An observational signal of the void shape correlation and its link to the cosmic web

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dc.careerCiencias Físicas y Matemáticases
dc.category.authoraddeden_US
dc.contributor.authorHoyle, Fiona
dc.contributor.correspondingHoyle, Fiona
dc.countryEcuadores
dc.date.accessioned2023-11-04T21:42:16Z
dc.date.available2023-11-04T21:42:16Z
dc.date.issued2015-04-10
dc.dedication.authorTPes
dc.description.abstractThe shapes of cosmic voids are prone to distortions caused by external tidal forces since their low densities imply a lower internal resistance. This susceptibility of the void shapes to tidal distortions makes them useful as indicators of large-scale tidal and density fields, despite the practical difficulty in defining them. Using the void catalog constructed by Pan et al. from the Seventh Data Release of the Sloan Digital Sky Survey (SDSS DR7), we detect a clear 4s signal of spatial correlations of the void shapes on a scale of - 20 h 1 Mpc and show that the signal is robust against the projection of the void shapes onto the plane of sky. By constructing a simple analytic model for the void shape correlation, within the framework of tidal torque theory, we demonstrate that the void shape correlation function scales linearly with the two-point correlation function of the linear density field. We also find direct observational evidence for the cross-correlation of the void shapes with the large-scale velocity shear field that was linearly reconstructed by Lee et al. from SDSS DR7. We discuss the possibility of using the void shape correlation function to break the degeneracy between the density parameter and the power spectrum amplitude and to independently constrain the neutrino mass as well.en_US
dc.facultyCiencias Exactas y Naturaleses
dc.id.author1750251827
dc.id.type1
dc.identifier.doi10.1088/0004-637X/803/1/45
dc.identifier.issn0004-637X
dc.identifier.urihttps://repositorio.puce.edu.ec/handle/123456789/5925
dc.identifier.urihttp://iopscience.iop.org/article/10.1088/0004-637X/803/1/45/pdf
dc.indexed.databaseScimago Journal Rankes
dc.language.isoen
dc.list.authorsLee, J., Hoyle, F.
dc.magazine.pageRange1-8
dc.magazine.titleThe Astrophysical Journalen_US
dc.magazine.volumeChapter803 (1)
dc.rightsClosedAccessen
dc.statepublisheden_US
dc.subjectModelos matemáticoses
dc.subjectVacíos cósmicoses
dc.subjectModelos matemáticos
dc.subjectVacíos cósmicos
dc.titleAn observational signal of the void shape correlation and its link to the cosmic weben_US
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