Transient Weak-Lensing by Cosmological Dark Matter Microhaloes

  title={Transient Weak-Lensing by Cosmological Dark Matter Microhaloes},
  author={Sohrab Rahvar and Shant Baghram and Niayesh Afshordi},
  journal={Physical Review D},
We study the time variation of the apparent flux of cosmological point sources due to the transient weak lensing by dark matter microhaloes. Assuming a transverse motion of microhaloes with respect to our line of sight, we derive the correspondence between the temporal power spectrum of the weak lensing magnification, and the spatial power spectrum of density on small scales. Considering different approximations for the small scale structure of dark matter, we predict the apparent magnitude of… Expand

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