Anomalous fluctuations in observations of Q0957+561 A,B: Smoking gun of a cosmic string?

  title={Anomalous fluctuations in observations of Q0957+561 A,B: Smoking gun of a cosmic string?},
  author={R. Schild and I. Masnyak and B. Hnatyk and V. Zhdanov},
  journal={Astronomy and Astrophysics},
  • R. Schild, I. Masnyak, +1 author V. Zhdanov
  • Published 2004
  • Physics
  • Astronomy and Astrophysics
  • We report the detection of anomalous brightness fluctuations in the multiple image Q0957 + 561 A,B gravitational lens system, and consider whether such anomalies have a plausible interpretation within the framework of cosmic string theory. We study a simple model of gravitational lensing by an asymmetric rotating string. An explicit form of the lens equation is obtained and approximate relations for magnification are derived. We show that such a model with typical parameters of the GUT string… CONTINUE READING
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