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Beyond CDM: Problems, solutions, and the road ahead
Philip Bull, Yashar Akrami, Julian Adamek +37
Despite its continued observational successes, there is a persistent (and growing) interest in extending cosmology beyond the standard model, CDM. This is motivated by a range o…
The nature of voids: II. Tracing underdensities with biased galaxies
Seshadri Nadathur, Shaun Hotchkiss
We study how the properties of cosmic voids depend on those of the tracer galaxy populations in which they are identified. We use a suite of halo occupation distribution (HOD) mock…
Decaying dark matter and the tension in
Kari Enqvist, Seshadri Nadathur, Toyokazu Sekiguchi +1
We consider decaying dark matter (DDM) as a resolution to the possible tension between cosmic microwave background (CMB) and weak lensing (WL) based determinations of the amplitude…
The nature of voids: I. Watershed void finders and their connection with theoretical models
Seshadri Nadathur, Shaun Hotchkiss
The statistical study of voids in the matter distribution promises to be an important tool for precision cosmology, but there are known discrepancies between theoretical models of…