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Beyond ΛCDM

Exploring Alternatives to the Standard Cosmological Paradigm

  • Sownak Bose

Part of the Springer Theses book series (Springer Theses)

Table of contents

  1. Front Matter
    Pages i-xxxiv
  2. Sownak Bose
    Pages 1-11
  3. Cosmology with Sterile Neutrinos

  4. Numerical Simulations of f(R) Gravity

  5. Conclusions and Future Work

    1. Front Matter
      Pages 161-161
    2. Sownak Bose
      Pages 163-172
  6. Back Matter
    Pages 173-181

About this book

Introduction

This book employs computer simulations of ‘artificial’ Universes to investigate the properties of two popular alternatives to the standard candidates for dark matter (DM) and dark energy (DE). It confronts the predictions of theoretical models with observations using a sophisticated semi-analytic model of galaxy formation. Understanding the nature of dark matter (DM) and dark energy (DE) are two of the most central problems in modern cosmology. While their important role in the evolution of the Universe has been well established—namely, that DM serves as the building blocks of galaxies, and that DE accelerates the expansion of the Universe—their true nature remains elusive. In the first half, the authors consider ‘sterile neutrino’ DM, motivated by recent claims that these particles may have finally been detected. Using sophisticated models of galaxy formation, the authors find that future observations of the high redshift Universe and faint dwarf galaxies in the Local Group can place strong constraints on the sterile neutrino scenario. In the second half, the authors propose and test novel numerical algorithms for simulating Universes with a ‘modified’ theory of gravity, as an alternative explanation to accelerated expansion. The authors’ techniques improve the efficiency of these simulations by more than a factor of 20 compared to previous methods, inviting the readers into a new era for precision cosmological tests of gravity.

Keywords

Dark Matter Dark Energy Modified Gravity Sterile Neutrinos Cosmological Simulations Structure Formation Warm Dark Matter Cold Dark Matter - F(R) Gravity

Authors and affiliations

  • Sownak Bose
    • 1
  1. 1.Harvard–Smithsonian Center for AstrophysicsCambridgeUSA

Bibliographic information

  • DOI https://doi.org/10.1007/978-3-319-96761-5
  • Copyright Information Springer International Publishing AG, part of Springer Nature 2018
  • Publisher Name Springer, Cham
  • eBook Packages Physics and Astronomy
  • Print ISBN 978-3-319-96760-8
  • Online ISBN 978-3-319-96761-5
  • Series Print ISSN 2190-5053
  • Series Online ISSN 2190-5061
  • Buy this book on publisher's site