Accompanying 3d visualization to the article:

Second Data Release of the COSMOS Lyman-alpha Mapping and Tomography Observations:
The First 3D Maps of the Large-Scale Cosmic Web at 2.05 < z < 2.55

by B. Horowith, K.-G. Lee, M. Ata, T. Müller, A. Krolewski, J. X. Prochaska, J. F. Hennawi, M. White, D. Schlegel, R. M. Rich, P. E. Nugent, N. Suzuki, D. Kashino, A. M. Koekemoer, B. C. Lemaux

DOI: TBA

preprint: arxiv.org/2109.09660

This interactive shows the distribution of neutral hydrogen as traced by Lyman Alpha tomography via a Wiener Filtering technique. Over 350 background sources with absorption signatures were used to infer the three dimension distribution of the intergalactic medium at megaparsec scales. Note the large void structure at z~2.35 and massive supercluster-like structure at z~2.45.

Control

• LMB: Rotate the camera around the current point-of-interest
• MMB/wheel: Change the distance to the current point-of-interest
• RMB: Move the camera parallel to the viewing plane

In the config panel, you can change a couple of display parameters to highlight certain features and display coeval galaxy samples. The transfer function consists of 4 thin Gaussians whose position and opacity (alpha) can be adjusted individually.

Developer of 3d visualization

• Thomas Müller (HdA/MPIA)

Resources

• The graphical view makes use of WebGL / threejs.