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  5. A high-resolution view of the source-plane magnification near cluster caustics in wave dark matter models

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Preprint
en
2024

A high-resolution view of the source-plane magnification near cluster caustics in wave dark matter models

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0 Files

en
2024
DOI: 10.48550/arxiv.2406.08537arxiv.org/abs/2406.08537

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Alexei V Filippenko
Alexei V Filippenko

University of California, Berkeley

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J. M. Diego
Alfred Amruth
Jose M. Palencia
+10 more

Abstract

We present the highest resolution images to date of caustics formed by wave dark matter ($ψ$DM) fluctuations near the critical curves of cluster gravitational lenses. We describe the basic magnification features of $ψ$DM in the source plane at high macromodel magnification and discuss specific differences between the $ψ$DM and standard cold dark matter (CDM) models. The unique generation of demagnified counterimages formed outside the Einstein radius for $ψ$DM is highlighted. Substructure in CDM cannot generate such demagnified images of positive parity, thus providing a definitive way to distinguish $ψ$DM from CDM. Highly magnified background sources with sizes $r\approx 1pc$, or approximately a factor of ten smaller than the expected de Broglie wavelength of $ψ$DM, offer the best possibility of discriminating between $ψ$DM and CDM. These include objects such as very compact stellar clusters at high redshift that JWST is finding in abundance.

How to cite this publication

J. M. Diego, Alfred Amruth, Jose M. Palencia, Tom Broadhurst, Sung Kei Li, Jeremy Lim, Rogier A. Windhorst, Adi Zitrin, Alexei V Filippenko, Liliya L. R. Williams, Ashish Kumar Meena, Wenlei Chen, Patrick Kelly (2024). A high-resolution view of the source-plane magnification near cluster caustics in wave dark matter models. , DOI: https://doi.org/10.48550/arxiv.2406.08537.

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Publication Details

Type

Preprint

Year

2024

Authors

13

Datasets

0

Total Files

0

Language

en

DOI

https://doi.org/10.48550/arxiv.2406.08537

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