Výsledky vyhledávání - "Harvey, David R"

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Weak gravitational lensing measurements of Abell 2744 using JWST and shear measurement algorithm pyRRG-JWST

Autor: Harvey, David R., Massey, Richard

We update the publicly available weak lensing shear measurement algorithm pyRRG for the James Webb Space Telescope, and apply it to UNCOVER DR1 imaging of galaxy cluster Abell 2744. At short wavelengths (< 2.5$\mu$m), shear measurements are consisten

Externí odkaz: http://arxiv.org/abs/2401.16478

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PyAutoLens: Open-Source Strong Gravitational Lensing

Autor: Nightingale, James. W., Hayes, Richard G., Kelly, Ashley, Amvrosiadis, Aristeidis, Etherington, Amy, He, Qiuhan, Li, Nan, Cao, XiaoYue, Frawley, Jonathan, Cole, Shaun, Enia, Andrea, Frenk, Carlos S., Harvey, David R., Li, Ran, Massey, Richard J., Negrello, Mattia, Robertson, Andrew

Publikováno v: Journal of Open Source Software, 6(58), 2525 (2021)

Strong gravitational lensing, which can make a background source galaxy appears multiple times due to its light rays being deflected by the mass of one or more foreground lens galaxies, provides astronomers with a powerful tool to study dark matter,

Externí odkaz: http://arxiv.org/abs/2106.01384

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Galaxy structure with strong gravitational lensing: decomposing the internal mass distribution of massive elliptical galaxies

Autor: Nightingale, James. W., Massey, Richard J., Harvey, David R., Cooper, Andrew P., Etherington, Amy, Tam, Sut-Ieng, Hayes, Richard G.

We investigate how strong gravitational lensing can test contemporary models of massive elliptical (ME) galaxy formation, by combining a traditional decomposition of their visible stellar distribution with a lensing analysis of their mass distributio

Externí odkaz: http://arxiv.org/abs/1901.07801

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