Uncertainty on w from large-scale structure
We find that if we live at the centre of an inhomogeneity with total density contrast |δ0| ≃ 0.1-0.15, dark energy is not a cosmological constant at 95 per cent confidence level. Observational constraints on the equation of state of dark energy, w, depend strongly on the local matter density around...
Gespeichert in:
| Hauptverfasser: | , , |
|---|---|
| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
12 March 2013
|
| In: |
Monthly notices of the Royal Astronomical Society
Year: 2013, Jahrgang: 431, Heft: 2, Pages: 1891-1902 |
| ISSN: | 1365-2966 |
| DOI: | 10.1093/mnras/stt309 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1093/mnras/stt309
|
| Verfasserangaben: | Valerio Marra, Mikko Pääkkönen and Wessel Valkenburg |
MARC
| LEADER | 00000caa a2200000 c 4500 | ||
|---|---|---|---|
| 001 | 1761135260 | ||
| 003 | DE-627 | ||
| 005 | 20240414193208.0 | ||
| 007 | cr uuu---uuuuu | ||
| 008 | 210623s2013 xx |||||o 00| ||eng c | ||
| 024 | 7 | |a 10.1093/mnras/stt309 |2 doi | |
| 035 | |a (DE-627)1761135260 | ||
| 035 | |a (DE-599)KXP1761135260 | ||
| 035 | |a (OCoLC)1341416911 | ||
| 040 | |a DE-627 |b ger |c DE-627 |e rda | ||
| 041 | |a eng | ||
| 084 | |a 29 |2 sdnb | ||
| 100 | 1 | |a Marra, Valerio |e VerfasserIn |0 (DE-588)1038777429 |0 (DE-627)766452085 |0 (DE-576)392817624 |4 aut | |
| 245 | 1 | 0 | |a Uncertainty on w from large-scale structure |c Valerio Marra, Mikko Pääkkönen and Wessel Valkenburg |
| 246 | 3 | 3 | |a Uncertainty on omega from large-scale structure |
| 264 | 1 | |c 12 March 2013 | |
| 300 | |a 12 | ||
| 336 | |a Text |b txt |2 rdacontent | ||
| 337 | |a Computermedien |b c |2 rdamedia | ||
| 338 | |a Online-Ressource |b cr |2 rdacarrier | ||
| 500 | |a Gesehen am 23.06.2021 | ||
| 520 | |a We find that if we live at the centre of an inhomogeneity with total density contrast |δ0| ≃ 0.1-0.15, dark energy is not a cosmological constant at 95 per cent confidence level. Observational constraints on the equation of state of dark energy, w, depend strongly on the local matter density around the observer. We model the local inhomogeneity with an exact spherically symmetric solution which features a pressureless matter component and a dark-energy fluid with constant equation of state and negligible sound speed, which reaches a homogeneous solution at finite radius. We fit this model to observations of the local expansion rate, distant supernovae and the cosmic microwave background. We conclude that the possible uncertainty from large-scale structure has to be taken into account if one wants to progress towards not just precision but also accurate cosmology. | ||
| 700 | 1 | |a Pääkkönen, Mikko |e VerfasserIn |0 (DE-588)1168655293 |0 (DE-627)103242804X |0 (DE-576)511678983 |4 aut | |
| 700 | 1 | |a Valkenburg, Wessel |d 1982- |e VerfasserIn |0 (DE-588)1084347415 |0 (DE-627)848521595 |0 (DE-576)456292020 |4 aut | |
| 773 | 0 | 8 | |i Enthalten in |a Royal Astronomical Society |t Monthly notices of the Royal Astronomical Society |d Oxford : Oxford Univ. Press, 1827 |g 431(2013), 2, Seite 1891-1902 |h Online-Ressource |w (DE-627)314059164 |w (DE-600)2016084-7 |w (DE-576)090955420 |x 1365-2966 |7 nnas |
| 773 | 1 | 8 | |g volume:431 |g year:2013 |g number:2 |g pages:1891-1902 |g extent:12 |a Uncertainty on w from large-scale structure |
| 856 | 4 | 0 | |u https://doi.org/10.1093/mnras/stt309 |x Verlag |x Resolving-System |z lizenzpflichtig |3 Volltext |
| 951 | |a AR | ||
| 992 | |a 20210623 | ||
| 993 | |a Article | ||
| 994 | |a 2013 | ||
| 998 | |g 1038777429 |a Marra, Valerio |m 1038777429:Marra, Valerio |d 130000 |d 130300 |e 130000PM1038777429 |e 130300PM1038777429 |k 0/130000/ |k 1/130000/130300/ |p 1 |x j | ||
| 999 | |a KXP-PPN1761135260 |e 3940983608 | ||
| BIB | |a Y | ||
| SER | |a journal | ||
| JSO | |a {"title":[{"title":"Uncertainty on w from large-scale structure","title_sort":"Uncertainty on w from large-scale structure"}],"person":[{"family":"Marra","given":"Valerio","roleDisplay":"VerfasserIn","display":"Marra, Valerio","role":"aut"},{"family":"Pääkkönen","given":"Mikko","display":"Pääkkönen, Mikko","roleDisplay":"VerfasserIn","role":"aut"},{"given":"Wessel","family":"Valkenburg","role":"aut","display":"Valkenburg, Wessel","roleDisplay":"VerfasserIn"}],"titleAlt":[{"title":"Uncertainty on omega from large-scale structure"}],"recId":"1761135260","language":["eng"],"type":{"bibl":"article-journal","media":"Online-Ressource"},"note":["Gesehen am 23.06.2021"],"id":{"doi":["10.1093/mnras/stt309"],"eki":["1761135260"]},"origin":[{"dateIssuedKey":"2013","dateIssuedDisp":"12 March 2013"}],"name":{"displayForm":["Valerio Marra, Mikko Pääkkönen and Wessel Valkenburg"]},"relHost":[{"title":[{"title":"Monthly notices of the Royal Astronomical Society","title_sort":"Monthly notices of the Royal Astronomical Society"}],"part":{"pages":"1891-1902","issue":"2","year":"2013","extent":"12","text":"431(2013), 2, Seite 1891-1902","volume":"431"},"pubHistory":["1.1827 -"],"language":["eng"],"corporate":[{"role":"aut","roleDisplay":"VerfasserIn","display":"Royal Astronomical Society"}],"recId":"314059164","note":["Gesehen am 15.01.2018"],"type":{"bibl":"periodical","media":"Online-Ressource"},"disp":"Royal Astronomical SocietyMonthly notices of the Royal Astronomical Society","id":{"issn":["1365-2966"],"eki":["314059164"],"doi":["10.1111/(ISSN)1365-2966"],"zdb":["2016084-7"]},"origin":[{"publisherPlace":"Oxford ; Oxford [u.a.] ; Oxford [u.a.]","dateIssuedDisp":"1827-","dateIssuedKey":"1827","publisher":"Oxford Univ. Press ; Blackwell ; Wiley-Blackwell"}],"physDesc":[{"extent":"Online-Ressource"}]}],"physDesc":[{"extent":"12 S."}]} | ||
| SRT | |a MARRAVALERUNCERTAINT1220 | ||