Search for cosmic strings in the COSMOS survey

J. L. Christiansen, E. Albin, T. Fletcher, J. Goldman, I. P. W. Teng, M. Foley, and G. F. Smoot
Phys. Rev. D 83, 122004 – Published 6 June 2011

Abstract

We search the COSMOS survey for pairs of galaxies consistent with the gravitational lensing signature of a cosmic string. The COSMOS survey imaged 1.64 square degrees using the Advanced Camera for Surveys aboard the Hubble Space Telescope. Our technique includes estimates of the efficiency for finding the lensed galaxy pair. We find no evidence for cosmic strings with a mass per unit length of Gμ/c2<3.0×107 out to redshifts greater than 0.6 and set 95% upper limits. This corresponds to a global 95% upper limit of Ωstrings<0.0028.

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  • Received 4 August 2010

DOI:https://doi.org/10.1103/PhysRevD.83.122004

© 2011 American Physical Society

Authors & Affiliations

J. L. Christiansen*, E. Albin, and T. Fletcher

  • Department of Physics, California Polytechnic State University, San Luis Obispo, California 93407, USA

J. Goldman and I. P. W. Teng

  • Department of Physics, National University of Singapore, Singapore 117542

M. Foley

  • Department of Biomedical Engineering, California Polytechnic State University, San Luis Obispo, California 93407, USA

G. F. Smoot

  • Lawrence Berkeley National Laboratory, Space Sciences Laboratory, and Department of Physics, University of California, Berkeley, California 94720, USA

  • *jlchrist@calpoly.edu

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Vol. 83, Iss. 12 — 15 June 2011

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