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The Santiago-Harvard-Edinburgh-Durham void comparison II: unveiling the Vainshtein screening using weak lensing
Enrique Paillas, Marius Cautun, Baojiu Li +4
We study cosmic voids in the normal-branch Dvali-Gabadadze-Porrati (nDGP) braneworld models, which are representative of a class of modified gravity theories where deviations from…
Modelling the environmental dependence of the growth rate
Ixandra Achitouv, Yan-Chuan Cai
The growth rate of cosmic structure is a powerful cosmological probe for extracting information on the gravitational interactions and dark energy. In the late time Universe, the gr…
Cosmological Simulations for Combined-Probe Analyses: Covariance and Neighbour-Exclusion Bias
J. Harnois-Deraps, A. Amon, A. Choi +12
We present a public suite of weak lensing mock data, extending the Scinet Light Cone Simulations (SLICS) to simulate cross-correlation analyses with different cosmological probes.…
Studying galaxy troughs and ridges using Weak Gravitational Lensing with the Kilo-Degree Survey
Margot M. Brouwer, Vasiliy Demchenko, Joachim Harnois-Déraps +15
We study projected underdensities in the cosmic galaxy density field known as 'troughs', and their overdense counterparts, which we call 'ridges'. We identify these regions using a…
Testing modified gravity using a marked correlation function
Joaquin Armijo, Yan-Chuan Cai, Nelson Padilla +2
In theories of modified gravity with the chameleon screening mechanism, the strength of the fifth force depends on environment. This induces an environment dependence of structure…