457825 @default.
- W1661506703 isParatext "false" @default.
- W1661506703 isRetracted "false" @default.
- W1661506703 magId "1661506703" @default.
- W1661506703 workType "article" @default.