Using gravitational lensing flexions to constrain dark matter halo shapes and profiles

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• Shude Mao (Manchester & NAOC)
• Wednesday 08 August 2012, 13:15-13:45
• Sackler Lecture Theatre, IoA.

If you have a question about this talk, please contact ma557.

Hierarchical structure formation theory predicts tri-axial halo shapes and density profiles. Gravitational lensing flexion is related to the derivative of the weak lensing shear and convergence. We show that, as a higher order derivative of the lensing potential, the flexion can be used to test these predictions.

This talk is part of the Institute of Astronomy Seminars series.

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• Cambridge Astronomy Talks
• Combined External Astrophysics Talks DAMTP
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• Cosmology, Astrophysics and General Relativity
• Institute of Astronomy Seminars
• Institute of Astronomy Talk Lists
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• Sackler Lecture Theatre, IoA

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