Lensing in the Blue III: Weak Lensing Shape Catalogs of 30 Merging Galaxy Clusters
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| Autores principales: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Formato: | Preprint |
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2026
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| author | Saha, Sayan McCleary, Jacqueline E. Everett, Spencer W. Amit, Maya Vassilakis, Georgios N. Paracha, Emaad Fung, Leo W. H. Benton, Steven J. Jones, William C. Leroy, Gavin Huff, Eric M. Massey, Richard Luu, Thuy Vy T. Gill, Ajay S. Shaaban, Mohamed M. Voyer, Philippe Brown, Anthony M. Cerini, Giulia Clark, Paul Craigie, Matthew Damaren, Christopher J. Eifler, Tim Harvey, David Habjan, Eric Hartley, John W. Holder, Bradley Jauzac, Mathilde Lagattuta, David Leung, Jason S. -Y. Li, Lun Nagy, Johanna M. Netterfield, C. Barth Redmond, Susan F. Rhodes, Jason D. Robertson, Andrew Romualdez, L. Javier Schmoll, Jurgen Sirks, Ellen Tam, Sut Ieng Vitorelli, André Z. Zenteno, Alfredo |
| author_facet | Saha, Sayan McCleary, Jacqueline E. Everett, Spencer W. Amit, Maya Vassilakis, Georgios N. Paracha, Emaad Fung, Leo W. H. Benton, Steven J. Jones, William C. Leroy, Gavin Huff, Eric M. Massey, Richard Luu, Thuy Vy T. Gill, Ajay S. Shaaban, Mohamed M. Voyer, Philippe Brown, Anthony M. Cerini, Giulia Clark, Paul Craigie, Matthew Damaren, Christopher J. Eifler, Tim Harvey, David Habjan, Eric Hartley, John W. Holder, Bradley Jauzac, Mathilde Lagattuta, David Leung, Jason S. -Y. Li, Lun Nagy, Johanna M. Netterfield, C. Barth Redmond, Susan F. Rhodes, Jason D. Robertson, Andrew Romualdez, L. Javier Schmoll, Jurgen Sirks, Ellen Tam, Sut Ieng Vitorelli, André Z. Zenteno, Alfredo |
| contents | We present the weak gravitational lensing dataset from the Super-pressure Balloon-Borne Imaging Telescope (SuperBIT), which imaged 30 galaxy clusters during its 45 night flight in April to May 2023. SuperBIT is a first-of-its-kind balloon-borne imaging telescope that achieved near diffraction-limited observations in near-space conditions above 98% of the Earth's atmosphere. We use the metacalibration algorithm to obtain calibrated galaxy shapes for our target clusters and several calibration fields, enabling unbiased reconstruction of the weak-lensing signal. We employ several diagnostics throughout the pipeline, including assessments of point-spread function (PSF) modeling residuals and their impact on weak-lensing measurements, as well as tests for correlations between galaxy shapes and measured galaxy and PSF properties. To assess the multiplicative shear bias of the pipeline, we analyze a parallel set of simulated images that incorporate the real observing conditions from the flight, including measured SuperBIT PSFs, observed sky backgrounds, and detector noise, yielding a bias of $(1.1 \pm 7.8)$~per~cent. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2603_18376 |
| institution | arXiv |
| publishDate | 2026 |
| record_format | arxiv |
| spellingShingle | Lensing in the Blue III: Weak Lensing Shape Catalogs of 30 Merging Galaxy Clusters Saha, Sayan McCleary, Jacqueline E. Everett, Spencer W. Amit, Maya Vassilakis, Georgios N. Paracha, Emaad Fung, Leo W. H. Benton, Steven J. Jones, William C. Leroy, Gavin Huff, Eric M. Massey, Richard Luu, Thuy Vy T. Gill, Ajay S. Shaaban, Mohamed M. Voyer, Philippe Brown, Anthony M. Cerini, Giulia Clark, Paul Craigie, Matthew Damaren, Christopher J. Eifler, Tim Harvey, David Habjan, Eric Hartley, John W. Holder, Bradley Jauzac, Mathilde Lagattuta, David Leung, Jason S. -Y. Li, Lun Nagy, Johanna M. Netterfield, C. Barth Redmond, Susan F. Rhodes, Jason D. Robertson, Andrew Romualdez, L. Javier Schmoll, Jurgen Sirks, Ellen Tam, Sut Ieng Vitorelli, André Z. Zenteno, Alfredo Cosmology and Nongalactic Astrophysics Instrumentation and Methods for Astrophysics We present the weak gravitational lensing dataset from the Super-pressure Balloon-Borne Imaging Telescope (SuperBIT), which imaged 30 galaxy clusters during its 45 night flight in April to May 2023. SuperBIT is a first-of-its-kind balloon-borne imaging telescope that achieved near diffraction-limited observations in near-space conditions above 98% of the Earth's atmosphere. We use the metacalibration algorithm to obtain calibrated galaxy shapes for our target clusters and several calibration fields, enabling unbiased reconstruction of the weak-lensing signal. We employ several diagnostics throughout the pipeline, including assessments of point-spread function (PSF) modeling residuals and their impact on weak-lensing measurements, as well as tests for correlations between galaxy shapes and measured galaxy and PSF properties. To assess the multiplicative shear bias of the pipeline, we analyze a parallel set of simulated images that incorporate the real observing conditions from the flight, including measured SuperBIT PSFs, observed sky backgrounds, and detector noise, yielding a bias of $(1.1 \pm 7.8)$~per~cent. |
| title | Lensing in the Blue III: Weak Lensing Shape Catalogs of 30 Merging Galaxy Clusters |
| topic | Cosmology and Nongalactic Astrophysics Instrumentation and Methods for Astrophysics |
| url | https://arxiv.org/abs/2603.18376 |