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This week heralds an exciting and challenging endeavor for astronomy. The Event Horizon Telescope will seek to capture a first-ever image of the supermassive black hole at the center of the Milky Way,...
A Study of Gravitational Lens Chromaticity with the Hubble Space Telescope
A Study of Gravitational Lens Chromaticity with the Hubble Space Telescope
2011/10/20
We report Hubble Space Telescope observations of 6 gravitational lenses with the Advanced Camera for Surveys. We measured the flux ratios between the lensed images in 6 filters from 8140\AA\ to 2200\A...