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Improving Lens Modelling from Ground-Based Imaging with Deconvolution

delete2026-09-29
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OA
AI
E
E. Paic *
K
Kenneth C. Wong
A
Anupreeta More
A
Anton T. Jaelani
DOI：10.3390/galaxies14050088delete
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摘要

摘要

En 中文
精确且精密的质量建模对于从强引力透镜系统中提取有关宇宙学、星系环境和暗物质本质的见解至关重要。Hyper Suprime-Cam Subaru 战略项目（HSC-SSP）已绘制了约1000平方度的天空，发现了超过1000个确定的或可能的星系尺度引力透镜候选体。由于地面成像的分辨率对精确透镜建模构成挑战，高分辨率成像传统上被用于这些系统的详细分析。在本工作中，我们提出应用STARRED算法，该算法利用星形小波正则化，作为透镜建模前的预处理步骤，以最大化大型HSC-SSP样本的科学产出。我们在七个具有不同透镜配置的HSC类模拟透镜系统上测试了这种方法。结果表明，从约0.6″到约0.15″的分辨率提升，使地面图像中关键透镜参数（如爱因斯坦半径θ E 和质量轴比q m）的测量精度达到亚3%。这些结果为从大型地面观测样本中精确测量关键强引力透镜量铺平了道路。
Keyword:
galaxy–galaxy lensing
strong lensing mass modelling
deconvolution
ground-based imaging
SuGOHI
HSC-SSP
STARRED
Herculens

期刊

Galaxies 封面图
Galaxies
IF:
3.8
论文数:
824
被引数:
2.1K

机构

I
inter-university centre for astronomy and astrophysics
学者数:
1
论文数: 2
被引数: 0
I
Institut Teknologi Bandung
学者数:
31
论文数: 13
被引数: 0
T
the university of tokyo
学者数:
403
论文数: 125
被引数: 0
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