464 citations · 5.1k across the 58 of their papers we have counts for
58 papers
Open Clusters as Tracers on Radial Migration of the Galactic Disk
Y. Q. Chen, G. Zhao
Radial migration is an important process in the Galactic disk. A few open clusters show some evidence on this mechanism but there is no systematic study. In this work, we investiga…
The Sloan Digital Sky Survey Quasar Catalog: Fourteenth Data Release
I. Pâris, P. Petitjean, E. Aubourg +38
We present the Data Release 14 Quasar catalog (DR14Q) from the extended Baryon Oscillation Spectroscopic Survey (eBOSS) of the Sloan Digital Sky Survey IV (SDSS-IV). This catalog i…
Using Voids to Unscreen Modified Gravity
B. Falck, Kazuya Koyama, Gong-bo Zhao +1
The Vainshtein mechanism, present in many models of gravity, is very effective at screening dark matter halos such that the fifth force is negligible and general relativity is reco…
Revealing modified gravity signal in matter and halo hierarchical clustering
Wojciech A. Hellwing, Kazuya Koyama, Benjamin Bose +1
We use a set of N-body simulations employing a modified gravity (MG) model with Vainshtein screening to study matter and halo hierarchical clustering. As test-case scenarios we con…
COLA with scale-dependent growth: applications to screened modified gravity models
Hans A. Winther, Kazuya Koyama, Marc Manera +2
We present a general parallelized and easy-to-use code to perform numerical simulations of structure formation using the COLA (COmoving Lagrangian Acceleration) method for cosmolog…
Theoretical Accuracy in Cosmological Growth Estimation
Benjamin Bose, Kazuya Koyama, Wojciech A. Hellwing +2
We elucidate the importance of the consistent treatment of gravity-model specific non-linearities when estimating the growth of cosmological structures from redshift space distorti…
The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: constraining modified gravity
Eva-Maria Mueller, Will Percival, Eric Linder +4
We use baryon acoustic oscillation and redshift space distortion from the completed Baryon Oscillation Spectroscopic Survey, corresponding to data release 12 of the Sloan Digital S…
Clustering of quasars in the First Year of the SDSS-IV eBOSS survey: Interpretation and halo occupation distribution
Sergio A. Rodríguez-Torres, Johan Comparat, Francisco Prada +10
In current and future surveys, quasars play a key role. The new data will extend our knowledge of the Universe as it will be used to better constrain the cosmological model at reds…
The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: combining correlated Gaussian posterior distributions
Ariel G. Sanchez, Jan Niklas Grieb, Salvador Salazar-Albornoz +17
The cosmological information contained in anisotropic galaxy clustering measurements can often be compressed into a small number of parameters whose posterior distribution is well…
The clustering of galaxies in the completed SDSS-III Baryon Oscillation Spectroscopic Survey: Cosmological implications of the Fourier space wedges of the final sample
Jan Niklas Grieb, Ariel G. Sánchez, Salvador Salazar-Albornoz +25
We extract cosmological information from the anisotropic power spectrum measurements from the recently completed Baryon Oscillation Spectroscopic Survey (BOSS), extending the conce…
Redshift Weights for Baryon Acoustic Oscillations : Application to Mock Galaxy Catalogs
Fangzhou Zhu, Nikhil Padmanabhan, Martin White +2
Large redshift surveys capable of measuring the Baryon Acoustic Oscillation (BAO) signal have proven to be an effective way of measuring the distance-redshift relation in cosmology…
Simulation tests of galaxy cluster constraints on chameleon gravity
Harry Wilcox, Robert C. Nichol, Gong-bo Zhao +3
We use two new hydrodynamical simulations of CDM and gravity to test the methodology used by Wilcox et al. 2015 (W15) in constraining the effects of a fifth force on the…
Screening fifth forces in generalized Proca theories
Antonio De Felice, Lavinia Heisenberg, Ryotaro Kase +3
For a massive vector field with derivative self-interactions, the breaking of the gauge invariance allows the propagation of a longitudinal mode in addition to the two transverse m…
Searching for scalar gravitational interactions in current and future cosmological data
Alireza Hojjati, Aaron Plahn, Alex Zucca +4
Modified gravity theories often contain a scalar field of gravitational strength which interacts with matter. We examine constraints on the range and the coupling strength of a sca…
Consistent Modified Gravity Analysis of Anisotropic Galaxy Clustering Using BOSS DR11
Yong-Seon Song, Atsushi Taruya, Eric Linder +6
We analyse the clustering of cosmic large scale structure using a consistent modified gravity perturbation theory, accounting for anisotropic effects along and transverse to the li…
Modified Gravity N-body Code Comparison Project
Hans A. Winther, Fabian Schmidt, Alexandre Barreira +12
Self-consistent -body simulations of modified gravity models are a key ingredient to obtain rigorous constraints on deviations from General Relativity using large-scale st…
Reconstruction of the dark matter-vacuum energy interaction
Yuting Wang, Gong-Bo Zhao, David Wands +2
An interaction between the vacuum energy and dark matter is an intriguing possibility which may offer a way of solving the cosmological constant problem. Adopting a general prescri…
f(R) gravity on non-linear scales: The post-Friedmann expansion and the vector potential
Daniel B Thomas, Marco Bruni, Kazuya Koyama +2
Many modified gravity theories are under consideration in cosmology as the source of the accelerated expansion of the universe and linear perturbation theory, valid on the largest…
Model-independent constraints on dark energy and modified gravity with the SKA
Gong-Bo Zhao, David Bacon, Roy Maartens +2
Employing a nonparametric approach of the principal component analysis (PCA), we forecast the future constraint on the equation of state of dark energy, and on the effective…
Cosmology from HI galaxy surveys with the SKA
Filipe B. Abdalla, Philip Bull, Stefano Camera +8
The Square Kilometer Array (SKA) has the potential to produce galaxy redshift surveys which will be competitive with other state of the art cosmological experiments in the next dec…
Synergy between the Large Synoptic Survey Telescope and the Square Kilometre Array
David Bacon, Sarah Bridle, Filipe B. Abdalla +18
We provide an overview of the science benefits of combining information from the Square Kilometre Array (SKA) and the Large Synoptic Survey Telescope (LSST). We first summarise the…
Measuring redshift-space distortions with future SKA surveys
Alvise Raccanelli, Philip Bull, Stefano Camera +8
The peculiar motion of galaxies can be a particularly sensitive probe of gravitational collapse. As such, it can be used to measure the dynamics of dark matter and dark energy as w…
The Vainshtein Mechanism in the Cosmic Web
Bridget Falck, Kazuya Koyama, Gong-bo Zhao +1
We investigate the dependence of the Vainshtein screening mechanism on the cosmic web morphology of both dark matter particles and halos as determined by ORIGAMI. Unlike chameleon…
Observable physical modes of modified gravity
Alireza Hojjati, Levon Pogosian, Alessandra Silvestri +1
At linear order in cosmological perturbations, departures from the growth in the cosmological standard model can be quantified in terms of two functions of redshift and Fourier…