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Mapping the dark matter with weak gravitational lensing
Abstract
We consider the problem of reconstructing the projected mass distribution in clusters from coherent distortions of background galaxies. The ellipticity of a background galaxy provides an estimate of the trace-free components of the tidal field {second partial derivative of {PHI} with respect to θ_i_, θ_j_} where {PHI}(θ) is the two-dimensional potential generated by the surface density {SIGMA}(θ). We present a technique for inverting this problem. The resulting surface density contains a strong, but incoherent, random component arising from the random intrinsic galaxy ellipticities. This can be removed by filtering. Our method is very similar in form to that of Tyson et al., and the latter is given a rigorous interpretation as a particular implementation of filtering. We present simulations to illustrate the application of the method.
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Cited by
Cosmology and Fundamental Physics with the Euclid Satellite
The Euclid Theory Working Group, Amendola, L., Appleby, S., Bacon, D., Baker, T., Baldi, M., Bartolo, N., Blanchard, A., Bonvin, C., Borgani, S., et al. (2013) · Living Reviews in Relativity · doi:10.12942/lrr-2013-6 · Cited by 899
Clowe, D., Gonzalez, A., & Markevitch, M. (2004) · The Astrophysical Journal · doi:10.1086/381970 · Cited by 638
Cosmology with cosmic shear observations: a review
Kilbinger, M. (2015) · Reports on Progress in Physics · doi:10.1088/0034-4885/78/8/086901 · Cited by 604
Probing the Universe with Weak Lensing
Mellier, Y. (1999) · Annual Review of Astronomy and Astrophysics · doi:10.1146/annurev.astro.37.1.127 · Cited by 490
Intrinsic correlation of galaxy shapes: implications for weak lensing measurements
Heavens, A., Refregier, A. R., & Heymans, C. (2000) · Monthly Notices of the Royal Astronomical Society · doi:10.1046/j.1365-8711.2000.03907.x · Cited by 339
Metadata
- Authors
- Kaiser, N., & Squires, G.
- Venue
- The Astrophysical Journal
- Publisher
- American Astronomical Society
- Published
- 1993-02
- Volume
- 404
- Pages
- 441
- ISSN
- 0004-637X (ISSN-L)
- 1538-4357
- OpenAlex
- W2057504741
- Cited by
- 860
- References
- 0
- FWCI
- 24.57
- Type
- journal article
- Language
- en
- Open access
- closed
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- Kaiser, N., & Squires, G. (1993). Mapping the dark matter with weak gravitational lensing. The Astrophysical Journal. https://doi.org/10.1086/172297
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