A Strong Gravitational Lensing Model of PSZ2 G118.46+39.32
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arXiv
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| Main Authors: | , , , , , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866915612663480320 |
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| author | Smith, Isaac Cerny, Catherine Sharon, Keren Mahler, Guillaume Khullar, Gourav Beauchesne, Benjamin Collaboration, The SLICE |
| author_facet | Smith, Isaac Cerny, Catherine Sharon, Keren Mahler, Guillaume Khullar, Gourav Beauchesne, Benjamin Collaboration, The SLICE |
| contents | We present the first strong gravitational lensing model for the cluster PSZ2 G118.46+39.32 (z = 0.3967) using new NIRCam imaging from the Strong LensIng and Cluster Evolution (SLICE) JWST program. We leverage the broad coverage of the SLICE ultrawide JWST filters to identify new lensed galaxies, some of which are not visible in HST, to model the cluster's mass distribution. The model was constructed with a total of 11 multiply imaged systems, decomposed into 30 images with 60 clumps used as strong lensing constraints. PSZ2 G118.46+39.32 shows a clear bimodal structure, indicating that it may be undergoing a merger. The predicted mass distribution of the model aligns with the X-ray gas in the cluster, suggesting it is in a pre-merger state. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_08300 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | A Strong Gravitational Lensing Model of PSZ2 G118.46+39.32 Smith, Isaac Cerny, Catherine Sharon, Keren Mahler, Guillaume Khullar, Gourav Beauchesne, Benjamin Collaboration, The SLICE Cosmology and Nongalactic Astrophysics We present the first strong gravitational lensing model for the cluster PSZ2 G118.46+39.32 (z = 0.3967) using new NIRCam imaging from the Strong LensIng and Cluster Evolution (SLICE) JWST program. We leverage the broad coverage of the SLICE ultrawide JWST filters to identify new lensed galaxies, some of which are not visible in HST, to model the cluster's mass distribution. The model was constructed with a total of 11 multiply imaged systems, decomposed into 30 images with 60 clumps used as strong lensing constraints. PSZ2 G118.46+39.32 shows a clear bimodal structure, indicating that it may be undergoing a merger. The predicted mass distribution of the model aligns with the X-ray gas in the cluster, suggesting it is in a pre-merger state. |
| title | A Strong Gravitational Lensing Model of PSZ2 G118.46+39.32 |
| topic | Cosmology and Nongalactic Astrophysics |
| url | https://arxiv.org/abs/2511.08300 |