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On the Probability for Sub-Halo Detection through Quasar Image Splitting

  • T. Riehm (a1), E. Zackrisson (a1) (a2) (a3), K. Wiik (a2) and O. Möller (a4)

Abstract

Dark galaxies may in principle be detectable through strong-lensing image splitting of quasars on small angular scales (milliarcseconds or below). Here, we estimate the overall probabilities for such detections under the assumption that the quasars can be treated as point sources. Due to the very low probabilities derived, we conclude that it is currently not feasable to use this strategy to put the CDM predictions for the dark galaxy population to the test.

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References

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Keywords

On the Probability for Sub-Halo Detection through Quasar Image Splitting

  • T. Riehm (a1), E. Zackrisson (a1) (a2) (a3), K. Wiik (a2) and O. Möller (a4)

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