The IA Guide: A Breakdown of Intrinsic Alignment Formalisms

Claire Lamman; Eleni Tsaprazi; Jingjing Shi; Nikolina Niko Šarčević; Susan Pyne; Elisa Legnani; Tassia Ferreira

doi:10.21105/astro.2309.08605

The IA Guide: A Breakdown of Intrinsic Alignment Formalisms

Cosmology and Nongalactic Astrophysics 2024-02-27 v2 Astrophysics of Galaxies

Authors: Claire Lamman , Eleni Tsaprazi , Jingjing Shi , Nikolina Niko Šarčević , Susan Pyne , Elisa Legnani , Tassia Ferreira

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Abstract

We summarize common notations and concepts in the field of Intrinsic Alignments (IA). IA refers to physical correlations involving galaxy shapes, galaxy spins, and the underlying cosmic web. Its characterization is an important aspect of modern cosmology, particularly in weak lensing analyses. This resource is both a reference for those already familiar with IA and designed to introduce someone to the field by drawing from various studies and presenting a collection of IA formalisms, estimators, modeling approaches, alternative notations, and useful references.

Keywords

intrinsic alignments galaxy shapes cosmic web weak lensing formalisms estimators modeling approaches

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@article{arxiv.2309.08605,
  title  = {The IA Guide: A Breakdown of Intrinsic Alignment Formalisms},
  author = {Claire Lamman and Eleni Tsaprazi and Jingjing Shi and Nikolina Niko Šarčević and Susan Pyne and Elisa Legnani and Tassia Ferreira},
  journal= {arXiv preprint arXiv:2309.08605},
  year   = {2024}
}

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34 pages, 10 figures

The IA Guide: A Breakdown of Intrinsic Alignment Formalisms

Abstract

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