IHEP OpenIR  > 粒子天体物理中心
What do we know about cosmography
Zhang MJ(张明建); Li H(李虹); Zhang, MJ; Li, H; Xia, JQ
2017
Source PublicationEUROPEAN PHYSICAL JOURNAL C
ISSN1434-6044
EISSN1434-6052
Volume77Issue:7Pages:434
SubtypeArticle
AbstractIn the present paper, we investigate the cosmographic problem using the bias-variance trade-off. We find that both the z-redshift and the y = z/(1 + z)-redshift can present a small bias estimation. It means that the cosmography can describe the supernova data more accurately. Minimizing risk, it suggests that cosmography up to the second order is the best approximation. Forecasting the constraint from future measurements, we find that future supernova and redshift drift can significantly improve the constraint, thus having the potential to solve the cosmographic problem. We also exploit the values of cosmography on the deceleration parameter and equation of state of dark energy w(z). We find that supernova cosmography cannot give stable estimations on them. However, much useful information was obtained, such as that the cosmography favors a complicated dark energy with varying w( z), and the derivative dw/dz < 0 for low redshift. The cosmography is helpful to model the dark energy.
DOI10.1140/epjc/s10052-017-5005-4
WOS KeywordDARK-ENERGY CONSTRAINTS ; EQUATION-OF-STATE ; COSMIC ACCELERATION ; LUMINOSITY DISTANCE ; SUPERNOVA ; REDSHIFT ; UNIVERSE ; DECELERATION ; STATEFINDER ; COSMOLOGY
Indexed BySCI ; SCOPUS ; ADS ; INSPIREHEP
Language英语
WOS Research AreaPhysics
WOS SubjectPhysics, Particles & Fields
WOS IDWOS:000404488400003
ADS Bibcode2017EPJC...77..434Z
ADS URLhttps://ui.adsabs.harvard.edu/abs/2017EPJC...77..434Z
ADS CITATIONShttps://ui.adsabs.harvard.edu/abs/2017EPJC...77..434Z/citations
AXRIV CODE161
inspireid1414583
inspireURLhttps://inspirehep.net/record/1414583
Citation statistics
Cited Times:29 [ADS]
Document Type期刊论文
Identifierhttp://ir.ihep.ac.cn/handle/311005/284266
Collection粒子天体物理中心
Affiliation中国科学院高能物理研究所
First Author AffilicationInstitute of High Energy
Recommended Citation
GB/T 7714
Zhang MJ,Li H,Zhang, MJ,et al. What do we know about cosmography[J]. EUROPEAN PHYSICAL JOURNAL C,2017,77(7):434.
APA 张明建,李虹,Zhang, MJ,Li, H,&Xia, JQ.(2017).What do we know about cosmography.EUROPEAN PHYSICAL JOURNAL C,77(7),434.
MLA 张明建,et al."What do we know about cosmography".EUROPEAN PHYSICAL JOURNAL C 77.7(2017):434.
Files in This Item:
File Name/Size DocType Version Access License
20170039.pdf(1090KB)期刊论文出版稿限制开放CC BY-NC-SAApplication Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[张明建]'s Articles
[李虹]'s Articles
[Zhang, MJ]'s Articles
Baidu academic
Similar articles in Baidu academic
[张明建]'s Articles
[李虹]'s Articles
[Zhang, MJ]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[张明建]'s Articles
[李虹]'s Articles
[Zhang, MJ]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.