2 citations · 2 across the 4 of their papers we have counts for
4 papers
Cosmological Spacetimes with Sign-Changing Spatial Curvature and Topological Transitions
Gerardo García-Moreno, Bert Janssen, Alejandro Jiménez Cano +3
Observational evidence, together with practical computations and modeling, supports a Euclidean spatial sector in the current cosmological model based on the FLRW metric. This, how…
Cosmological spacetimes with spatially constant sign-changing curvature
Miguel Sánchez
Globally hyperbolic spacetimes endowed with a time function whose spacelike slices have constant curvature and where the sign of (as well as the topol…
A class of cosmological models with spatially constant sign-changing curvature
Miguel Sánchez
We construct globally hyperbolic spacetimes such that each slice of the universal time is a model space of constant curvature which may not only vary with…
The Athena X-ray Integral Field Unit: a consolidated design for the system requirement review of the preliminary definition phase
Didier Barret, Vincent Albouys, Jan-Willem den Herder +296
The Athena X-ray Integral Unit (X-IFU) is the high resolution X-ray spectrometer, studied since 2015 for flying in the mid-30s on the Athena space X-ray Observatory, a versatile ob…