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Late time CMB anisotropies constrain mini-charged particles

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C. Burragea, J. Jaeckelb, J. Redondoa and A. Ringwalda

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Observations of the temperature anisotropies induced as light from the CMB passes through large scale structures in the late universe are a sensitive probe of the interactions of photons in such environments. In extensions of the Standard Model which give rise to mini-charged particles, photons propagating through transverse magnetic fields can be lost to pair production of such particles. Such a decrement in the photon flux would occur as photons from the CMB traverse the magnetic fields of galaxy clusters. Therefore late time CMB anisotropies can be used to constrain the properties of mini-charged particles. We outline how this test is constructed, and present new constraints on mini-charged particles from observations of the Sunyaev-Zel'dovich effect in the Coma cluster.

Keywords

cosmology of theories beyond the SM

Sunyaev-Zeldovich effect

string theory and cosmology

magnetic fields

 

E-print Number: 0909.0649

Cited: by |

Refers: to

PACS

98.70.Vc Background radiations

12.60.-i Models beyond the standard model

14.70.Bh Photons

95.30.Cq Elementary particle processes

98.65.Cw Galaxy clusters

Subjects

Particle physics and field theory

Astrophysics and astroparticles

Dates

Issue 11 (November 2009)

Received 5 September 2009, accepted for publication 12 October 2009

Published 4 November 2009



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