High Resolution Weak Lensing Mass-Mapping Combining Shear and Flexion

Mar 4, 2016
19 pages
Published in:
  • Astron.Astrophys. 591 (2016) A2
  • Published: Jun 1, 2016
e-Print:

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Abstract: (EDP Sciences)
Aims. We propose a new mass mapping algorithm, specifically designed to recover small-scale information from a combination of gravitational shear and flexion. Including flexion allows us to supplement the shear on small scales in order to increase the sensitivity to substructures and the overall resolution of the convergence map without relying on strong lensing constraints.
Note:
  • gravitational lensing: weak
  • methods: data analysis
  • galaxies: clusters: general
  • dark matter