Mostrar el registro sencillo del ítem
dc.contributor.author
Dávila Kurbán, Federico
dc.contributor.author
Sánchez, Guillermo Ariel
dc.contributor.author
Lares Harbin Latorre, Marcelo
dc.contributor.author
Ruiz, Andrés Nicolás
dc.date.available
2022-09-26T11:38:20Z
dc.date.issued
2021-10
dc.identifier.citation
Dávila Kurbán, Federico; Sánchez, Guillermo Ariel; Lares Harbin Latorre, Marcelo; Ruiz, Andrés Nicolás; Improved two-point correlation function estimates using glass-like distributions as a reference sample; Oxford University Press; Monthly Notices of the Royal Astronomical Society; 506; 4; 10-2021; 4667-4675
dc.identifier.issn
0035-8711
dc.identifier.uri
http://hdl.handle.net/11336/170348
dc.description.abstract
All estimators of the two-point correlation function are based on a random catalogue, a set of points with no intrinsic clustering following the selection function of a survey. High-accuracy estimates require the use of large random catalogues, which imply a high computational cost. We propose to replace the standard random catalogues by glass-like point distributions or glass catalogues whose power spectrum P(k) â i k4 exhibits significantly less power on scales larger than the mean interparticle separation than a Poisson distribution with the same number of points. We show that these distributions can be obtained by iteratively applying the technique of Zeldovich reconstruction commonly used in studies of baryon acoustic oscillations (BAO). We provide a modified version of the widely used Landy-Szalay estimator of the correlation function adapted to the use of glass catalogues and compare its performance with the results obtained using random samples. Our results show that glass-like samples do not add any bias with respect to the results obtained using Poisson distributions. On scales larger than the mean interparticle separation of the glass catalogues, the modified estimator leads to a significant reduction of the variance of the Legendre multipoles ζíi(s) with respect to the standard Landy-Szalay results with the same number of points. The size of the glass catalogue required to achieve a given accuracy in the correlation function is significantly smaller than when using random samples. Their use could help us to drastically reduce the computational cost of configuration-space clustering analysis of future surveys while maintaining high-accuracy requirements.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Oxford University Press
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
GALAXIES: STATISTICS
dc.subject
LARGE-SCALE STRUCTURE OF UNIVERSE
dc.subject
METHODS: ANALYTICAL
dc.subject
METHODS: STATISTICAL
dc.subject.classification
Astronomía
dc.subject.classification
Ciencias Físicas
dc.subject.classification
CIENCIAS NATURALES Y EXACTAS
dc.title
Improved two-point correlation function estimates using glass-like distributions as a reference sample
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2022-09-21T13:53:33Z
dc.identifier.eissn
1365-2966
dc.journal.volume
506
dc.journal.number
4
dc.journal.pagination
4667-4675
dc.journal.pais
Reino Unido
dc.journal.ciudad
Oxford
dc.description.fil
Fil: Dávila Kurbán, Federico. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina
dc.description.fil
Fil: Sánchez, Guillermo Ariel. Institut Max Planck Fuer Gesellschaft. Max Planck Institute For Extraterrestrial Physics.; Alemania
dc.description.fil
Fil: Lares Harbin Latorre, Marcelo. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina
dc.description.fil
Fil: Ruiz, Andrés Nicolás. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Astronomía Teórica y Experimental. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba. Instituto de Astronomía Teórica y Experimental; Argentina. Universidad Nacional de Córdoba. Observatorio Astronómico de Córdoba; Argentina
dc.journal.title
Monthly Notices of the Royal Astronomical Society
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/mnras/article/506/4/4667/6298237
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1093/mnras/stab1622
Archivos asociados