Overview
- Nominated as an outstanding contribution by the University of Tokyo's Physics Department in 2015
- Develops a statistical approach to reveal the nature of dark components in the universe
- Provides detailed comparisons with observations and high-end computing on matter distribution in the universe
- Makes an essential contribution to the statistical analysis in future galaxy imaging surveys by constructing mock observations
- Includes supplementary material: sn.pub/extras
Part of the book series: Springer Theses (Springer Theses)
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Table of contents (6 chapters)
Keywords
About this book
In this book the applicability and the utility of two statistical approaches for understanding dark energy and dark matter with gravitational lensing measurement are introduced.
For cosmological constraints on the nature of dark energy, morphological statistics called Minkowski functionals (MFs) to extract the non-Gaussian information of gravitational lensing are studied. Measuring lensing MFs from the Canada–France–Hawaii Telescope Lensing survey (CFHTLenS), the author clearly shows that MFs can be powerful statistics beyond the conventional approach with the two-point correlation function. Combined with the two-point correlation function, MFs can constrain the equation of state of dark energy with a precision level of approximately 3–4 % in upcoming surveys with sky coverage of 20,000 square degrees.
On the topic of dark matter, the author studied the cross-correlation of gravitational lensing and the extragalactic gamma-ray background (EGB). Dark matter annihilation is among the potential contributors to the EGB. The cross-correlation is a powerful probe of signatures of dark matter annihilation, because both cosmic shear and gamma-ray emission originate directly from the same dark matter distribution in the universe. The first measurement of the cross-correlation using a real data set obtained from CFHTLenS and the Fermi Large Area Telescope was performed. Comparing the result with theoretical predictions, an independent constraint was placed on dark matter annihilation. Future lensing surveys will be useful to constrain on the canonical value of annihilation cross section for a wide range of mass of dark matter annihilation. Future lensing surveys will be useful to constrain on the canonical value of annihilation cross section for a wide range of mass of dark matter.
Authors and Affiliations
About the author
Dr. Masato Shirasaki
The University of Tokyo, Department of Physics
Bibliographic Information
Book Title: Probing Cosmic Dark Matter and Dark Energy with Weak Gravitational Lensing Statistics
Authors: Masato Shirasaki
Series Title: Springer Theses
DOI: https://doi.org/10.1007/978-981-287-796-3
Publisher: Springer Singapore
eBook Packages: Physics and Astronomy, Physics and Astronomy (R0)
Copyright Information: Springer Science+Business Media Singapore 2016
Hardcover ISBN: 978-981-287-795-6Published: 28 November 2015
Softcover ISBN: 978-981-10-1297-6Published: 23 August 2016
eBook ISBN: 978-981-287-796-3Published: 18 November 2015
Series ISSN: 2190-5053
Series E-ISSN: 2190-5061
Edition Number: 1
Number of Pages: XI, 136
Number of Illustrations: 25 b/w illustrations, 6 illustrations in colour
Topics: Astronomy, Astrophysics and Cosmology, Measurement Science and Instrumentation, Complex Systems, Statistical Physics and Dynamical Systems