English
 
User Manual Privacy Policy Disclaimer Contact us
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Direct Minkowski Functional analysis of large redshift surveys: a new high-speed code tested on the LRG SDSS-DR7 catalogue

Wiegand, A., Buchert, T., & Ostermann, M. (2014). Direct Minkowski Functional analysis of large redshift surveys: a new high-speed code tested on the LRG SDSS-DR7 catalogue. Monthly Notices of the Royal Astronomical Society, 443(1), 241-259. doi:10.1093/mnras/stu1118.

Item is

Basic

show hide
Item Permalink: http://hdl.handle.net/11858/00-001M-0000-0014-A94B-6 Version Permalink: http://hdl.handle.net/11858/00-001M-0000-0023-D075-6
Genre: Journal Article

Files

show Files
hide Files
:
1311.3661.pdf (Preprint), 3MB
Name:
1311.3661.pdf
Description:
File downloaded from arXiv at 2013-11-19 11:05
Visibility:
Public
MIME-Type / Checksum:
application/pdf / [MD5]
Technical Metadata:
Copyright Date:
-
Copyright Info:
-
:
MNRAS-2014-Wiegand-241-59.pdf (Any fulltext), 5MB
Name:
MNRAS-2014-Wiegand-241-59.pdf
Description:
-
Visibility:
Public
MIME-Type / Checksum:
application/pdf / [MD5]
Technical Metadata:
Copyright Date:
-
Copyright Info:
-
License:
-

Locators

show

Creators

show
hide
 Creators:
Wiegand, Alexander1, Author              
Buchert, Thomas, Author
Ostermann, Matthias, Author
Affiliations:
1Geometric Analysis and Gravitation, AEI-Golm, MPI for Gravitational Physics, Max Planck Society, ou_24012              

Content

show
hide
Free keywords: Astrophysics, Cosmology and Extragalactic Astrophysics, astro-ph.CO
 Abstract: As deeper galaxy catalogues are soon to come, it becomes even more important to measure large-scale fluctuations in the catalogues with robust statistics that cover all moments of the galaxy distribution. In this paper we reinforce a direct analysis of galaxy data by employing the Germ-Grain method to calculate the family of Minkowski Functionals. We introduce a new code, suitable for the analysis of large data sets without smoothing and without the construction of excursion sets. We provide new tools to measure correlation properties, putting emphasis on explicitly isolating non-Gaussian correlations with the help of integral--geometric relations. As a first application we present the analysis of large-scale fluctuations in the LRG sample of SDSS DR7 data. We find significant (more than 2-sigma) deviations from the simulated mock catalogues on samples as large as $500h^{-1}$Mpc and $700h^{-1}$Mpc, respectively, and we investigate possible sources of these deviations.

Details

show
hide
Language(s):
 Dates: 2013-11-142013-11-192014
 Publication Status: Published in print
 Pages: 18 pages, 14 figures, submitted
 Publishing info: -
 Table of Contents: -
 Rev. Method: -
 Identifiers: arXiv: 1311.3661
DOI: 10.1093/mnras/stu1118
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Monthly Notices of the Royal Astronomical Society
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: Oxford : Blackwell Science
Pages: - Volume / Issue: 443 (1) Sequence Number: - Start / End Page: 241 - 259 Identifier: ISSN: 1365-8711
CoNE: /journals/resource/1000000000024150