Search results for "Object point"

showing 2 items of 2 documents

A Three-Dimensional Object Point Process for Detection of Cosmic Filaments

2007

Summary We propose to apply an object point process to delineate filaments of the large scale structure in red shift catalogues automatically. We illustrate the feasibility of the idea on an example of the recent 2dF Galaxy Redshift Survey, describe the procedure and characterize the results.

Statistics and Probability2dF Galaxy Redshift SurveyCOSMIC cancer databaseComputer scienceProcess (computing)Survey samplingAstrophysics::Cosmology and Extragalactic AstrophysicsAstrophysicsCosmologyPoint processObject pointRed shiftCalculusStatistics Probability and UncertaintyAstrophysics::Galaxy AstrophysicsJournal of the Royal Statistical Society Series C: Applied Statistics
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Filaments in observed and mock galaxy catalogues

2010

Context. The main feature of the spatial large-scale galaxy distribution is an intricate network of galaxy filaments. Although many attempts have been made to quantify this network, there is no unique and satisfactory recipe for that yet. Aims. The present paper compares the filaments in the real data and in the numerical models, to see if our best models reproduce statistically the filamentary network of galaxies. Methods. We apply an object point process with interactions (the Bisous process) to trace and describe the filamentary network both in the observed samples (the 2dFGRS catalogue) and in the numerical models that have been prepared to mimic the data.We compare the networks. Result…

Physicsstatistical [Methods]Cosmology and Nongalactic Astrophysics (astro-ph.CO):ASTRONOMÍA Y ASTROFÍSICA::Cosmología y cosmogonia::Otras [UNESCO]FOS: Physical scienceslarge [Cosmology]Astronomy and AstrophysicsContext (language use)Scale structure of UniverseAstrophysicsNumerical models:ASTRONOMÍA Y ASTROFÍSICA::Cosmología y cosmogonia [UNESCO]Cosmology : large; Scale structure of Universe; Methods : data analysis; Methods : statisticalGalaxyObject pointSpace and Planetary ScienceUNESCO::ASTRONOMÍA Y ASTROFÍSICA::Cosmología y cosmogonia::OtrasUNESCO::ASTRONOMÍA Y ASTROFÍSICA::Cosmología y cosmogoniadata analysis [Methods]Astrophysics - Cosmology and Nongalactic Astrophysics
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