Modern Cosmology and the Dark Matter Problem

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This book shows how modern cosmology and astronomy have led to the need to introduce dark matter in the universe to account for mass. Some of this dark matter is in the familiar form of protons, electrons and neutrons, but most of it must have a more exotic form. The favored, but not the only, possibility is neutrinos of non-zero rest mass, pair-created in the hot big bang and surviving to the present day. After a review of modern cosmology, this book gives a detailed account of the author's recent theory in which these neutrinos decay into photons that are the main ionizing agents in hydrogen and nitrogen in the interstellar and intergalactic medium. This theory, though speculative, explains a number of rather different puzzling phenomena in astronomy and cosmology in a unified way and predicts values of various important quantities such as the mass of the decaying neutrino and the Hubble constant.

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Editorial Reviews

From the Publisher
"Sciama presents lucid explanations of cosmology and the dark matter problem in general, worth reading for their clear distillations of complicated observational excellent survey of the subject of cosmic and galactic ionization, at a level of detail not found in cosmology texts." Science

"...The book is the epitome of clarity, and it will also make students think." David Hughes, New Scientist

"Although Sciama's neutrino scenario has been circulating in the cosmological community for several years, it was divided among many separate papers and until now was not all available in one place. Furthermore, for the nonspecialist, the book introduces and explains modern cosmology and the nature of dark matter problems themselves rather well. It is definitely a useful addition to the cosmological literature." David N. Schramm, Physics Today

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Product Details

  • ISBN-13: 9780521438483
  • Publisher: Cambridge University Press
  • Publication date: 2/28/2003
  • Series: Cambridge Lecture Notes in Physics Series, #3
  • Pages: 244
  • Product dimensions: 5.98 (w) x 8.98 (h) x 0.55 (d)

Table of Contents

Preface; Part I. Dark Matter in Astronomy and Cosmology: 1. Dark matter in galaxies; 2. Dark matter in clusters of galaxies; 3. Dark matter in intergalactic space; 4. The identity of the dark matter; Part II. Ionisation Problems in Astronomy and Cosmology: 5. Diffuse ionisation in the Milky Way; 6. Diffuse ionisation in spiral galaxies; 7. The intergalactic flux of hydrogen-ionising photons; Part III. Neutrino Decay and Ionisation in the Universe: 8. The radiative decay of massive neutrinos; 9. Neutrino decay and the ionisation of the Milky Way; 10. Neutrino decay and the ionisation of spiral galaxies; 11. The intergalactic flux of ionising decay photons; 12. The reionisation of the Universe; Part IV. Observational Searches for the Neutrino Decay Line: 13. Observational searches for the neutrino decay line; References; Subject index.

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