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Dissecting the thermal Sunyaev-Zeldovich-gravitational lensing cross-correlation with hydrodynamical simulations
Alireza Hojjati, Ian G. McCarthy, Joachim Harnois-Deraps +4
We use the cosmo-OWLS suite of cosmological hydrodynamical simulations, which includes different galactic feedback models, to predict the cross-correlation signal between weak grav…
A dynamical model of the local cosmic expansion
Jorge Peñarrubia, Yin-Zhe Ma, Matthew G. Walker +1
We combine the equations of motion that govern the dynamics of galaxies in the local volume with Bayesian techniques in order to fit orbits to published distances and velocities of…
Velocities hasten to tell us about the Universe
Yin-Zhe Ma, Douglas Scott
The peculiar velocities of galaxies are driven by gravity, and hence hold the promise of probing details of how gravity forms structures. In particular it is possible to constrain…
Precision of future experiments measuring primordial tensor fluctuation
Yi Wang, Yin-Zhe Ma
Recently the second phase of Background Imaging of Cosmic Extragalactic Polarization (BICEP2) claimed a detection of the tensor-to-scalar ratio () of primordial fluctuation at $…
Reconstructing the Local Potential of Inflation with BICEP2 data
Yin-Zhe Ma, Yi Wang
We locally reconstruct the inflationary potential by using the current constraints on and from BICEP2 data. Assuming small and negligible , the inflation…