Cosmic string lens phenomenology: Model of Poisson energy distribution

Francis Bernardeau and Jean-Philippe Uzan
Phys. Rev. D 63, 023005 – Published 29 December 2000
PDFExport Citation

Abstract

We present a novel approach for investigating lens phenomenology of cosmic strings in order to elaborate detection strategies in galaxy deep field images. To account for the complexity of the projected energy distribution of string networks we assume their lens effects to be similar to those of a straight string carrying a random energy distribution. In such a model we show that, unlike the case of uniform strings, critical phenomena naturally appear. We explore the properties of the critical lines and caustics. In particular, assuming that the energy coherence length along the string is much smaller than the observation scale, we succeed in computing the total length of critical lines per unit string length and find it to be 4/3E(3/4). The length of the associated caustic lines can also be computed to be 16/(π3)E(3/4). The picture we obtain here for the phenomenology of cosmic string detection is clearly at variance with common lore.

  • Received 7 April 2000

DOI:https://doi.org/10.1103/PhysRevD.63.023005

©2000 American Physical Society

Authors & Affiliations

Francis Bernardeau

  • Service de Physique Théorique, CE de Saclay, F–91191 Gif-sur-Yvette Cedex, France

Jean-Philippe Uzan

  • Laboratoire de Physique Théorique, UMR–8627 du CNRS, Université Paris XI, Bâtiment 210, F–91405 Orsay Cedex, France
  • Département de Physique Théorique, Université de Genève, 24 quai E. Ansermet, CH–1211 Geneva 4, Switzerland

References (Subscription Required)

Click to Expand
Issue

Vol. 63, Iss. 2 — 15 January 2001

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review D

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×