71 citations · 244 across the 7 of their papers we have counts for
7 papers · 1 filter
Improving baryon acoustic oscillation measurement with the combination of cosmic voids and galaxies
Cheng Zhao, Chia-Hsun Chuang, Francisco-Shu Kitaura +6
We develop a methodology to optimise the measurement of Baryon Acoustic Oscillation (BAO) from a given galaxy sample. In our previous work, we demonstrated that one can measure BAO…
Baryon Acoustic Oscillation detections from the clustering of massive halos and different density region tracers in TianNu simulation
Yu Liu, Yu Liang, Hao-Ran Yu +3
The Baryon Acoustic Oscillations (BAO) refer to the ripples of material density in the Universe. As the most direct density tracers in the universe, galaxies have been commonly use…
Effect of Massive Neutrinos on the Position of Cold Dark Matter Halo: Revealed via Delaunay Triangulation Void
Jian Qin, Yu Liang, Cheng Zhao +3
Using cosmological -body simulation which coevolves cold dark matter (CDM) and neutrino particles, we discover the local effect of massive neutrinos on the spatial distribution…
Linear redshift space distortions for cosmic voids based on galaxies in redshift space
Chia-Hsun Chuang, Francisco-Shu Kitaura, Yu Liang +4
Cosmic voids found in galaxy surveys are defined based on the galaxy distribution in redshift space. We show that the large scale distribution of voids in redshift space traces the…
Measuring Baryon Acoustic Oscillations from the clustering of voids
Yu Liang, Cheng Zhao, Chia-Hsun Chuang +2
We investigate the necessary methodology to optimally measure the baryon acoustic oscillation (BAO) signal, from voids based on galaxy redshift catalogues. To this end, we study th…
DIVE in the cosmic web: voids with Delaunay Triangulation from discrete matter tracer distributions
Cheng Zhao, Charling Tao, Yu Liang +2
We present a novel parameter-free cosmological void finder (\textsc{dive}, Delaunay TrIangulation Void findEr) based on Delaunay Triangulation (DT), which efficiently computes the…
Signatures of the Primordial Universe from Its Emptiness: Measurement of Baryon Acoustic Oscillations from Minima of the Density Field
Francisco-Shu Kitaura, Chia-Hsun Chuang, Yu Liang +14
Sound waves from the primordial fluctuations of the Universe imprinted in the large-scale structure, called baryon acoustic oscillations (BAOs), can be used as standard rulers to m…