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Ensemble Average of Three-Dimensional Minkowski Tensors of a Gaussian Random Field in Redshift Space
Stephen Appleby, Joby P. K., Pravabati Chingangbam +1
We present the ensemble expectation values for the translation invariant, rank-2 Minkowski tensors in three-dimensions, for a linearly redshift space distorted Gaussian random fiel…
Isolated dark matter deprived galaxies in hydrodynamical simulations: real objects or artefacts?
Christoph Saulder, Owain Snaith, Changbom Park +1
We searched for isolated dark matter deprived galaxies within several state-of-the-art hydrodynamical simulations: Illustris, IllustrisTNG, EAGLE, and Horizon-AGN and found a handf…
Distance measurements to early-type galaxies by improving the fundamental plane
Christoph Saulder, Ian Steer, Owain Snaith +1
Using SDSS DR15 to its full extent, we derived fundamental plane distances to over 317 000 early-type galaxies up to a redshift of 0.4. In addition to providing the largest sample…
Alcock-Paczynski Test with the Evolution of Redshift-Space Galaxy Clustering Anisotropy
Hyunbae Park, Changbom Park, Cristiano G. Sabiu +5
We develop an improved Alcock-Paczynski (AP) test method that uses the redshift-space two-point correlation function (2pCF) of galaxies. Cosmological constraints can be obtained by…
Constraining Cosmology with Big Data Statistics of Cosmological Graphs
Sungryong Hong, Donghui Jeong, Ho Seong Hwang +7
By utilizing large-scale graph analytic tools implemented in the modern Big Data platform, Apache Spark, we investigate the topological structure of gravitational clustering in fiv…