output
19932026
Showing 2018 · astro-ph.COShow all

6 papers · 2 filters

astro-ph.CO2018★ 51 cited

Time-varying neutrino mass from a supercooled phase transition: current cosmological constraints and impact on the - plane

Christiane S. Lorenz, Lena Funcke, Erminia Calabrese +1

In this paper we investigate a time-varying neutrino mass model, motivated by the mild tension between cosmic microwave background (CMB) measurements of the matter fluctuations and…

astro-ph.CO2018★ 45 cited

Fully relativistic treatment of light neutrinos in -body simulations

Thomas Tram, Jacob Brandbyge, Jeppe Dakin +1

Cosmological -body simulations are typically purely run with particles using Newtonian equations of motion. However, such simulations can be made fully consistent with general r…

astro-ph.CO2018★ 193 cited

The Carnegie Supernova Project: Absolute Calibration and the Hubble Constant

Christopher. R. Burns, Emilie Parent, M. M. Phillips +23

We present an analysis of the final data release of the Carnegie Supernova Project I, focusing on the absolute calibration of the luminosity-decline-rate relation for Type Ia super…

astro-ph.CO2018★ 27 cited

A new approach to cosmological structure formation with massive neutrinos

Christian Fidler, Alexander Kleinjohann, Thomas Tram +2

We show how Newtonian cosmological simulations can be employed to investigate the non-linear evolution of two particle species in a relativistic context. We discuss the application…

astro-ph.CO2018★ 12 cited

Momentum space sampling of neutrinos in -body simulations

Jacob Brandbyge, Steen Hannestad, Thomas Tram

Including massive neutrinos in -body simulations is a challenging task due to the large thermal velocities of the neutrinos. In particle based codes this leads to problems of sh…

astro-ph.CO2018★ 36 cited

Testing the Cosmic Shear Spatially-Flat Universe Approximation with Generalized Lensing and Shear Spectra

Peter L. Taylor, Thomas D. Kitching, Jason D. McEwen +1

We introduce the Generalised Lensing and Shear Spectra GLaSS code which is available for download from https://github.com/astro-informatics/GLaSS It is a fast and flexible public c…