Astronomical instruments generally possess spatially variant point-spread functions, which determine the amount by which an image pixel is blurred as a function of position. Several techniques have been devised to handle this variability in the context of the standard image deconvolution problem. We have developed an iterative gravitational lens modeling code called Mirage that determines the parameters of pixelated source intensity distributions for a given lens model. We are able to include the effects of spatially variant point-spread functions using the iterative procedures in this lensing code. In this paper, we discuss the methods to include spatially variant blurring effects and test the results of the algorithm in the context of gravitational lens modeling problems.
TDCOSMO XXX: Spatially resolved kinematics of the deflectors in time-delay lens systems B1608+656 and SDSSJ1206+4332 from JWST-NIRSpec observation
University of California, Los Angeles(加州大学洛杉矶分校);University of Chicago(芝加哥大学);Independent University, Bangladesh(孟加拉独立大学);University of Oxford(牛津大学);Technical University of Munich(慕尼黑工业大学);Max Planck Institute for Astrophysics(马克斯·普朗克天体物理学研究所)
TDCOSMO XXIV. First spatially resolved kinematics of the lens galaxy obtained using JWST-NIRSpec to improve time-delay cosmography
Kavli Institute for Cosmological Physics, University of Chicago(芝加哥大学卡弗里宇宙物理学研究所);Center for Astronomy, Space Science and Astrophysics, Independent University, Bangladesh(孟加拉独立大学天文学、空间科学与天体物理中心);Department of Physics and Astronomy, University of California, Los Angeles(加州大学洛杉矶分校物理与天文系);Technical University of Munich, TUM School of Natural Sciences, Physics Department(慕尼黑工业大学自然科学院物理系);Max Planck Institute for Astrophysics(马克斯·普朗克天体物理学研究所);Space Telescope Science Institute(太空望远镜科学研究所);Sub-Department of Astrophysics, Department of Physics, University of Oxford(牛津大学物理系天体物理子部门)
Point spread function modelling for astronomical telescopes: a review focused on weak gravitational lensing studies
CEA(法国原子能和替代能源委员会);CNRS(法国国家科学研究中心);AIM(天体物理与宇宙学研究所);University College London (UCL)(伦敦大学学院);Mullard Space Science Laboratory(穆拉德空间科学实验室);Institute of Astrophysics(天体物理研究所)
The stellar velocity anisotropy of strong lensing massive elliptical galaxies and its role in the inference of the Hubble parameter $H_0$ using spatially resolved kinematics
American Museum of Natural History(美国自然历史博物馆);The Graduate Center of the City University of New York(纽约市立大学研究生中心);Lehman College of the CUNY(纽约市立大学雷曼学院);Borough of Manhattan Community College, City University of New York(纽约市立大学曼哈顿社区学院)
Point spread function requirements for dark matter subhalo detection with the Habitable Worlds Observatory
University of Cambridge(剑桥大学);Jet Propulsion Laboratory California Institute of Technology(加州理工学院喷气推进实验室);Durham University(杜伦大学);University of Groningen(格罗宁根大学)