About the CLAMATO Project

CLAMATO LMAP survey’s goal is to map the z ∼ 2.3 cosmic web with Lyα forest tomography using Keck-I/LRIS to collect data. This technique expands upon the HI Lyα forest analysis of IGM absorption that is traditionally carried out along relatively rare quasar lines-of-sight by targeting ubiquitous star-forming Lyman-Break galaxies (LBGs) and faint quasars at z ∼ 2 − 3 as background sources. One can then tomographically interpolate across the adjacent lines-of-sight to yield 3D maps of the IGM HI absorption, which is a non-linear tracer of the cosmic web in dark matter.

Due to the long (∼ 400 h−1 Mpc) path length in the Lyα forest probed by each background source, this technique allows the mapping of large volumes at z > 2. This project will allow the first characterization of galaxy environments at the given redshifts as well as studying extended voids and protoclusters. 

Area covered in the survey: 

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The survey aims to make the first characterization of sheets and filaments of the high-redshift cosmic web. Additionally, it hopes to provide a measure of the local environmental density at the positions of individual galaxies with a  2.2 < z < 2.5 redshift.

7 comments

  1. This world exists, Jual Titan Gel Bandung it is only necessary that we pay attention to it before it disappears. The speed of things nowadays has taken away the ability to teach this to our children. It is up to us to reverse this picture, and I do not mean the world, but each one in his house, with his children, nephews and brothers.

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