ITP OpenIR  > 理论物理所科研产出  > SCI论文
Bucher, M; Racine, B; van Tent, B; Bucher, M (reprint author), Univ Paris Diderot, CNRS IN2P3, CEA Irfu, Observ Paris,Sorbonne Paris Cite,APC,AstroParticu, 10 Rue Alice Domon & Leonie Duquet, F-75205 Paris 13, France.
The binned bispectrum estimator: template-based and non-parametric CMB non-Gaussianity searches
Source PublicationJOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS
Language英语
KeywordCmbr Experiments Cmbr Theory Non-gaussianity
AbstractWe describe the details of the binned bispectrum estimator as used for the official 2013 and 2015 analyses of the temperature and polarization CMB maps from the ESA Planck satellite. The defining aspect of this estimator is the determination of a map bispectrum (3-point correlation function) that has been binned in harmonic space. For a parametric determination of the non-Gaussianity in the map (the so-called f(NL), parameters), one takes the inner product of this binned bispectrum with theoretically motivated templates. However, as a complementary approach one can also smooth the binned bispectrum using a variable smoothing scale in order to suppress noise and make coherent features stand out above the noise. This allows one to look in a model-independent way for any statistically significant bispectral signal. This approach is useful for characterizing the bispectral shape of the galactic foreground emission, for which a theoretical prediction of the bispectral anisotropy is lacking, and for detecting a serendipitous primordial signal, for which a theoretical template has not yet been put forth. Both the template-based and the non-parametric approaches are described in this paper.
2016
Issue5Pages:55
Subject AreaAstronomy & Astrophysics ; Physics
DOIhttp://dx.doi.org/10.1088/1475-7516/2016/05/055
Indexed BySCI
Funding OrganizationFrench Ministere de l'enseignement superieur et de la recherche ; French Ministere de l'enseignement superieur et de la recherche ; French Ministere de l'enseignement superieur et de la recherche ; French Ministere de l'enseignement superieur et de la recherche ; Research Council of Norway ; Research Council of Norway ; Research Council of Norway ; Research Council of Norway
Citation statistics
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/21669
Collection理论物理所科研产出_SCI论文
Corresponding AuthorBucher, M (reprint author), Univ Paris Diderot, CNRS IN2P3, CEA Irfu, Observ Paris,Sorbonne Paris Cite,APC,AstroParticu, 10 Rue Alice Domon & Leonie Duquet, F-75205 Paris 13, France.
Recommended Citation
GB/T 7714
Bucher, M,Racine, B,van Tent, B,et al. The binned bispectrum estimator: template-based and non-parametric CMB non-Gaussianity searches[J]. JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS,2016(5):55.
APA Bucher, M,Racine, B,van Tent, B,&Bucher, M .(2016).The binned bispectrum estimator: template-based and non-parametric CMB non-Gaussianity searches.JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS(5),55.
MLA Bucher, M,et al."The binned bispectrum estimator: template-based and non-parametric CMB non-Gaussianity searches".JOURNAL OF COSMOLOGY AND ASTROPARTICLE PHYSICS .5(2016):55.
Files in This Item:
File Name/Size DocType Version Access License
The binned bispectru(3987KB)期刊论文出版稿开放获取CC BY-NC-SAApplication Full Text
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Bucher, M]'s Articles
[Racine, B]'s Articles
[van Tent, B]'s Articles
Baidu academic
Similar articles in Baidu academic
[Bucher, M]'s Articles
[Racine, B]'s Articles
[van Tent, B]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Bucher, M]'s Articles
[Racine, B]'s Articles
[van Tent, B]'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.