Constraints on Dark Matter Self-interactions from Weak Lensing of Galaxies from the Dark Energy Survey around Clusters from the Atacama Cosmology Telescope Survey
Self-interactions of dark matter particles impact the distribution of dark matter in halos. The exact nature of the self-interactions can lead to either expansion or collapse of the core within the halo lifetime, leaving distinctive signatures in the dark matter distributions not only at the halo ce...
Saved in:
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
IOP Publishing
2025-01-01
|
| Series: | The Astrophysical Journal |
| Subjects: | |
| Online Access: | https://doi.org/10.3847/1538-4357/adb0c4 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850261388789809152 |
|---|---|
| author | Susmita Adhikari Arka Banerjee Bhuvnesh Jain Tae-hyeon Shin Yi-Ming Zhong |
| author_facet | Susmita Adhikari Arka Banerjee Bhuvnesh Jain Tae-hyeon Shin Yi-Ming Zhong |
| author_sort | Susmita Adhikari |
| collection | DOAJ |
| description | Self-interactions of dark matter particles impact the distribution of dark matter in halos. The exact nature of the self-interactions can lead to either expansion or collapse of the core within the halo lifetime, leaving distinctive signatures in the dark matter distributions not only at the halo center but throughout the virial region. Optical galaxy surveys, which precisely measure the weak lensing of background galaxies by massive foreground clusters, allow us to directly measure the matter distribution within clusters and probe subtle effects of self-interacting dark matter (SIDM) throughout the halo’s full radial range. We compare the weak-lensing measurements reported by T. Shin et al., which use lens clusters identified by the Atacama Cosmology Telescope Survey and source galaxies from the Dark Energy Survey, with predictions from SIDM models having either elastic or dissipative self-interactions. To model the weak-lensing observables, we use cosmological N -body simulations for elastic self-interactions and semianalytical fluid simulations for dissipative self-interactions. We find that current weak-lensing measurements already constrain the isotropic and elastic SIDM to a cross section per mass of σ / m < 1 cm ^2 g ^−1 at a 95% confidence level for clusters with mean M _200m = 3 × 10 ^14 M _⊙ h ^–1 . The same measurements also impose novel constraints on the energy loss per unit mass for dissipative SIDM. Upcoming surveys are anticipated to enhance the signal-to-noise ratio of weak-lensing observables significantly, making them effective tools for investigating the nature of dark matter, including self-interactions, through weak lensing. |
| format | Article |
| id | doaj-art-32969df2e65c494fa938f2543dcb4166 |
| institution | OA Journals |
| issn | 1538-4357 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | The Astrophysical Journal |
| spelling | doaj-art-32969df2e65c494fa938f2543dcb41662025-08-20T01:55:27ZengIOP PublishingThe Astrophysical Journal1538-43572025-01-0198315010.3847/1538-4357/adb0c4Constraints on Dark Matter Self-interactions from Weak Lensing of Galaxies from the Dark Energy Survey around Clusters from the Atacama Cosmology Telescope SurveySusmita Adhikari0https://orcid.org/0000-0002-0298-4432Arka Banerjee1https://orcid.org/0000-0002-5209-1173Bhuvnesh Jain2Tae-hyeon Shin3Yi-Ming Zhong4Indian Institute of Science Education and Research , Pune, Maharashtra, 411008, India ; susmita@iiserpune.ac.inIndian Institute of Science Education and Research , Pune, Maharashtra, 411008, India ; susmita@iiserpune.ac.inCenter for Particle Cosmology, Department of Physics and Astronomy, University of Pennsylvania , Philadelphia, PA 19104, USADepartment of Physics and Astronomy, Stony Brook University , Stony Brook, NY 11794, USADepartment of Physics, City University of Hong Kong , Kowloon, Hong Kong SAR, People’s Republic of China ; yimzhong@cityu.edu.hk; Kavli Institute for Cosmological Physics, University of Chicago , Chicago, IL 60637, USASelf-interactions of dark matter particles impact the distribution of dark matter in halos. The exact nature of the self-interactions can lead to either expansion or collapse of the core within the halo lifetime, leaving distinctive signatures in the dark matter distributions not only at the halo center but throughout the virial region. Optical galaxy surveys, which precisely measure the weak lensing of background galaxies by massive foreground clusters, allow us to directly measure the matter distribution within clusters and probe subtle effects of self-interacting dark matter (SIDM) throughout the halo’s full radial range. We compare the weak-lensing measurements reported by T. Shin et al., which use lens clusters identified by the Atacama Cosmology Telescope Survey and source galaxies from the Dark Energy Survey, with predictions from SIDM models having either elastic or dissipative self-interactions. To model the weak-lensing observables, we use cosmological N -body simulations for elastic self-interactions and semianalytical fluid simulations for dissipative self-interactions. We find that current weak-lensing measurements already constrain the isotropic and elastic SIDM to a cross section per mass of σ / m < 1 cm ^2 g ^−1 at a 95% confidence level for clusters with mean M _200m = 3 × 10 ^14 M _⊙ h ^–1 . The same measurements also impose novel constraints on the energy loss per unit mass for dissipative SIDM. Upcoming surveys are anticipated to enhance the signal-to-noise ratio of weak-lensing observables significantly, making them effective tools for investigating the nature of dark matter, including self-interactions, through weak lensing.https://doi.org/10.3847/1538-4357/adb0c4Weak gravitational lensingGalaxy dark matter halosDark matterParticle physics |
| spellingShingle | Susmita Adhikari Arka Banerjee Bhuvnesh Jain Tae-hyeon Shin Yi-Ming Zhong Constraints on Dark Matter Self-interactions from Weak Lensing of Galaxies from the Dark Energy Survey around Clusters from the Atacama Cosmology Telescope Survey The Astrophysical Journal Weak gravitational lensing Galaxy dark matter halos Dark matter Particle physics |
| title | Constraints on Dark Matter Self-interactions from Weak Lensing of Galaxies from the Dark Energy Survey around Clusters from the Atacama Cosmology Telescope Survey |
| title_full | Constraints on Dark Matter Self-interactions from Weak Lensing of Galaxies from the Dark Energy Survey around Clusters from the Atacama Cosmology Telescope Survey |
| title_fullStr | Constraints on Dark Matter Self-interactions from Weak Lensing of Galaxies from the Dark Energy Survey around Clusters from the Atacama Cosmology Telescope Survey |
| title_full_unstemmed | Constraints on Dark Matter Self-interactions from Weak Lensing of Galaxies from the Dark Energy Survey around Clusters from the Atacama Cosmology Telescope Survey |
| title_short | Constraints on Dark Matter Self-interactions from Weak Lensing of Galaxies from the Dark Energy Survey around Clusters from the Atacama Cosmology Telescope Survey |
| title_sort | constraints on dark matter self interactions from weak lensing of galaxies from the dark energy survey around clusters from the atacama cosmology telescope survey |
| topic | Weak gravitational lensing Galaxy dark matter halos Dark matter Particle physics |
| url | https://doi.org/10.3847/1538-4357/adb0c4 |
| work_keys_str_mv | AT susmitaadhikari constraintsondarkmatterselfinteractionsfromweaklensingofgalaxiesfromthedarkenergysurveyaroundclustersfromtheatacamacosmologytelescopesurvey AT arkabanerjee constraintsondarkmatterselfinteractionsfromweaklensingofgalaxiesfromthedarkenergysurveyaroundclustersfromtheatacamacosmologytelescopesurvey AT bhuvneshjain constraintsondarkmatterselfinteractionsfromweaklensingofgalaxiesfromthedarkenergysurveyaroundclustersfromtheatacamacosmologytelescopesurvey AT taehyeonshin constraintsondarkmatterselfinteractionsfromweaklensingofgalaxiesfromthedarkenergysurveyaroundclustersfromtheatacamacosmologytelescopesurvey AT yimingzhong constraintsondarkmatterselfinteractionsfromweaklensingofgalaxiesfromthedarkenergysurveyaroundclustersfromtheatacamacosmologytelescopesurvey |