Cosmic microwave background anisotropy induced by a moving straight cosmic string

Nuclei, Particles, Fields, Gravitation, and Astrophysics

Abstract

A method of searching for cosmic strings based on an analysis of the cosmic microwave background (CMB) anisotropy is presented. A moving straight cosmic string is shown to generate structures of enhanced and reduced brightness with a distinctive shape. The conditions under which a string can be detected by both CMB anisotropy and gravitational lensing in optical surveys are analyzed. For a relativistic string with a deficit angle of ∼1″–2″, the amplitude of the generated anisotropy is shown to be ∼15–30 μK.

PACS numbers

11.25.-w 11.27.+d 95.75.Mn 95.85.Bh 98.80.-k 

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Copyright information

© Pleiades Publishing, Ltd. 2008

Authors and Affiliations

  • O. S. Sazhina
    • 1
  • M. V. Sazhin
    • 1
  • V. N. Sementsov
    • 1
  1. 1.Sternberg Astronomical InstituteMoscow State UniversityMoscowRussia

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