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Future Constraints on Angle-Dependent Non-Gaussianity from Large Radio Surveys
Alvise Raccanelli, Maresuke Shiraishi, Nicola Bartolo +5
We investigate how well future large-scale radio surveys could measure different shapes of primordial non-Gaussianity; in particular we focus on angle-dependent non-Gaussianity ari…
Antisymmetric galaxy cross-correlations as a cosmological probe
Liang Dai, Marc Kamionkowski, Ely D. Kovetz +2
The auto-correlation between two members of a galaxy population is symmetric under the interchange of the two galaxies being correlated. The cross-correlation between two different…
Interloper bias in future large-scale structure surveys
Anthony R. Pullen, Christopher M. Hirata, Olivier Dore +1
Next-generation spectroscopic surveys will map the large-scale structure of the observable universe, using emission line galaxies as tracers. While each survey will map the sky wit…
Cosmological Measurements with General Relativistic Galaxy Correlations
Alvise Raccanelli, Francesco Montanari, Daniele Bertacca +2
We investigate the cosmological dependence and the constraining power of large-scale galaxy correlations, including all redshift-distortions, wide-angle, lensing and gravitational…
Detecting the integrated Sachs-Wolfe effect with high-redshift 21-cm surveys
Alvise Raccanelli, Ely Kovetz, Liang Dai +1
We investigate the possibility to detect the integrated Sachs-Wolfe (ISW) effect by cross-correlating 21-cm surveys at high redshifts with galaxies, in a way similar to the usual C…
Cosmology on the Largest Scales with the SKA
S. Camera, A. Raccanelli, P. Bull +10
The study of the Universe on ultra-large scales is one of the major science cases for the Square Kilometre Array (SKA). The SKA will be able to probe a vast volume of the cosmos, t…
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…
Measuring baryon acoustic oscillations with future SKA surveys
Philip Bull, Stefano Camera, Alvise Raccanelli +4
The imprint of baryon acoustic oscillations (BAO) in large-scale structure can be used as a standard ruler for mapping out the cosmic expansion history, and hence for testing cosmo…
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…
Cosmology with SKA Radio Continuum Surveys
Matt J. Jarvis, David Bacon, Chris Blake +5
Radio continuum surveys have, in the past, been of restricted use in cosmology. Most studies have concentrated on cross-correlations with the cosmic microwave background to detect…
Real time cosmology - A direct measure of the expansion rate of the Universe
H. -R. Klöckner, D. Obreschkow, C. Martins +6
In recent years cosmology has undergone a revolution, with precise measurements of the microwave background radiation, large galaxy redshift surveys, and the discovery of the recen…
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…
Testing foundations of modern cosmology with SKA all-sky surveys
Dominik J. Schwarz, David Bacon, Song Chen +7
Continuum and HI surveys with the Square Kilometre Array (SKA) will allow us to probe some of the most fundamental assumptions of modern cosmology, including the Cosmological Princ…