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Sources and Detection of Dark Matter and Dark Energy in the Universe pp 67–71Cite as

Bounds on Dark Matter from CMB Observations

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Part of the book series: Springer Proceedings in Physics ((SPPHY,volume 148))

Abstract

Observational evidence from large scale structure, gravitational lensing, the cosmic microwave background (CMB), and galaxy rotation curves have confirmed the existence of dark matter, yet its nature remains a mystery. A well motivated dark matter candidate is the supersymmetric neutralino. While neutralinos are stable particles, they annihilate in pairs, releasing energy in the form of standard model particles. Some of this energy is absorbed by the surrounding gas, causing the gas to heat and ionize. The excess free electrons scatter CMB photons coming to us from the surface of last scattering, modifying the CMB power spectra. We show that precise measurements of the CMB can place bounds on dark matter properties.

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Acknowledgements

I thank the Bruce and Astrid McWilliams Center for Cosmology for financial support.

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Authors and Affiliations

  1. Department of Physics, McWilliams Center for Cosmology, Carnegie Mellon University, 5000 Forbes Ave, Pittsburgh, PA, 15213, USA

    Aravind Natarajan

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  1. Aravind Natarajan
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Correspondence to Aravind Natarajan .

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Editors and Affiliations

  1. UCLA Physics & Astronomy, Los Angeles, USA

    David Cline

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Natarajan, A. (2013). Bounds on Dark Matter from CMB Observations. In: Cline, D. (eds) Sources and Detection of Dark Matter and Dark Energy in the Universe. Springer Proceedings in Physics, vol 148. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-7241-0_10

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  • DOI: https://doi.org/10.1007/978-94-007-7241-0_10

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  • Publisher Name: Springer, Dordrecht

  • Print ISBN: 978-94-007-7240-3

  • Online ISBN: 978-94-007-7241-0

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